A holmium laser with four rods arranged side by side in a common cavity

Abstract

The present invention relates to the field of holmium laser technology, and specifically to a holmium laser with four rods arranged side by side in a common cavity, including a housing, and further including: four main bottom plates, the four main bottom plates are parallel to each other and are arranged side by side in pairs and movably arranged in the housing; a secondary bottom plate, the secondary bottom plate is located in the middle of the four main bottom plates and is parallel to the main bottom plates; a scissor-type moving mechanism, the scissor-type moving mechanism is arranged in the housing and is connected to the secondary bottom plate. When the main heat detector on a certain main bottom plate detects an abnormality, the scissor-type moving mechanism drives the secondary bottom plate to move to the original position of the main bottom plate, and pushes the main bottom plate to slide horizontally, so that the secondary laser cavity can replace the main laser cavity on the main bottom plate to continue working, so that the laser can output normally; at the same time, the main laser cavity on the main bottom plate stops working to reduce heat, thereby avoiding too high temperature inside the laser, greatly reducing the failure rate of the laser, and ensuring the stability and service life of the entire system.

Description

Technical Field

[0001] The present invention relates to the technical field of holmium lasers, and specifically to a holmium laser with four rods arranged side by side in a common cavity. Background Technique

[0002] Holmium laser is a solid-state pulsed laser. Its generation is based on the fact that in a laser crystal (yttrium aluminum garnet crystal), holmium (Ho) ions serve as active ions. Through the method of optical pumping, energy is input into the crystal, causing the electrons of the holmium ions to transition from a low energy level to a high energy level. When these electrons in the high energy level transition back to the low energy level, they will emit laser light with a specific wavelength of 2100 nm.

[0003] In the prior art, the patent with the publication number CN219046365U is a 120W holmium laser generator assembly, including a holmium laser generator body. On one side of the outer wall of the holmium laser generator body, a terminal panel is installed. The terminal panel includes an energy acquisition signal terminal and a main control board signal terminal. Inside the holmium laser generator body, a bent partition is installed. A number of light passing holes are opened on the outer wall of the bent partition. On one side of the bent partition, a motor main control board is installed. And on both sides of the holmium laser generator body near the light passing holes, there are respectively a pair of beam steering mechanisms, a number of light source mechanisms, and a number of 45° mirror mechanisms. The pair of beam steering mechanisms and the number of 45° mirror mechanisms are respectively inclinedly distributed, and the number of light source mechanisms are respectively horizontally distributed. And the light source mechanisms form a 45-degree angle with the beam steering mechanisms and the 45° mirror mechanisms respectively. This invention realizes the completely independent operation of four-way holmium laser resonators, can accurately regulate the laser of each cavity according to different needs, and greatly expands the flexibility of application. And, a new adaptive optical technology is adopted, which can automatically compensate for environmental interference and ensure the output accuracy. In addition, the innovative integrated design optimizes the layout of the optical path and the circuit, and can greatly improve the energy conversion efficiency.

[0004] The above technical solution can couple four-way lasers and form multi-way output or single-way output; however, it is found in the use process that when the heat of a certain laser is too high, if this laser is continued to be used, it may cause the temperature inside the laser to rise, and then cause a failure, affecting the stability and service life of the entire system. For this reason, we propose a holmium laser with four rods arranged side by side in a common cavity to well solve the above drawbacks. Summary of the Invention

[0005] The purpose of the present invention is to provide a holmium laser with four rods arranged side by side in a common cavity, which is used to solve the problem that in the prior art, when the heat of a certain laser is too high, if this laser is continued to be used, it may cause the temperature inside the laser to rise, and then cause a failure, affecting the stability and service life of the entire system as mentioned in the above background technique.

[0006] The present invention is achieved through the following technical solution: a four-rod parallel common cavity holmium laser, comprising a housing and:

[0007] Four main base plates, which are parallel to each other and movably arranged in pairs in the housing, with a main laser cavity and a main heat detector fixed in sequence from front to back on the top of each main base plate;

[0008] A secondary bottom plate, the secondary bottom plate is located in the middle of the four main bottom plates and is parallel to the main bottom plates, and a secondary laser cavity and a secondary heat detector are fixed on the top of the secondary bottom plate in order from front to back;

[0009] A scissor-type moving mechanism, the scissor-type moving mechanism being disposed in the housing and connected to the auxiliary base plate; the scissor-type moving mechanism being used to push the auxiliary base plate toward any one of the main base plates, so as to cause the main base plate to deviate from its initial position;

[0010] Four horizontal sliding reset mechanisms are arranged in the shell and correspond to each main base plate one by one. The horizontal sliding reset mechanism is used to keep the corresponding main base plate in the initial position at all times when no external force of the system is applied.

[0011] Optionally, the scissor-type moving mechanism is composed of a reversing assembly fixed to the bottom of the auxiliary base plate, two scissor-type guide assemblies fixed in the shell, and a translation assembly fixed in the shell;

[0012] The two scissor-type guide assemblies are respectively located on the front and rear sides of the auxiliary base plate, and the translation assembly is located on the rear sides of the two scissor-type guide assemblies.

[0013] Optionally, the reversing assembly includes a fixed frame fixed to the bottom of the sub-base plate, with hollow rotating shafts rotatably connected to the front and rear sides of the fixed frame respectively, a dual-axis servo motor installed on the fixed frame that is transmission-connected to each hollow rotating shaft, and a mountain-shaped reversing member is provided at the end of each hollow rotating shaft away from the dual-axis servo motor.

[0014] Optionally, the V-shaped reversing member includes a fixed shaft fixed on a fixed frame and movable through the hollow rotating shaft, and two symmetrical reversing rods are fixed at the end of the hollow rotating shaft, and each reversing rod is L-shaped.

[0015] Optionally, the scissors-type guide assembly includes a center disk corresponding to the U-shaped reversing member, two symmetrical scissors arms are fixed on the center disk, and horizontally arranged cross arms are fixed at both ends of each scissors arm, and each cross arm is fixed to the shell at one end away from the scissors arm.

[0016] Optionally, a circular groove for the rotation of the mountain-shaped reversing member is provided in the middle of the central disc. Guide inclined grooves communicating with the circular groove and arranged radially along the circular groove are provided on each scissors arm, and two arc-shaped stoppers are symmetrically fixed in the circular groove; horizontal grooves for the horizontal movement of the mountain-shaped reversing member are provided on each cross arm, and each horizontal groove communicates with the corresponding guide inclined groove.

[0017] Optionally, the translation assembly includes a translation plate arranged in the vertical direction. The lower end of the translation plate is slidably connected to the housing. A chute arranged in the vertical direction is provided on the front side of the translation plate, and a slider slides in the chute. One end of the fixed shaft is fixed to the slider.

[0018] Optionally, the translation assembly further includes a screw sleeve fixed to the rear side of the translation plate. A lead screw arranged in the horizontal direction and in screw fit with the screw sleeve is rotatably connected in the housing, and a single-axis servo motor drivingly connected to the lead screw is fixed in the housing.

[0019] Optionally, the horizontal sliding reset mechanism includes two support plates fixed to the inner side wall of the housing and parallel to each other. The lower surface of the main bottom plate is movably attached to each support plate. A limiting groove arranged in the horizontal direction penetrates through each support plate, and a sliding plate fixed to the main bottom plate slides in each limiting groove;

[0020] Guide rods horizontally movably passing through the sliding plate are fixed in each limiting groove, and a return spring sleeved on the guide rod is arranged on one side of each sliding plate away from the main bottom plate.

[0021] Optionally, a first conductive sheet corresponding to each of the two support plates is embedded at the bottom of the main bottom plate, and the two first conductive sheets are electrically connected to the two electric energy input leads of the main laser cavity respectively;

[0022] A second conductive sheet corresponding to each of the two support plates is embedded at the bottom of the secondary bottom plate, and the two second conductive sheets are electrically connected to the two electric energy input leads of the secondary laser cavity respectively;

[0023] Conductive heads are fixed to the tops of the two support plates, and the two conductive heads are electrically connected to the positive and negative electrodes of an external power source respectively.

[0024] Compared with the prior art, the present invention provides a holmium laser with four rods arranged side by side in a common cavity, having the following beneficial effects:

[0025] 1. The present invention is provided with four main bottom plates, a secondary bottom plate, a scissor-type moving mechanism, and four horizontal sliding and resetting mechanisms. Since the four main bottom plates are arranged in parallel in pairs, and the secondary bottom plate is located in the middle of the four main bottom plates; when the main heat detector on a certain main bottom plate detects an abnormality, the scissor-type moving mechanism drives the secondary bottom plate to move to the original position of this main bottom plate, and pushes this main bottom plate to horizontally slide, so that the secondary laser cavity can replace the main laser cavity on this main bottom plate to continue working, enabling the laser to output normally; at the same time, the main laser cavity on this main bottom plate stops working to reduce heat, thereby avoiding excessive temperature inside the laser, greatly reducing the failure rate of the laser, and ensuring the stability and service life of the entire system.

[0026] 2. The present invention is provided with a commutation component, each scissor-type guiding component, and a translation component. The operator only needs to control the commutation component and the translation component to make the secondary bottom plate move along the scissor-type guiding component, move the secondary bottom plate to the original position of a certain main bottom plate, reducing the operation difficulty, reducing the possibility of operation errors, and having a reasonable layout, being convenient for maintenance and replacement, and reducing the maintenance cost and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective view of the housing of the present invention;

[0028] Figure 2 is a schematic structural diagram of the interior of the housing of the present invention;

[0029] Figure 3 is a schematic structural diagram of the interior of the housing of the present invention from another perspective;

[0030] Figure 4 is a schematic structural diagram of the main bottom plate of the present invention;

[0031] Figure 5 is a schematic structural diagram of the commutation component of the present invention;

[0032] Figure 6 is a schematic structural diagram of the mountain-shaped commutation part of the present invention;

[0033] Figure 7 is a schematic structural diagram of the scissor-type guiding component of the present invention;

[0034] Figure 8 is a schematic structural diagram of the translation component of the present invention;

[0035] Figure 9 is a schematic structural diagram of the horizontal sliding and resetting mechanism of the present invention;

[0036] Figure 10 is a schematic structural diagram before commutation of the present invention;

[0037] Figure 11This is a schematic structural diagram after the commutation of the present invention.

[0038] In the figure: 1. Housing; 2. Main base plate; 3. Main laser cavity; 4. Main heat detector; 5. Sub-base plate; 6. Sub-laser cavity; 7. Sub-heat detector; 8. Scissor moving mechanism; 801. Commutation component; 8011. Fixed frame; 8012. Hollow rotating shaft; 8013. Biaxial servo motor; 8014. Mountain-shaped commutation piece; 80141. Fixed shaft; 80142. Commutation rod; 802. Scissor guiding component; 8021. Central disk; 8022. Scissor arm; 8023. Cross arm; 8024. Circular groove; 8025. Guiding inclined groove; 8026. Cross groove; 8027. Arc-shaped stopper; 803. Translation component; 8031. Translation plate; 8032. Sliding groove; 8033. Nut sleeve; 8034. Lead screw; 8035. Uniaxial servo motor; 8036. Slide block; 9. Horizontal sliding reset mechanism; 901. Support plate; 902. Limit groove; 903. Sliding plate; 904. Guide rod; 905. Reset spring; 10. First conductive sheet; 11. Second conductive sheet; 12. Conductive head. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment: Please refer to Figures 1 to 11 , a holmium laser with four rods arranged side by side in a common cavity, including a housing 1, which provides an installation space for other components in the device.

[0041] This embodiment further includes: four main base plates 2, a sub-base plate 5, a scissor moving mechanism 8, and four horizontal sliding reset mechanisms 9; through the mutual cooperation of the four main base plates 2, the sub-base plate 5, the scissor moving mechanism 8, and the four horizontal sliding reset mechanisms 9 of the present invention, it is possible to solve the problem that when the heat of a certain laser beam is too high, if the laser beam continues to be used, it may cause the temperature inside the laser to rise, thereby triggering a failure and affecting the stability and service life of the entire system.

[0042] In this embodiment, four main bottom plates 2 are arranged in parallel and side by side in the housing 1 in an active manner. A main laser cavity 3 and a main heat detector 4 are sequentially fixed on the top of each main bottom plate 2 from front to back. The front side of the main laser cavity 3 is the light-emitting end, and the main heat detector 4 is located at the rear side of the main laser cavity 3. When the heat of the main laser cavity 3 is detected in real time, it will not affect the normal operation of the main laser cavity 3. A first water inlet hose and a first water outlet hose are respectively connected to both ends of the main laser cavity 3, and the first water inlet hose and the first water outlet hose are respectively connected to the water cooling system in a conducting manner, so as to perform water cooling on the inside of the main laser cavity 3. It should be noted that for the specific structure and working principle of the main laser cavity 3, please refer to the light source mechanism in the comparative document CN219046365U, and no further description will be given here.

[0043] In addition, the auxiliary bottom plate 5 is located in the middle of the four main bottom plates 2 and is parallel to the main bottom plates 2. An auxiliary laser cavity 6 and an auxiliary heat detector 7 are sequentially fixed on the top of the auxiliary bottom plate 5 from front to back. A second water inlet hose and a second water outlet hose are respectively connected to both ends of the auxiliary laser cavity 6, and the second water inlet hose and the second water outlet hose are respectively connected to the water cooling system in a conducting manner, so as to perform water cooling on the inside of the auxiliary laser cavity 6. The structure of the auxiliary laser cavity 6 is the same as that of the main laser cavity 3, and the auxiliary heat detector 7 is used to monitor the temperature of the auxiliary laser cavity 6 in real time.

[0044] The following is an introduction to the scissor-type moving mechanism 8:

[0045] The scissor-type moving mechanism 8 is arranged in the housing 1 and is connected to the auxiliary bottom plate 5. The scissor-type moving mechanism 8 is used to push the auxiliary bottom plate 5 to move in the direction of any main bottom plate 2, so as to cause the main bottom plate 2 to deviate from its initial position. For example, when the main heat detector 4 on a certain main bottom plate 2 detects an abnormality, the scissor-type moving mechanism 8 drives the auxiliary bottom plate 5 to move to the original position of the main bottom plate 2 and pushes the main bottom plate 2 to slide horizontally. Specifically, the scissor-type moving mechanism 8 is composed of a commutation component 801 fixed to the bottom of the auxiliary bottom plate 5, two scissor-type guiding components 802 fixed in the housing 1, and a translation component 803 fixed in the housing 1. The two scissor-type guiding components 802 are respectively located on the front and rear sides of the auxiliary bottom plate 5, and the translation component 803 is located behind the two scissor-type guiding components 802. The presence of the translation component 803 will not affect the light emission of the main laser cavity 3 or the auxiliary laser cavity 6.

[0046] The reversing assembly 801 includes a fixed frame 8011 fixed to the bottom of the sub-base plate 5. Hollow rotating shafts 8012 are rotatably connected to the front and rear sides of the fixed frame 8011. Dual-axis servo motors 8013 are mounted on the fixed frame 8011 and are transmission-connected to each of the hollow rotating shafts 8012. In this embodiment, a gear transmission is employed, but other transmission methods are also possible and will not be described in detail here. A "H"-shaped reversing member 8014 is disposed at one end of each hollow rotating shaft 8012 away from the dual-axis servo motor 8013. When the dual-axis servo motor 8013 is in operation, it drives the hollow rotating shaft 8012 to rotate, thereby driving the "H"-shaped reversing member 8014 to rotate and perform reversing.

[0047] In this embodiment, the V-shaped reversing member 8014 comprises a fixed shaft 80141 mounted on a fixed frame 8011 and movably extending through a hollow rotating shaft 8012. Two symmetrical reversing rods 80142 are fixed to the ends of the hollow rotating shaft 8012. Each reversing rod 80142 is L-shaped. When the hollow rotating shaft 8012 rotates, it drives the two reversing rods 80142 to rotate synchronously. During this process, the fixed shaft 80141 remains stationary.

[0048] Secondly, the scissor-type guide assembly 802 includes a center disk 8021 corresponding to the mountain-shaped reversing member 8014, and two symmetrical scissor arms 8022 are fixed on the center disk 8021. A horizontally arranged cross arm 8023 is fixed at both ends of each scissor arm 8022, and one end of each cross arm 8023 away from the scissor arm 8022 is fixed to the shell 1; the center disk 8021, each scissor arm 8022 and each cross arm 8023 cooperate with each other to form a scissor-type structure.

[0049] It should be noted that a circular groove 8024 is defined in the center of the center disk 8021 for the rotation of the U-shaped diverter 8014. Each scissor arm 8022 is defined by a guide bevel 8025 that is connected to and radially aligned with the circular groove 8024. Two arc-shaped stops 8027 are symmetrically fixed within the circular groove 8024. When reversing is required, the U-shaped diverter 8014 rotates to align with the corresponding guide bevel 8025. The arc-shaped stops 8027 prevent the tilted U-shaped diverter 8014 from smoothly entering the guide bevel 8025. Each cross arm 8023 is defined by a transverse groove 8026 for the horizontal movement of the U-shaped diverter 8014. Each transverse groove 8026 is connected to the corresponding guide bevel 8025. When the inclined U-shaped reversing member 8014 moves horizontally in the transverse groove 8026 , it can drive the corresponding main base plate 2 to slide horizontally.

[0050] It should be noted that since the mountain-shaped reversing member 8014 is composed of a fixed shaft 80141 and two reversing rods 80142 that cooperate with each other; therefore, in this embodiment, the horizontal groove 8026 is composed of three parallel and spaced horizontal grooves, the upper and lower horizontal grooves are respectively used for the horizontal movement of the two reversing rods 80142, and the middle horizontal groove is used for the horizontal movement of the fixed shaft 80141.

[0051] In addition, the translation assembly 803 includes a translation plate 8031 arranged along the vertical direction, and the lower end of the translation plate 8031 is slidingly connected to the shell 1; specifically, a guide slider is fixed at the lower end of the translation plate 8031, and a guide groove for horizontal sliding of the guide slider is opened at the inner bottom of the shell 1. The translation plate 8031 is slidingly connected to the shell 1 through the cooperation of the guide slider and the guide groove.

[0052] A vertically extending slot 8032 is defined on the front side of the translation plate 8031. A slider 8036 slides within the slot 8032, and one end of the fixed shaft 80141 is fixed to the slider 8036. The slider 8036 can only slide up and down within the slot 8032 and cannot rotate. Consequently, the coordination of the slider 8036, the slot 8032, the fixed shaft 80141, and the fixed frame 8011 prevents the sub-base plate 5 from rotating and allows it to move left and right and up and down, driven only by the scissor-type moving mechanism 8.

[0053] It should be noted that the translation assembly 803 further includes a screw sleeve 8033 fixed to the rear side of the translation plate 8031, a screw rod 8034 disposed horizontally and threadedly engaged with the screw sleeve 8033 being rotatably connected within the housing 1, and a single-axis servo motor 8035 in transmission connection with the screw rod 8034 being fixed within the housing 1. When the single-axis servo motor 8035 is in operation, the screw rod 8034 and the screw sleeve 8033 cooperate to drive the translation plate 8031 to move left or right.

[0054] The horizontal sliding reset mechanism 9 is introduced below:

[0055] Four horizontal sliding and resetting mechanisms 9 are arranged in the housing 1 and correspond to the main bottom plates 2 one by one. The horizontal sliding and resetting mechanism 9 is used to keep the corresponding main bottom plate 2 in the initial position when not affected by external system forces. Specifically, the horizontal sliding and resetting mechanism 9 includes two support plates 901 fixed to the inner side wall of the housing 1 and parallel to each other, which are used to support the main bottom plate 2. The lower surface of the main bottom plate 2 is movably attached to each support plate 901, and the main bottom plate 2 can slide left and right along the support plate 901. A limiting groove 902 arranged in the horizontal direction penetrates through each support plate 901, and a sliding plate 903 fixed to the main bottom plate 2 is slidably connected in each limiting groove 902; a guiding rod 904 that horizontally moves through the sliding plate 903 is fixed in each limiting groove 902, so that the sliding plate 903 can only move left and right along the guiding rod 904. A reset spring 905 sleeved on the guiding rod 904 is arranged on one side of each sliding plate 903 away from the main bottom plate 2. When the temperature detected by the main heat detector 4 is normal or the temperature detected by the secondary heat detector 7 is abnormal, the scissor-type moving mechanism 8 can be driven to drive the secondary bottom plate 5 to reset, so that under the action of the reset spring 905, the sliding plate 903 is driven to reset, and then the main bottom plate 2 is driven to reset.

[0056] In this embodiment, a first conductive sheet 10 corresponding to the two support plates 901 one by one is embedded at the bottom of the main bottom plate 2, and the two first conductive sheets 10 are respectively electrically connected to the two power input leads of the main laser cavity 3; a second conductive sheet 11 corresponding to the two support plates 901 one by one is embedded at the bottom of the secondary bottom plate 5, and the two second conductive sheets 11 are respectively electrically connected to the two power input leads of the secondary laser cavity 6; conductive heads 12 are fixed to the tops of the two support plates 901, and the two conductive heads 12 are respectively electrically connected to the positive and negative electrodes of an external power supply. In the initial state, each first conductive sheet 10 at the bottom of the main bottom plate 2 is in contact with the corresponding conductive head 12, and the main laser cavity 3 is in an energized state, so that it can work normally. When the main bottom plate 2 is pushed away from its original position, each first conductive sheet 10 at the bottom of the main bottom plate 2 is not in contact with the conductive head 12, so that the main laser cavity 3 is in a de-energized state, and further the main laser cavity 3 no longer generates heat, and the temperature is lowered. At the same time, the second conductive sheet 11 at the bottom of the secondary bottom plate 5 is in contact with the conductive head 12, so that the secondary laser cavity 6 is energized, and the secondary laser cavity 6 can work instead of the main laser cavity 3.

[0057] The working principle is as follows:

[0058] For the convenience of description, the main bottom plate 2, the main laser cavity 3, the main heat detector 4, the horizontal groove 8026 and the guiding inclined groove 8025 located in the upper left corner are respectively defined as the first main bottom plate, the first main laser cavity, the first main heat detector, the first horizontal groove and the first guiding inclined groove.

[0059] When the first main heat detector detects that the temperature is too high, the biaxial servo motor 8013 operates to drive the hollow rotating shafts 8012 to rotate until the mountain-shaped commutator 8014 contacts the arc-shaped stopper 8027, so that the mountain-shaped commutator 8014 is aligned with the first guiding inclined groove, as Figure 11 shown. Then, the uniaxial servo motor 8035 operates. Through the cooperation of the lead screw 8034 and the nut 8033, it drives the translation plate 8031 to move leftward, and thus drives the mountain-shaped commutator 8014 to move along the first guiding inclined groove through the cooperation of the slider 8036, the sliding groove 8032 and the fixed shaft 80141.

[0060] When the mountain-shaped commutator 8014 moves to the upper limit position of the first guiding inclined groove, the translation plate 8031 continues to move leftward, thereby driving the inclined mountain-shaped commutator 8014 to move leftward along the transverse groove 8026, and further pushing the first main bottom plate leftward away from its original position by the auxiliary bottom plate 5, so that the auxiliary laser cavity 6 replaces the first main laser cavity to operate.

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0062] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A holmium laser with four rods arranged side by side in a common cavity, comprising a housing (1), characterized in that, Also includes: Four main base plates (2), the four main base plates (2) are parallel to each other and are movably arranged in pairs in parallel within the housing (1), and a main laser cavity (3) and a main heat detector (4) are fixed in sequence from front to back on the top of each main base plate (2); A secondary base plate (5), the secondary base plate (5) being located in the middle of the four main base plates (2) and parallel to the main base plates (2), and having a secondary laser cavity (6) and a secondary heat detector (7) fixed in sequence from front to back on the top of the secondary base plate (5); A scissor-type moving mechanism (8), the scissor-type moving mechanism (8) being arranged in the housing (1) and connected to the auxiliary base plate (5); the scissor-type moving mechanism (8) is used to push the auxiliary base plate (5) to move in the direction of any one of the main base plates (2), so as to cause the main base plate (2) to deviate from its initial position; Four horizontal sliding reset mechanisms (9), the four horizontal sliding reset mechanisms (9) being arranged in the housing (1) and corresponding to each main base plate (2) one by one, the horizontal sliding reset mechanisms (9) being used to keep the corresponding main base plate (2) always in an initial position when no external force is applied to the system; The scissor-type moving mechanism (8) is composed of a reversing assembly (801) fixed to the bottom of the auxiliary base plate (5), two scissor-type guide assemblies (802) fixed in the housing (1), and a translation assembly (803) fixed in the housing (1); The two scissor-type guide assemblies (802) are respectively located on the front and rear sides of the auxiliary base plate (5), and the translation assembly (803) is located on the rear side of the two scissor-type guide assemblies (802); The horizontal sliding reset mechanism (9) comprises two supporting plates (901) fixed to the inner side wall of the shell (1) and parallel to each other, the lower surface of the main base plate (2) is movably fitted with each supporting plate (901), and each supporting plate (901) is penetrated by a limiting groove (902) arranged in the horizontal direction, and a sliding plate (903) fixed to the main base plate (2) is slidably connected in each limiting groove (902); A guide rod (904) is fixed in each limiting groove (902) and moves horizontally through the sliding plate (903). A return spring (905) is provided on the side of each sliding plate (903) away from the main base plate (2) and is sleeved on the guide rod (904).

2. A holmium laser with four rods arranged side by side in a common cavity according to claim 1, characterized in that: The reversing assembly (801) comprises a fixing frame (8011) fixed to the bottom of the auxiliary base plate (5); hollow rotating shafts (8012) are rotatably connected to the front and rear sides of the fixing frame (8011); a dual-axis servo motor (8013) is mounted on the fixing frame (8011) and is transmission-connected to each hollow rotating shaft (8012); and a mountain-shaped reversing member (8014) is provided at one end of each hollow rotating shaft (8012) away from the dual-axis servo motor (8013).

3. A holmium laser with four rods arranged side by side in a common cavity according to claim 2, characterized in that: The mountain-shaped reversing member (8014) comprises a fixed shaft (80141) fixed on a fixed frame (8011) and movable through a hollow rotating shaft (8012); two symmetrical reversing rods (80142) are fixed at the ends of the hollow rotating shaft (8012); each reversing rod (80142) is L-shaped.

4. A holmium laser with four rods arranged side by side in a common cavity according to claim 3, characterized in that: The scissor-type guiding assembly (802) includes a central disk (8021) corresponding to the mountain-shaped reversing member (8014). Two symmetrically arranged scissor arms (8022) are fixed on the central disk (8021). Horizontal arms (8023) arranged in the horizontal direction are fixed at both ends of each scissor arm (8022). One end of each horizontal arm (8023) far from the scissor arm (8022) is fixed to the housing (1).

5. A holmium laser with four rods arranged side by side in a common cavity, characterized in that: A circular groove (8024) for the rotation of the mountain-shaped reversing member (8014) is formed in the middle of the central disk (8021). Guiding inclined grooves (8025) which are communicated with the circular groove (8024) and arranged radially along the circular groove (8024) are formed in each scissor arm (8022). Two arc-shaped stoppers (8027) are symmetrically fixed in the circular groove (8024). A horizontal groove (8026) for the horizontal movement of the mountain-shaped reversing member (8014) is formed in each horizontal arm (8023). Each horizontal groove (8026) is communicated with the corresponding guiding inclined groove (8025).

6. A holmium laser with four rods arranged side by side in a common cavity, characterized in that: The translation assembly (803) includes a translation plate (8031) arranged in the vertical direction. The lower end of the translation plate (8031) is slidably connected to the housing (1). A chute (8032) arranged in the vertical direction is formed on the front side of the translation plate (8031). A slider (8036) slides in the chute (8032). One end of the fixed shaft (80141) is fixed to the slider (8036).

7. A holmium laser with four rods arranged side by side in a common cavity, characterized in that: The translation assembly (803) further includes a screw sleeve (8033) fixed to the rear side of the translation plate (8031). A lead screw (8034) arranged in the horizontal direction and in screw fit with the screw sleeve (8033) is rotatably connected in the housing (1). A single-axis servo motor (8035) in transmission connection with the lead screw (8034) is fixed in the housing (1).

8. A holmium laser with four rods arranged side by side in a common cavity according to claim 1, characterized in that: First conductive sheets (10) corresponding to the two support plates (901) are embedded at the bottom of the main bottom plate (2). The two first conductive sheets (10) are respectively electrically connected to the two power input leads of the main laser cavity (3). Second conductive sheets (11) corresponding to the two support plates (901) are embedded at the bottom of the auxiliary bottom plate (5). The two second conductive sheets (11) are respectively electrically connected to the two power input leads of the auxiliary laser cavity (6). Conductive heads (12) are fixed on the tops of the two support plates (901). The two conductive heads (12) are respectively electrically connected to the positive electrode and the negative electrode of an external power supply.

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