Dual-frequency laser frequency difference adjustment system and method based on stress transfer

Abstract

This application provides a dual-frequency laser frequency difference adjustment system and method based on stress transfer. The system includes a dual-frequency laser and a detection component. The dual-frequency laser includes a housing, a magnetic strip, a first reflector, a second reflector, and a first deformation functional component. The first deformation functional component is connected between the first reflector and the housing and is configured to undergo at least plastic deformation when subjected to external force, and to transmit the stress generated by its deformation to the first reflector. The detection component includes a polarizer, a detector, and a processor. The detector receives the laser light emitted from the dual-frequency laser and passes through the polarizer, and converts the laser light into an electrical signal. The processor receives the electrical signal and generates frequency difference information of the two linearly polarized beams of the laser light. According to this application, damage to the dual-frequency laser can be reduced during frequency difference adjustment, and the frequency difference stability of the dual-frequency laser can be improved, as well as the ease of operation of frequency difference adjustment.

Description

Technical Field

[0001] This application relates to the field of laser technology, and in particular to a dual-frequency laser frequency difference adjustment system and method based on stress transfer. Background Technology

[0002] Dual-frequency lasers, with their outstanding advantages such as high precision, high resolution, and strong resistance to environmental interference, have been widely used in high-end equipment fields such as precision positioning of lithography machine workpiece stages and precision calibration of CNC machine tools in recent years.

[0003] In related technologies, the frequency difference of a dual-frequency laser can be controlled by applying stress to the cavity mirror structure. Existing stress adjustment methods mainly include elastic force application, drilling, and laser engraving. Elastic force application involves applying force to the mirror through an elastic force application mechanism fixed to the mirror. Because this method directly compresses the mirror, it causes significant damage, affecting the lifespan of the dual-frequency laser. Furthermore, the control process is complex, and the frequency difference stability is poor. Drilling generates stress by creating holes in the mirror. This method also causes significant damage to the mirror, affecting the lifespan of the dual-frequency laser, and the frequency difference stability is also poor. Laser engraving creates stress by carving different patterns inside the mirror. This method also damages the mirror and requires a laser engraving machine, making operation complex. Summary of the Invention

[0004] In view of the above problems, this application provides a dual-frequency laser frequency difference adjustment system and method based on stress transfer, which can not only reduce damage to the dual-frequency laser during the frequency difference adjustment process and improve the service life of the dual-frequency laser, but also improve the frequency difference stability during the use of the dual-frequency laser and the ease of operation of frequency difference adjustment.

[0005] In a first aspect, embodiments of this application provide a dual-frequency laser frequency difference adjustment system based on stress transmission. The dual-frequency laser frequency difference adjustment system based on stress transmission includes a dual-frequency laser and a detection component. The dual-frequency laser includes a tube shell, a magnetic strip, a first reflector, a second reflector, and a first deformation functional component. The tube shell has a cavity inside, which penetrates the tube shell along a first direction. The magnetic strip is disposed outside the tube shell and is used to apply a magnetic field to the cavity. The direction of the magnetic field is perpendicular to the first direction. The first reflector and the second reflector are respectively disposed on opposite sides of the tube shell along the first direction, and both the first reflector and the second reflector are fixed relative to the tube shell. One of the first reflector and the second reflector is configured to emit laser light, which includes two linearly polarized beams. The first deformation functional component is connected between the first reflector and the tube shell. The first deformation functional component is configured to generate at least plastic deformation when subjected to external force and transmit the stress generated by its own deformation to the first reflector.

[0006] The detection component includes a polarizer, a detector, and a processor. The dual-frequency laser, polarizer, and detector are spaced apart along a first direction, with the polarizer located between the first reflector and the detector. The processor is connected to the detector. The detector is used to receive the laser emitted from the dual-frequency laser and passing through the polarizer, and convert the laser into an electrical signal. The processor is used to receive the electrical signal and generate frequency difference information of the two linearly polarized beams of the laser.

[0007] In some embodiments of the first aspect, the stress-transfer-based dual-frequency laser frequency difference adjustment system further includes a control component and a force-applying component. The force-applying component is configured to be movably disposed relative to a first deformable functional element. The control component is connected to the force-applying component and a processor. The processor is also configured to send frequency difference information to the control component, the control component is configured to generate control commands based on the frequency difference information, and the force-applying component is configured to apply a force to the first deformable functional element in response to the control commands.

[0008] In some embodiments of the first aspect, the force-applying components include a first force-applying member and a second force-applying member. The first force-applying member is configured to be movably disposed relative to a first deformable functional member, and the second force-applying member is configured to be movably disposed relative to the first deformable functional member. The first force-applying member is used to apply a force along a second direction to the first deformable functional member in response to a control command, and the second force-applying member is used to apply a force along a third direction to the first deformable functional member in response to a control command. The first direction, the second direction, and the third direction intersect each other.

[0009] In some embodiments of the first aspect, the first deformable functional component includes a first connecting portion and a second connecting portion, the first connecting portion being connected to the shell, and the second connecting portion being connected between the first connecting portion and the first reflector. The stiffness of the first connecting portion is greater than that of the second connecting portion, and the second connecting portion is configured to undergo at least plastic deformation when subjected to an external force, and to transmit the stress generated by its own deformation to the first reflector.

[0010] In some embodiments of the first aspect, the second connecting portion includes a connected main body segment and a thinning segment, the main body segment and the thinning segment being disposed along a first direction, the main body segment having a first thickness d1 along a direction perpendicular to the first direction, and the thinning segment having a second thickness d2 along a direction perpendicular to the first direction, where d1 > d2.

[0011] In some embodiments of the first aspect, there are multiple thinning segments, including a first thinning segment and a second thinning segment, which are spaced apart along a first direction. The first thinning segment has a third thickness d3 along a direction perpendicular to the first direction, and the second thinning segment has a fourth thickness d4 along a direction perpendicular to the first direction, where d3 > d4.

[0012] In some embodiments of the first aspect, the first reflector is configured to emit laser light. The stress-transfer-based dual-frequency laser frequency difference adjustment system further includes a second deformation functional element connected between the second reflector and the housing, the second deformation functional element being configured to undergo at least plastic deformation when subjected to an external force and to transmit the stress generated by its own deformation to the second reflector.

[0013] In some embodiments of the first aspect, a power supply is also included, which is used to apply an electric field to the dual-frequency laser to cause the gas in the cavity to produce a glow discharge, the first deformable functional element is connected to the positive terminal of the power supply, and the second deformable functional element is connected to the negative terminal of the power supply.

[0014] Secondly, embodiments of this application provide a method for adjusting the frequency difference of a dual-frequency laser based on stress transfer. This method is applied to any of the dual-frequency laser frequency difference adjustment systems based on stress transfer in the first aspect, and the method includes: A dual-frequency laser is provided and fixedly mounted. The dual-frequency laser includes a housing, a magnetic strip, a first reflector, a second reflector, and a first deformation functional component. The housing has a cavity inside, which penetrates the housing along a first direction. The magnetic strip is disposed outside the housing and is used to apply a magnetic field to the cavity. The direction of the magnetic field is perpendicular to the first direction. The first reflector and the second reflector are respectively disposed on opposite sides of the housing along the first direction, and both the first reflector and the second reflector are fixedly mounted relative to the housing. One of the first reflector and the second reflector is configured to emit laser light. The first deformation functional component is connected between the first reflector and the housing. A detection component is provided, wherein a dual-frequency laser, a polarizer of the detection component, and a detector are spaced apart along a first direction, and the polarizer is placed between a first reflector and the detector, and the processor of the detection component is connected to the detector; The laser emitted by the dual-frequency laser is controlled to consist of two linearly polarized beams, the frequency difference of which changes according to the stress of the first reflecting mirror. The detector receives the laser light passing through the polarizer and converts it into an electrical signal. The processor receives the electrical signal and generates the frequency difference information of the two linearly polarized beams of the laser light. Based on frequency difference information, the magnitude of the external force applied to the first deformable functional component is dynamically adjusted so that the stress generated during the plastic deformation of the first deformable functional component is transmitted to the first reflector until the frequency difference information meets the preset target value.

[0015] In some embodiments of the second aspect, the step of dynamically adjusting the magnitude of the external force applied to the first deformable functional component based on frequency difference information, so that the stress generated during the plastic deformation of the first deformable functional component is transmitted to the first reflector, until the frequency difference information meets the preset target value, includes: A control component and a force-applying component are provided, the force-applying component is configured to be movable relative to the first deformable functional component, and the control component is connected to the force-applying component and the processor; The control component controls the force-applying component to apply external force to the first deformation functional component, and generates control commands based on frequency difference information to dynamically adjust the magnitude of the external force applied by the force-applying component to the first deformation functional component.

[0016] The stress-transfer-based dual-frequency laser frequency difference adjustment system and method provided in this application, on the one hand, eliminates the need to directly apply external force to the first reflector. Instead, it applies a controllable force to the first deformable component, causing it to deform. The first deformable component then smoothly transfers the stress generated by its deformation to the first reflector, thereby achieving frequency difference adjustment. This effectively reduces physical damage to the first reflector throughout the process, fundamentally improving the negative impact on the lifespan of the dual-frequency laser. On the other hand, the first deformable component can at least undergo plastic deformation, which enables the first reflector to form a stable and durable stress distribution, effectively ensuring the long-term stability of the dual-frequency light output. Furthermore, this method only requires simple, conventional tools to apply force to the first deformable component, making it convenient to operate. Thus, the above technical solution not only reduces damage to the dual-frequency laser during frequency difference adjustment and improves its lifespan, but also enhances the frequency difference stability and ease of operation during the use of the dual-frequency laser.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of the layout structure of a dual-frequency laser frequency difference adjustment system based on stress transfer, provided for some embodiments of this application; Figure 2 A dual-frequency laser frequency difference adjustment system based on stress transfer, provided in some embodiments of this application, is... Figure 1 A schematic diagram of a partial cross-sectional structure at point H; Figure 3 A schematic diagram of the layout structure of another dual-frequency laser frequency difference adjustment system based on stress transfer provided in some embodiments of this application; Figure 4 This is a schematic diagram of the layout structure of another dual-frequency laser frequency difference adjustment system based on stress transfer, provided in some embodiments of this application. Figure 5 This is a flowchart illustrating a dual-frequency laser frequency difference adjustment method based on stress transfer, provided for some embodiments of this application.

[0019] The reference numerals in the detailed embodiments are as follows: 10. Dual-frequency laser; 11. Tube shell; 111. Cavity; 12. First reflecting mirror; 13. Second reflecting mirror; 14. First deformation functional component; 15. Second deformation functional component; 16. Magnetic strip; 141. First connecting part; 142. Second connecting part; 1421. Main body segment; 1421a. First main body segment; 1421b. Second main body segment; 1421c. Third main body segment; 1422. Thinning segment; 1422a. First thinning segment; 1422b. Second thinning segment; 20. Power supply; 30. Detection component; 31. Polarizer; 32. Detector; 33. Processor; 40. Control components; 50. Force-applying component; 51. First force-applying component; 52. Second force-applying component; X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, rather than to describe a specific order or hierarchy.

[0022] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0025] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0026] In this application, "multiple" means two or more (including two).

[0027] In this application, the term "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering.

[0028] The stress-transfer-based dual-frequency laser frequency difference adjustment system provided in the embodiments of this application is described below with reference to the accompanying drawings. Figure 1 This is a schematic diagram of the layout structure of a dual-frequency laser frequency difference adjustment system based on stress transfer, provided in some embodiments of this application. Figure 2 A dual-frequency laser frequency difference adjustment system based on stress transfer, provided in some embodiments of this application, is... Figure 1 A schematic diagram of a partial cross-sectional structure at point H.

[0029] refer to Figures 1 to 2This application provides a dual-frequency laser frequency difference adjustment system based on stress transfer. The dual-frequency laser frequency difference adjustment system based on stress transfer includes a dual-frequency laser 10 and a detection component 30. The dual-frequency laser 10 includes a shell 11, a magnetic strip 16, a first reflector 12, a second reflector 13, and a first deformation functional component 14. The shell 11 has a cavity 111 inside, and the cavity 111 penetrates the shell 11 along a first direction X. The magnetic strip 16 is disposed outside the shell 11 and is used to apply a magnetic field to the cavity 111. The direction of the magnetic field is perpendicular to the first direction X. The first reflector 12 and the second reflector 13 are respectively disposed on opposite sides of the tube shell 11 along the first direction X, and both the first reflector 12 and the second reflector 13 are fixedly disposed relative to the tube shell 11. One of the first reflector 12 and the second reflector 13 is configured to emit a laser, which includes two linearly polarized beams. The first deformation functional component 14 is connected between the first reflector 12 and the tube shell 11. The first deformation functional component 14 is configured to generate at least plastic deformation when subjected to external force and transmit the stress generated by its own deformation to the first reflector 12.

[0030] The detection component 30 includes a polarizer 31, a detector 32, and a processor 33. The dual-frequency laser 10, the polarizer 31, and the detector 32 are spaced apart along the first direction X, and the polarizer 31 is located between the first reflector 12 and the detector 32. The processor 33 is connected to the detector 32. The detector 32 is used to receive the laser emitted from the dual-frequency laser 10 and passing through the polarizer 31, and convert the laser into an electrical signal. The processor 33 is used to receive the electrical signal and generate frequency difference information of the two linearly polarized beams of the laser.

[0031] For example, the first reflector 12, the first deformable functional component 14 and the housing 11 can be sealed together by a sealing process.

[0032] The housing 11 provides a high-vacuum sealed cavity 111 environment, which contains the working gas and provides space for the resonant optical path. Exemplarily, the housing 11 may be made of, but is not limited to, glass, ceramic, or metal. The cavity 111 may be, but is not limited to, a cylindrical, stepped, or partially contracted structure.

[0033] The first reflecting mirror 12 and the second reflecting mirror 13 are used to form a resonant cavity. The fact that one of the first reflecting mirror 12 and the second reflecting mirror 13 is configured to emit laser light means that one of the first reflecting mirror 12 and the second reflecting mirror 13 is a total reflection mirror, and the other is an output mirror used to emit laser light. For example, an anti-reflection coating is provided on the surface of the output mirror near the housing 11, and a partial reflection coating is provided on the surface of the output mirror away from the housing 11. The first reflecting mirror 12 and the second reflecting mirror 13 can also be referred to as the cavity mirror structure of a dual-frequency laser; that is, the first reflecting mirror 12 can also be called the first cavity mirror, and the second reflecting mirror 13 can also be called the second cavity mirror.

[0034] The first reflector 12 being fixed relative to the casing 11 means that during the process of the first deformation functional component 14 deforming and transmitting the stress generated by its own deformation to the first reflector 12, the first reflector 12 remains macroscopically fixed relative to the casing 11. For example, the first reflector 12 may be fixedly connected to the casing 11 by a fastener. The second reflector 13 being fixed relative to the casing 11 is similarly fixed.

[0035] The first deformable component 14 being able to undergo at least plastic deformation when subjected to external force means that it can simultaneously undergo elastic and plastic deformation. After the external force is removed, the elastic deformation disappears, while the plastic deformation is retained. The plastic deformation enables the first reflecting mirror 12 to form a stable and durable stress distribution. Of course, theoretically, the first deformable component 14 may also undergo only plastic deformation when subjected to external force.

[0036] When a suitable magnetic field is applied to the dual-frequency laser 10, due to the transverse Zeeman effect and "mode pulling," each laser longitudinal mode will split into two orthogonally linearly polarized beams. The frequency difference between the two linearly polarized beams is related to the residual stress on the mirror. Therefore, by adjusting the stress of the mirror, the frequency difference between the two linearly polarized beams output by the dual-frequency laser 10 can be adjusted. The frequency difference between the two linearly polarized beams can also be called the frequency difference of the dual-frequency laser.

[0037] For example, the magnetic stripe 16 reduces the risk of mode competition when the frequency difference is small (e.g., less than 40 MHz) by applying a magnetic field to the cavity 111 to split the gain spectral lines of the atoms into two classes (if mode competition occurs, dual-frequency light cannot be emitted).

[0038] The frequency difference between the two linearly polarized beams changes according to the stress on the first reflecting mirror 12. For example, the magnitude of the stress on the first reflecting mirror 12 affects the magnitude of the frequency difference between the two linearly polarized beams; the greater the stress on the first reflecting mirror 12, the higher the frequency of the two linearly polarized beams; the smaller the stress on the first reflecting mirror 12, the smaller the frequency difference between the two linearly polarized beams. Therefore, the frequency difference can be set and adjusted by applying different degrees of external force to the first deformable functional component 14.

[0039] For example, during the frequency difference adjustment process, after applying a certain external force to the first deformation functional component 14, the external force is removed, and the frequency difference between the two linearly polarized beams is detected by the detection component 30 to confirm whether the frequency difference has reached a preset target value. If the preset target value has not been reached, a certain external force is applied to the first deformation functional component 14 again, and then the external force is removed. The frequency difference between the two linearly polarized beams is then detected by the detection component 30 again to confirm whether the frequency difference has reached the preset target value. This process is repeated until the frequency difference reaches the preset target value. The frequency difference between the two linearly polarized beams detected by the detection component 30 essentially corresponds to the effect of the stress caused by the plastic deformation of the first deformation functional component 14 at the first reflecting mirror 12.

[0040] For example, the force applied to the first deformable functional component 14 can be applied manually using conventional tools such as tweezers or pliers.

[0041] The first deformation functional component 14 can be directly connected to the tube shell 11, or it can be indirectly connected to the tube shell 11 through other components. The first deformation functional component 14 can be directly connected to the first reflector 12, or it can be indirectly connected to the first reflector 12 through other components.

[0042] Optionally, the first deformable functional component 14 may be, but is not limited to, a cylindrical structure, a sheet structure, a beam structure, or a ring structure.

[0043] As an example, the first deformable functional component 14 may be, but is not limited to, made of Kovar material (iron-nickel-cobalt alloy material).

[0044] On the one hand, this method does not require applying external force directly to the first reflector 12. Instead, it applies a controllable force to the first deformation functional component 14 to drive the first deformation functional component 14 to deform. The first deformation functional component 14 then smoothly transmits the stress generated by its own deformation to the first reflector 12, thereby achieving frequency difference adjustment. This effectively reduces physical damage to the first reflector 12 throughout the process and fundamentally improves the negative impact on the service life of the dual-frequency laser 10.

[0045] On the other hand, the first deformable component 14 can at least produce plastic deformation, which enables the first reflector 12 to form a stable and durable stress distribution, effectively ensuring the long-term stability of dual-frequency light output. Furthermore, this method only requires simple, conventional tools to apply force to the first deformable component 14, making it easy to operate.

[0046] Thus, the above technical solution can not only reduce the damage to the dual-frequency laser 10 during the frequency difference adjustment process and improve the service life of the dual-frequency laser 10, but also improve the frequency difference stability of the dual-frequency laser 10 during use and the ease of operation of frequency difference adjustment.

[0047] In some embodiments, the stress-transfer-based dual-frequency laser frequency difference adjustment system further includes a power supply 20, which is electrically connected to the dual-frequency laser 10. The power supply 20 is used to apply an electric field to the dual-frequency laser 10 so that the gas in the cavity 111 generates glow discharge.

[0048] The dual-frequency laser 10 has an anode and a cathode. The positive terminal of the power supply 20 is connected to the cathode of the dual-frequency laser 10, and the negative terminal of the power supply 20 is connected to the anode of the dual-frequency laser 10, so as to establish an electric field in the cavity 111, causing the gas in the cavity 111 to generate glow discharge and form stimulated emission.

[0049] Figure 3 This is a schematic diagram of the layout structure of another dual-frequency laser frequency difference adjustment system based on stress transfer, provided in some embodiments of this application.

[0050] Continue to refer to Figure 3 In some embodiments, the stress-transfer-based dual-frequency laser frequency difference adjustment system further includes a control component 40 and a force-applying component 50. The force-applying component 50 is configured to be movably disposed relative to the first deformable functional member 14. The control component 40 connects the force-applying component 50 and the processor 33. The processor 33 is also used to send frequency difference information to the control component 40. The control component 40 is used to generate control commands based on the frequency difference information. The force-applying component 50 is used to apply a force to the first deformable functional member 14 in response to the control commands.

[0051] By setting up a control unit 40 and a force application unit 50, and having the processor 33 send the detected frequency difference information to the control unit 40, which then generates control commands to drive the force application unit 50 to apply force to the first deformation functional component 14, the frequency difference adjustment process can be automated. This scheme can automatically adjust the magnitude of the force applied to the first deformation functional component 14 based on real-time frequency difference feedback, thereby reducing reliance on manual labor, improving the accuracy of frequency difference adjustment, and increasing adjustment efficiency.

[0052] For example, the force-applying component 50 may be, but is not limited to, a gripper structure, a pressure block structure, an eccentric wheel structure, or a lead screw structure. The control component 40 may be, but is not limited to, a programmable logic controller or a host computer control system.

[0053] Figure 4 This is a schematic diagram of the layout structure of another dual-frequency laser frequency difference adjustment system based on stress transfer, provided in some embodiments of this application.

[0054] Continue to refer to Figure 4In some embodiments, the force-applying component 50 includes a first force-applying element 51 and a second force-applying element 52. The first force-applying element 51 is configured to be movably disposed relative to the first deformable functional element 14, and the second force-applying element 52 is configured to be movably disposed relative to the first deformable functional element 14. The first force-applying element 51 is used to apply a force along a second direction Y to the first deformable functional element 14 in response to a control command, and the second force-applying element 52 is used to apply a force along a third direction Z to the first deformable functional element 14 in response to a control command. The first direction X, the second direction Y, and the third direction Z intersect each other.

[0055] By setting the first force-applying component 51 and the second force-applying component 52, external forces can be applied to the first deformation functional component 14 along the second direction Y and the third direction Z, respectively, thereby enabling more precise control over the deformation and stress transmission direction of the first deformation functional component 14, which is beneficial to further improve the accuracy of frequency difference adjustment.

[0056] The structures of the first force-applying member 51 and the second force-applying member 52 can be the same or different. As an example, both the first force-applying member 51 and the second force-applying member 52 can be gripper structures.

[0057] In some embodiments, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0058] In some embodiments, the second direction Y is parallel to the direction of the magnetic field.

[0059] In some embodiments, the third direction Z is perpendicular to the direction of the magnetic field.

[0060] In some embodiments, the first deformable functional component 14 includes a first connecting portion 141 and a second connecting portion 142. The first connecting portion 141 is connected to the housing 11, and the second connecting portion 142 is connected between the first connecting portion 141 and the first reflector 12. The stiffness of the first connecting portion 141 is greater than that of the second connecting portion 142. The second connecting portion 142 is configured to undergo at least plastic deformation when subjected to external force and to transmit the stress generated by its own deformation to the first reflector 12.

[0061] The first connecting part 141 has relatively high rigidity and is firmly connected to the shell 11, which can significantly improve the connection stability between the first deformable functional component 14 and the shell 11, reduce the risk of the first deformable functional component 14 becoming loose, shifting or changing its posture, and help improve the consistency of stress loading direction and magnitude.

[0062] The second connecting part 142 has relatively low stiffness, which can improve the deformation capacity of the second connecting part 142. When subjected to external force, it can better deform to transmit stress to the first reflector 12, thereby improving the frequency difference adjustment accuracy.

[0063] The first connecting part 141 and the second connecting part 142 may be made of the same material or different materials.

[0064] For example, the first connecting part 141 and the second connecting part 142 can be designed differently in terms of material, structural shape or structural size, so that the stiffness of the first connecting part 141 is greater than that of the second connecting part 142.

[0065] In some examples, the first connecting portion 141 and the second connecting portion 142 are made of different materials. For example, when the first connecting portion 141 and the second connecting portion 142 have the same structural shape and structural dimensions, the stiffness of the material of the first connecting portion 141 is less than that of the material of the second connecting portion 142, so that the stiffness of the first connecting portion 141 is greater than that of the second connecting portion 142.

[0066] In other examples, the structural dimensions of the first connecting portion 141 and the second connecting portion 142 are different. For instance, when the first connecting portion 141 and the second connecting portion 142 have the same structural shape and material, the thickness of the first connecting portion 141 is greater than the thickness of the second connecting portion 142. In other words, the amount of material used in the first connecting portion 141 is greater than the amount of material used in the second connecting portion 142, so that the stiffness of the first connecting portion 141 is greater than the stiffness of the second connecting portion 142.

[0067] In some other examples, the first connecting portion 141 and the second connecting portion 142 have different structural forms. For example, when the first connecting portion 141 and the second connecting portion 142 have the same structural dimensions and materials, a reinforcing member is added to the first connecting portion 141 so that the stiffness of the first connecting portion 141 is greater than that of the second connecting portion 142.

[0068] In some embodiments, the second connecting portion 142 includes a connected main body segment 1421 and a thinning segment 1422, the main body segment 1421 and the thinning segment 1422 are disposed along a first direction X, the main body segment 1421 has a first thickness d1 along a direction perpendicular to the first direction X, and the thinning segment 1422 has a second thickness d2 along a direction perpendicular to the first direction X, where d1 > d2.

[0069] The first thickness d1 of the main body segment 1421 can be understood as the amount of material used in the main body segment 1421 along the direction perpendicular to the first direction X, and the second thickness d2 of the thinning segment 1422 can be understood as the amount of material used in the thinning segment 1422 along the direction perpendicular to the first direction X.

[0070] The relatively large first thickness d1 of the main body segment 1421 significantly improves its structural strength and reliability, reducing the risk of structural damage to the second connecting portion 142 during stress application. Conversely, the relatively small second thickness d2 of the thinned segment 1422 enhances its deformability, allowing for better deformation under external force to transmit stress to the first reflector 12. This also enables finer control of stress increments during adjustment, thereby improving frequency offset adjustment accuracy. Thus, this embodiment balances the structural reliability of the second connecting portion 142 with its frequency offset adjustment accuracy.

[0071] For example, during the application of force to the second connecting portion 142, a relatively large external force may be applied to the main body section 1421 first, so that the first reflecting mirror 12 is subjected to greater stress, thereby causing the two linearly polarized beams to generate a larger frequency difference increment; when the detection component detects that the frequency difference between the two linearly polarized beams has a small gap with the preset target value, a relatively small external force is then applied to the thinning section 1422, thereby reducing the risk that the frequency difference between the two linearly polarized beams exceeds the preset target value.

[0072] Of course, force can also be applied to only one of the main body section 1421 and the thinning section 1422, depending on the actual application.

[0073] In some embodiments, the first deformable functional component 14 has a channel inside, the channel passes through the first deformable functional component 14 along the first direction X, and the channel is connected to the cavity 111.

[0074] In this embodiment, the first thickness d1 of the main body segment 1421 in a direction perpendicular to the first direction X refers to the distance between the outer surface and the inner surface of the main body segment 1421 in a direction perpendicular to the first direction X. The second thickness d2 of the thinned segment 1422 in a direction perpendicular to the first direction X refers to the distance between the outer surface and the inner surface of the thinned segment 1422 in a direction perpendicular to the first direction X.

[0075] The outer surface of the main body segment 1421 refers to the surface of the main body segment 1421 facing away from the channel, and the inner surface of the main body segment 1421 refers to the surface of the main body segment 1421 facing the channel. The outer surface of the thinning segment 1422 refers to the surface of the thinning segment 1422 facing away from the channel, and the inner surface of the thinning segment 1422 refers to the surface of the thinning segment 1422 facing the channel.

[0076] In some embodiments, the first thickness d1 and the second thickness d2 satisfy the relationship: 1.5≤d1 / d2≤2.5, which can avoid excessive dimensional differences between the main body segment 1421 and the thinned segment 1422 and help improve the structural consistency of the second connection portion 142.

[0077] As an example, d1 / d2 can be 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5 or any value between any two of the above.

[0078] In some embodiments, the number of thinning segments 1422 is plurality of, including a first thinning segment 1422a and a second thinning segment 1422b, which are spaced apart along a first direction X. The first thinning segment 1422a has a third thickness d3 along a direction perpendicular to the first direction X, and the second thinning segment 1422b has a fourth thickness d4 along a direction perpendicular to the first direction X, where d3 > d4.

[0079] The third thickness d3 of the first thinning section 1422a can be understood as the amount of material used in the first thinning section 1422a along the direction perpendicular to the first direction X, and the fourth thickness d4 of the second thinning section 1422b can be understood as the amount of material used in the second thinning section 1422b along the direction perpendicular to the first direction X.

[0080] The above technical solution, by setting multiple thinning sections 1422 and designing their thicknesses differently, enables the deformation and stress output of the second connection 142 to exhibit gradient-level characteristics, facilitating gradient-level adjustment and allowing for finer control of stress increments, thereby further improving the accuracy of frequency difference adjustment. Furthermore, the dispersed arrangement of multiple thinning sections 1422 helps distribute deformation from a single area to multiple areas, reducing the risk of localized stress concentration and fatigue damage, and improving the structural reliability and lifespan of the second connection 142 during repeated adjustments.

[0081] For example, during the application of force to the second connecting portion 142, a relatively large external force may be applied to the first thinning section 1422a first, so that the first reflecting mirror 12 is subjected to greater stress, thereby causing a larger frequency difference increment between the two linearly polarized beams; when the detection component detects that the frequency difference between the two linearly polarized beams has a small gap with the preset target value, a relatively small external force may be applied to the second thinning section 1422b, thereby reducing the risk that the frequency difference between the two linearly polarized beams exceeds the preset target value.

[0082] Of course, force can also be applied to only one of the first thinning section 1422a and the second thinning section 1422b, depending on the actual application.

[0083] In some embodiments, the first deformable functional component 14 has a channel inside, the channel passes through the first deformable functional component 14 along the first direction X, and the channel is connected to the cavity 111.

[0084] In this embodiment, the third thickness d3 of the first thinning segment 1422a in a direction perpendicular to the first direction X refers to the distance between the outer surface and the inner surface of the first thinning segment 1422a in a direction perpendicular to the first direction X. The fourth thickness d4 of the second thinning segment 1422b in a direction perpendicular to the first direction X refers to the distance between the outer surface and the inner surface of the second thinning segment 1422b in a direction perpendicular to the first direction X.

[0085] The outer surface of the first thinning section 1422a refers to the surface of the first thinning section 1422a facing away from the channel, and the inner surface of the first thinning section 1422a refers to the surface of the first thinning section 1422a facing the channel. The outer surface of the second thinning section 1422b refers to the surface of the second thinning section 1422b facing away from the channel, and the inner surface of the second thinning section 1422b refers to the surface of the second thinning section 1422b facing the channel.

[0086] In some embodiments, there are multiple main body segments 1421, including a first main body segment 1421a, a second main body segment 1421b, and a third main body segment 1421c. The first main body segment 1421a is connected between the first reflector 12 and the first thinning segment 1422a, the second main body segment 1421b is connected between the first thinning segment 1422a and the second thinning segment 1422b, and the third main body segment 1421c is connected between the second thinning segment 1422b and the first connecting portion 141.

[0087] In some embodiments, the first reflector 12 is configured to emit laser light, and the stress-transfer-based dual-frequency laser frequency difference adjustment system further includes a second deformation functional element 15, which is connected between the second reflector 13 and the housing 11. The second deformation functional element 15 is configured to generate at least plastic deformation when subjected to external force and transmit the stress generated by its own deformation to the second reflector 13.

[0088] By further introducing a second deformation functional component 15, the second deformation functional component 15 can transmit the stress generated by its own deformation to the second reflector 13, so as to work together with the first reflector 12 to achieve frequency difference adjustment, thereby further improving the flexibility of frequency difference adjustment.

[0089] The force applied to the second deformable functional component 15 can be applied manually using conventional tools such as tweezers or pliers, or it can be applied by setting up an independent control component 40 and a force application component 50 to apply force to the second deformable functional component 15. For details, please refer to the above description of the first deformable functional component 14, which will not be repeated here.

[0090] For example, the second reflector 13, the second deformable functional component 15 and the housing 11 can be sealed together by a sealing process.

[0091] The detailed structure of the second deformation functional component 15 can be the same as that of the first deformation functional component 14. Please refer to the above description of the first deformation functional component 14, which will not be repeated here.

[0092] In some embodiments, the first deformation functional component 14 is connected to the positive terminal of the power supply 20, and the second deformation functional component 15 is connected to the negative terminal of the power supply 20.

[0093] In some embodiments, the second deformable functional element 15 serves as the anode of the dual-frequency laser 10.

[0094] In some embodiments, the dual-frequency laser 10 further includes a cylindrical body disposed within a cavity 111. The cylindrical body is connected to a first deformation functional component 14, which is connected to the positive terminal of a power supply 20. The cylindrical body serves as the cathode of the dual-frequency laser 10.

[0095] In some embodiments, the stress-transfer-based dual-frequency laser frequency difference adjustment system further includes a laser gain component disposed within the cavity 111. The laser gain component includes a capillary and a collector, the collector being disposed between the second reflector 13 and the capillary. The collector has a cavity inside, which extends through the collector along a first direction X, connecting the capillary and the cavity 111. The cross-sectional area of ​​the cavity perpendicular to the first direction X is larger than the cross-sectional area of ​​the capillary perpendicular to the first direction X.

[0096] The capillary tube can achieve laser gain effect, and the cavity can provide a larger collection space, making it easier to receive the beam reflected back from the second reflector 13, making it easier for the returned beam to couple into the capillary tube and obtain gain amplification.

[0097] The collecting component can be directly connected to the capillary or indirectly connected to the capillary through other components.

[0098] In some embodiments, the capillary and the collector are integrally molded, which simplifies the manufacturing process and reduces costs.

[0099] In some embodiments, in the direction from the second reflector 13 to the first reflector 12, the cross-sectional area of ​​the cavity perpendicular to the first direction X gradually decreases.

[0100] For example, in the direction from the second reflector 13 to the first reflector 12, the cavity has a gradually contracting conical structure.

[0101] On the one hand, the cavity provides a larger entrance on the side near the second reflector 13, making it easier to receive the beam reflected from the second reflector 13. On the other hand, the cavity forms a tapered structure that gradually tapers along the direction from the second reflector 13 to the first reflector 12, which can gradually guide the beam to a scale that better matches the capillary, reducing scattering or coupling losses caused by abrupt changes in cross-section, thereby improving the efficiency of beam gain amplification in the capillary. In addition, it also allows for a corresponding reduction in the overall size of the collector, thereby reducing the space occupied by the cavity 111, improving structural compactness, and reducing costs.

[0102] Figure 5 This is a flowchart illustrating a dual-frequency laser frequency difference adjustment method based on stress transfer, provided for some embodiments of this application.

[0103] Continue to refer to Figure 5 According to some embodiments of this application, this application also provides a method for adjusting the frequency difference of a dual-frequency laser based on stress transfer. This method is applied to the dual-frequency laser frequency difference adjustment system based on stress transfer provided by any of the above solutions. The method includes: Step 01: Provide a dual-frequency laser 10 and fix the dual-frequency laser 10 in place. The dual-frequency laser 10 includes a housing 11, a magnetic strip 16, a first reflector 12, a second reflector 13, and a first deformation functional component 14. The housing 11 has a cavity 111 inside, which penetrates the housing 11 along a first direction X. The magnetic strip 16 is disposed outside the housing 11 and is used to apply a magnetic field to the cavity 111. The direction of the magnetic field is perpendicular to the first direction X. The first reflector 12 and the second reflector 13 are respectively disposed on opposite sides of the housing 11 along the first direction X, and both the first reflector 12 and the second reflector 13 are fixed relative to the housing 11. One of the first reflector 12 and the second reflector 13 is configured to emit laser light. The first deformation functional component 14 is connected between the first reflector 12 and the housing 11. Step 02: Provide a detection component 30, and arrange the dual-frequency laser 10, the polarizer 31 of the detection component 30 and the detector 32 at intervals along the first direction X, and place the polarizer 31 between the first reflector 12 and the detector 32, and connect the processor 33 of the detection component 30 to the detector 32. Step 03: Control the dual-frequency laser 10 to emit laser light, wherein the laser light includes two linearly polarized beams, and the frequency difference between the two linearly polarized beams changes according to the stress change of the first reflecting mirror 12. Step 04: The detector 32 receives the laser light passing through the polarizer 31 and converts the laser light into an electrical signal. The processor 33 receives the electrical signal and generates the frequency difference information of the two linearly polarized beams of the laser light. Step 05: Based on the frequency difference information, dynamically adjust the magnitude of the external force applied to the first deformation functional component 14 so that the stress generated during the plastic deformation of the first deformation functional component 14 is transmitted to the first reflector 12 until the frequency difference information meets the preset target value.

[0104] For example, during the frequency difference adjustment process, after applying a certain external force to the first deformation functional component 14, the external force is removed, and the frequency difference between the two linearly polarized beams is detected by the detection component 30 to confirm whether the frequency difference has reached a preset target value. If the preset target value has not been reached, a certain external force is applied to the first deformation functional component 14 again, and then the external force is removed. The frequency difference between the two linearly polarized beams is then detected by the detection component 30 again to confirm whether the frequency difference has reached the preset target value. This process is repeated until the frequency difference reaches the preset target value. The frequency difference between the two linearly polarized beams detected by the detection component 30 essentially corresponds to the effect of the stress caused by the plastic deformation of the first deformation functional component 14 at the first reflecting mirror 12.

[0105] On the one hand, this method does not require applying external force directly to the first reflector 12. Instead, it applies a controllable force to the first deformation functional component 14 to drive the first deformation functional component 14 to deform. The first deformation functional component 14 then smoothly transmits the stress generated by its own deformation to the first reflector 12, thereby achieving frequency difference adjustment. This effectively reduces physical damage to the first reflector 12 throughout the process and fundamentally improves the negative impact on the service life of the dual-frequency laser 10.

[0106] On the other hand, the first deformable component 14 can at least produce plastic deformation, which enables the first reflector 12 to form a stable and durable stress distribution, effectively ensuring the long-term stability of dual-frequency light output. Furthermore, this method only requires simple, conventional tools to apply force to the first deformable component 14, making it easy to operate.

[0107] Thus, the above technical solution can not only reduce the damage to the dual-frequency laser 10 during the frequency difference adjustment process and improve the service life of the dual-frequency laser 10, but also improve the frequency difference stability of the dual-frequency laser 10 during use and the ease of operation of frequency difference adjustment.

[0108] In some embodiments, step 05 includes: A control unit 40 and a force application unit 50 are provided, the force application unit 50 is configured to be movable relative to the first deformable functional member 14, and the control unit 40 is connected to the force application unit 50 and the processor 33; The control component 40 controls the force-applying component 50 to apply an external force to the first deformation functional component 14, and generates control commands based on frequency difference information to dynamically adjust the magnitude of the external force applied by the force-applying component 50 to the first deformation functional component 14.

[0109] By setting up a control unit 40 and a force application unit 50, and having the processor 33 send the detected frequency difference information to the control unit 40, which then generates control commands to drive the force application unit 50 to apply force to the first deformation functional component 14, the frequency difference adjustment process can be automated. This scheme can automatically adjust the magnitude of the force applied to the first deformation functional component 14 based on real-time frequency difference feedback, thereby reducing reliance on manual labor, improving the accuracy of frequency difference adjustment, and increasing adjustment efficiency.

[0110] In some embodiments, step 05 includes: A control unit 40, a first force-applying member 51, and a second force-applying member 52 are provided. The first force-applying member 51 and the second force-applying member 52 are configured to be movable relative to the first deformable functional member 14. The control unit 40 is connected to the first force-applying member 51, the second force-applying member 52, and the processor 33. The control component 40 controls the first force-applying component 51 to apply an external force to the first deformation functional component 14 along the second direction Y, and controls the second force-applying component 52 to apply an external force to the first deformation functional component 14 along the third direction Z, and generates control commands based on frequency difference information to dynamically adjust the magnitude of the external force applied by the first force-applying component 51 and the second force-applying component 52 to the first deformation functional component 14.

[0111] By setting the first force-applying component 51 and the second force-applying component 52, external forces can be applied to the first deformation functional component 14 along the second direction Y and the third direction Z, respectively, thereby enabling more precise control over the deformation and stress transmission direction of the first deformation functional component 14, which is beneficial to further improve the accuracy of frequency difference adjustment.

[0112] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions. All technical features and optional technical features of this application can be combined to form new technical solutions.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A dual-frequency laser frequency difference adjustment system based on stress transfer, characterized in that, include: A dual-frequency laser includes a housing, a magnetic strip, a first reflector, a second reflector, and a first deformation functional component. The housing has an internal cavity that extends through the housing along a first direction. The magnetic strip is disposed on the outside of the housing and is used to apply a magnetic field to the cavity. The direction of the magnetic field is perpendicular to the first direction. The first reflector and the second reflector are respectively disposed on opposite sides of the housing along the first direction and are fixed relative to the housing. One of the first reflector and the second reflector is configured to emit laser light, which includes two linearly polarized beams. The first deformation functional component is connected between the first reflector and the housing. The first deformation functional component is configured to undergo at least plastic deformation when subjected to external force and transmit the stress generated by its own deformation to the first reflector. The detection component includes a polarizer, a detector, and a processor. The dual-frequency laser, the polarizer, and the detector are spaced apart along the first direction, with the polarizer located between the first reflector and the detector. The processor is connected to the detector. The detector is used to receive the laser emitted from the dual-frequency laser and passing through the polarizer, and convert the laser into an electrical signal. The processor is used to receive the electrical signal and generate frequency difference information of the two linearly polarized beams of the laser.

2. The dual-frequency laser frequency difference adjustment system based on stress transfer according to claim 1, characterized in that, The stress-transfer-based dual-frequency laser frequency difference adjustment system further includes a control component and a force-applying component. The force-applying component is configured to be movable relative to the first deformation functional component. The control component is connected to the force-applying component and the processor. The processor is further configured to send the frequency difference information to the control unit, the control unit is configured to generate a control command based on the frequency difference information, and the force application unit is configured to apply a force to the first deformation functional component in response to the control command.

3. The dual-frequency laser frequency difference adjustment system based on stress transfer according to claim 2, characterized in that, The force-applying component includes a first force-applying member and a second force-applying member. The first force-applying member is configured to be movable relative to the first deformable functional member, and the second force-applying member is configured to be movable relative to the first deformable functional member. The first force-applying member is used to apply a force along a second direction to the first deformable functional member in response to the control command, and the second force-applying member is used to apply a force along a third direction to the first deformable functional member in response to the control command, wherein the first direction, the second direction, and the third direction intersect each other.

4. The dual-frequency laser frequency difference adjustment system based on stress transfer according to claim 1, characterized in that, The first deformable functional component includes a first connecting part and a second connecting part, wherein the first connecting part is connected to the tube shell, and the second connecting part is connected between the first connecting part and the first reflector; The stiffness of the first connecting part is greater than that of the second connecting part. The second connecting part is configured to undergo at least plastic deformation when subjected to external force and transmit the stress generated by its own deformation to the first reflector.

5. The dual-frequency laser frequency difference adjustment system based on stress transfer according to claim 4, characterized in that, The second connecting portion includes a main body segment and a thinning segment connected together. The main body segment and the thinning segment are arranged along the first direction. The main body segment has a first thickness d1 along a direction perpendicular to the first direction, and the thinning segment has a second thickness d2 along a direction perpendicular to the first direction, where d1 > d2.

6. The dual-frequency laser frequency difference adjustment system based on stress transfer according to claim 5, characterized in that, The number of the thinning segments is multiple, and the multiple thinning segments include a first thinning segment and a second thinning segment, wherein the first thinning segment and the second thinning segment are spaced apart along the first direction; The first thinning segment has a third thickness d3 along a direction perpendicular to the first direction, and the second thinning segment has a fourth thickness d4 along a direction perpendicular to the first direction, where d3 > d4.

7. The dual-frequency laser frequency difference adjustment system based on stress transfer according to claim 1, characterized in that, The first reflector is configured to emit the laser; The stress-transfer-based dual-frequency laser frequency difference adjustment system further includes a second deformation functional component, which is connected between the second reflector and the shell. The second deformation functional component is configured to generate at least plastic deformation when subjected to external force and transmit the stress generated by its own deformation to the second reflector.

8. The dual-frequency laser frequency difference adjustment system based on stress transfer according to claim 7, characterized in that, It also includes a power supply for applying an electric field to the dual-frequency laser to cause the gas inside the cavity to produce a glow discharge; The first deformation functional component is connected to the positive terminal of the power supply, and the second deformation functional component is connected to the negative terminal of the power supply.

9. A method for adjusting the frequency difference of a dual-frequency laser based on stress transfer, characterized in that, The method is applied to the stress-transfer-based dual-frequency laser frequency difference adjustment system as described in any one of claims 1-8, and the method includes: A dual-frequency laser is provided and fixedly mounted. The dual-frequency laser includes a housing, a magnetic strip, a first reflector, a second reflector, and a first deformation functional component. The housing has an internal cavity that extends through the housing along a first direction. The magnetic strip is disposed outside the housing and is used to apply a magnetic field to the cavity. The direction of the magnetic field is perpendicular to the first direction. The first reflector and the second reflector are respectively disposed on opposite sides of the housing along the first direction and are fixedly mounted relative to the housing. One of the first reflector and the second reflector is configured to emit laser light. The first deformation functional component is connected between the first reflector and the housing. A detection component is provided, wherein the dual-frequency laser, the polarizer of the detection component, and the detector are spaced apart along the first direction, and the polarizer is disposed between the first reflector and the detector, and the processor of the detection component is connected to the detector; The dual-frequency laser is controlled to emit the laser, wherein the laser comprises two linearly polarized beams, and the frequency difference between the two linearly polarized beams changes according to the stress change of the first reflecting mirror. The detector receives the laser light passing through the polarizer and converts the laser light into an electrical signal. The processor receives the electrical signal and generates frequency difference information of the two linearly polarized beams of the laser light. Based on the frequency difference information, the magnitude of the external force applied to the first deformable functional component is dynamically adjusted so that the stress generated during the plastic deformation of the first deformable functional component is transmitted to the first reflector until the frequency difference information meets the preset target value.

10. The dual-frequency laser frequency difference adjustment method based on stress transfer according to claim 9, characterized in that, The step of dynamically adjusting the magnitude of the external force applied to the first deformable functional component based on the frequency difference information, so that the stress generated during the plastic deformation of the first deformable functional component is transmitted to the first reflector, until the frequency difference information meets the preset target value, includes: A control component and a force application component are provided, wherein the force application component is configured to be movably disposed relative to the first deformable functional component, and the control component is connected to the force application component and the processor; The control component controls the force-applying component to apply an external force to the first deformable functional component, and generates control commands based on the frequency difference information to dynamically adjust the magnitude of the external force applied by the force-applying component to the first deformable functional component.

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