Air-cooled fiber laser

Abstract

The utility model relates to an air-cooled optical fiber laser, belongs to the field of lasers, and aims to solve the problems of complex structure and large occupied space of the existing optical fiber laser. The air-cooled optical fiber laser comprises a shell, a pumping source, an optical assembly, a first optical fiber disc, a second optical fiber disc, a gain optical fiber and a cooling fan, and the shell is provided with a containing cavity; the pumping source is positioned in the accommodating cavity and is used for emitting laser; the optical assembly is used for amplifying and outputting the laser emitted by the pumping source; the first optical fiber disc is arranged opposite to the pumping source; the second optical fiber disc and the first optical fiber disc are arranged at an interval, the second optical fiber disc and the first optical fiber disc are both provided with fiber winding grooves, and the pumping source and the optical assembly are both located between the second optical fiber disc and the first optical fiber disc; the gain optical fiber is arranged in the fiber coiling groove; and the cooling fan is fixedly connected with the shell. As the pumping source and the optical assembly are both located between the second optical fiber disc and the first optical fiber disc, the air-cooled optical fiber laser is simplified in structure, and the occupied space is reduced.

Description

Technical Field

[0001] The present application relates to the field of lasers, and in particular, to an air-cooled fiber laser. Background Art

[0002] In recent years, with the rapid development of fiber laser technology and the continuous expansion of its application direction, fiber lasers have been widely used in continuous, quasi-continuous and pulsed lasers. Fiber lasers refer to lasers with glass optical fibers doped with rare earth elements as gain media, generally consisting of laser working media, excitation sources and resonant cavities.

[0003] At the same time, fiber laser sources for some specific applications, such as lighting and providing pumps, can achieve "quasi-all-fiber" within a certain range of technical indicators, while improving the compactness of fiber lasers and significantly reducing development costs. For example, after fiber coupling, the fiber laser enters the fiber grating by fusion, and then fusion into the active fiber. The fiber grating has a high reflectivity of the laser wavelength and is used as a laser cavity mirror. This type of fiber laser has high cost, complex structure, and occupies a large space. Utility Model Content

[0004] The purpose of the present application is to provide an air-cooled fiber laser to solve the problem that the existing fiber laser has a complex structure and occupies a large space.

[0005] In order to solve the above problems, the present application adopts the following technical solutions:

[0006] The present application provides an air-cooled fiber laser, comprising:

[0007] A housing having a receiving cavity;

[0008] A pump source is located in the accommodating cavity, and the pump source is used to emit laser;

[0009] An optical component, used for amplifying and outputting the laser light emitted by the pump source;

[0010] a first optical fiber disk, wherein the first optical fiber disk is arranged opposite to the pump source;

[0011] a second optical fiber tray, spaced apart from the first optical fiber tray, the second optical fiber tray and the first optical fiber tray are both provided with a fiber tray groove, the pump source and the optical component are both located between the second optical fiber tray and the first optical fiber tray;

[0012] A gain optical fiber is installed in the fiber tray; and

[0013] A heat dissipation fan is fixedly connected to the shell.

[0014] The pump source, optical components and gain fiber are installed between the first fiber tray and the second fiber tray, making the structure of the fiber laser more compact, easy to install and maintain, and also saving space. The optical component amplifies the laser emitted by the pump source, improves the output power and beam quality of the laser, and meets the needs of high-power applications. By accurately setting the positions of the first fiber tray and the second fiber tray, and installing the gain fiber in the fiber tray slot, the stability of the laser transmission is ensured, and the distortion of the optical system caused by the movement or vibration of the fiber is reduced. The design of the fiber tray allows the gain fiber to be flexibly installed and replaced, which is convenient for adjusting the performance of the laser according to different application requirements. The heat dissipation fan in the housing effectively cools the inside of the laser to prevent the performance of the optical components and the gain fiber from decreasing due to the increase in temperature, thereby improving the stability and reliability of the laser.

[0015] Furthermore, the housing is provided with a mounting groove, the optical component comprises a Q-switching switch, and the mounting groove is used for positioning and mounting the Q-switching switch.

[0016] The Q-switching switch can precisely control the width and repetition rate of the laser pulse, achieve high peak power laser pulse output, and meet the application requirements of high-power pulsed lasers. By setting the Q-switching switch in the fiber laser and using the mounting groove for stable installation and precise positioning, it not only improves the performance and stability of the laser, but also facilitates the maintenance and loading and unloading of the fiber laser.

[0017] Furthermore, the optical component includes a main control board and a Q-switch driver, the Q-switch driver is used to drive the Q-switch to operate, and the main control board is provided with a control circuit electrically connected to the pump source.

[0018] Through the main control board and the Q-switching switch driver, and provided with a control circuit electrically connected to the pump source, the Q-switching switch driver can accurately control the operation of the Q-switching switch according to the instructions of the main control board, thereby achieving precise control of the laser pulse, and can also achieve precise control of the output energy of the pump source, thereby achieving efficient control of the fiber laser.

[0019] Furthermore, the Q-switching switch is located on one side of the first optical fiber disk, and the main control board and the Q-switching switch driving component are located on the other side of the first optical fiber disk.

[0020] By locating the Q-switching switch, the main control board and the Q-switching switch driving component on both sides of the first optical fiber disk, the layout of the internal components of the optical fiber laser is more reasonable and the space utilization rate is improved.

[0021] Furthermore, the shell is provided with a partition, and the partition is located between the heat dissipation fan and the Q-switching switch driving component.

[0022] By arranging a partition inside the housing, the interference of the cooling fan on the Q-switch driver is effectively reduced, the cooling efficiency and system stability are improved, and at the same time, sensitive components are protected and the reliability of the fiber laser is enhanced.

[0023] Furthermore, the housing is provided with a pillar, the pillar is located between the second optical fiber tray and the first optical fiber tray, and the pillar is used to fix the second optical fiber tray.

[0024] By setting the pillars, the stability of the second optical fiber disk is enhanced, the risk of movement or vibration during operation is reduced, the fluctuation of optical performance caused by optical fiber movement is reduced, the laser output quality is improved, and the accuracy of the internal optical system of the laser is improved.

[0025] Furthermore, there are multiple pillars, and the multiple pillars are arranged in multiple rows.

[0026] The multi-row arrangement of the plurality of pillars can better support the second optical fiber disk, improve the stability of the overall structure, reduce deformation or damage caused by uneven weight, and improve the resistance of the optical fiber laser to vibration and impact.

[0027] Furthermore, the second optical fiber tray is provided with an escape portion, and the escape portion is located at a peripheral side of the second optical fiber tray.

[0028] Since the second optical fiber tray is provided with a relief portion, the relief portion can reduce the squeezing of the optical fiber by the periphery of the second optical fiber tray during installation or maintenance, protect the optical fiber from physical damage, and thus improve the reliability of the laser.

[0029] Furthermore, the shell is provided with a heat conduction hole, and the heat conduction hole is arranged opposite to the heat dissipation fan.

[0030] The provision of heat conduction holes helps to form a good air flow path, so that the hot air inside the shell is directly sucked into the cooling fan through the heat conduction holes, so that the airflow generated by the cooling fan can more effectively pass through the heat source area inside the laser, thereby improving the heat dissipation efficiency and reducing the internal temperature of the laser.

[0031] Furthermore, there are a plurality of heat conduction holes, and the heat dissipation fan and the heat conduction holes are arranged in pairs.

[0032] By providing a plurality of heat conduction holes, each heat dissipation fan corresponds to the plurality of heat conduction holes, forming a plurality of air flow channels, enhancing the air flow, and making the hot air inside the shell evenly distributed, thereby improving the heat dissipation efficiency and uniformity.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. Since the pump source, optical components and gain fiber are installed between the first fiber reel and the second fiber, the structure of the laser is more compact, and space is saved, thereby making the fiber laser structure compact. At the same time, the positions of the first fiber reel and the second fiber reel can be flexibly set, and the installation of the gain fiber in the fiber reel groove can be adjusted, ensuring the stability of laser transmission, and adjusting the performance of the laser according to different application requirements.

[0035] 2. The cooling fan can reduce the thermal damage of the internal components of the laser and extend the service life of the laser. At the same time, the air-cooled design reduces the laser's dependence on the environment, allowing the laser to work stably in a variety of environments and improve its applicability. Compared with water-cooled lasers, air-cooled fiber lasers reduce the complexity of the cooling system, reduce costs, and improve economic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A bottom view of an air-cooled fiber laser provided in an embodiment of the present application;

[0037] Figure 2 A bottom view of another air-cooled fiber laser provided in an embodiment of the present application, wherein a second fiber disk is shown;

[0038] Figure 3 for Figure 2 A schematic diagram of the structure of an air-cooled fiber laser from another perspective, in which the guard plate is hidden;

[0039] Figure 4 An exploded diagram of an air-cooled fiber laser provided in an embodiment of the present application;

[0040] Figure 5 A schematic diagram of the structure of an air-cooled fiber laser provided in an embodiment of the present application; and

[0041] Figure 6 A schematic diagram of the structure of a mounting block provided in an embodiment of the present application.

[0042] Description of reference numerals:

[0043] 1. Shell; 11. Partition; 12. Pillar; 13. Accommodating cavity; 14. Guard plate; 15. Heat conducting hole;

[0044] 16. Mounting block; 161. First side plate; 162. Second side plate; 163. Fin; 164. Mounting plate; 165. Mounting groove; 17. Cover plate;

[0045] 2. Pump source;

[0046] 3. Optical components; 31. Q-switching switch driver; 32. Main control board; 33. Beam combiner; 34. Q-switching switch;

[0047] 4. First optical fiber reel; 5. Second optical fiber reel; 51. Avoidance portion; 6. Gain optical fiber; 7. Cooling fan; 8. Armor holder; P. Fiber reel slot. DETAILED DESCRIPTION

[0048] The specific implementation methods of the present application are described in detail below with reference to the accompanying drawings.

[0049] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0050] It should be understood that the orientation or position relationship is based on the orientation or position relationship shown in the drawings. These orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0051] With the rapid development of fiber laser technology and the continuous expansion of its application direction, fiber lasers have been widely used in continuous, quasi-continuous, and pulsed lasers. Compared with continuous lasers, the advantages of pulsed lasers in precision processing are gradually becoming more prominent. Fiber lasers have been widely used in precision welding, cutting, laser cleaning, laser etching, laser marking, laser degreasing, etc.

[0052] For some specific applications of fiber laser sources, such as lighting and pumping, the fiber laser is coupled to the fiber and then fused into the fiber Bragg grating, which is then fused into the active fiber. The fiber Bragg grating has high reflectivity at the laser wavelength and is used as a laser cavity mirror. This type of fiber laser is costly, complex in structure, and occupies a large space. Therefore, it is necessary to improve the fiber laser.

[0053] Figure 1 A bottom view of an air-cooled fiber laser provided in an embodiment of the present application; Figure 2 A bottom view of another air-cooled fiber laser provided in an embodiment of the present application, wherein a second fiber disk is shown; Figure 3 for Figure 2 A schematic diagram of the structure of an air-cooled fiber laser from another perspective, in which the guard plate is hidden; Figure 4 An exploded view of an air-cooled fiber laser provided in an embodiment of the present application.

[0054] like Figure 1 to Figure 4As shown, the embodiment of the present application provides an air-cooled fiber laser, including a housing 1, a pump source 2, an optical component 3, a first fiber disc 4, a second fiber disc 5, a gain fiber 6 and a cooling fan 7. The housing 1 is provided with a housing cavity 13; the pump source 2 is located in the housing cavity 13, and the pump source 2 is used to emit laser light; the optical component 3 is used to amplify and output the laser light emitted by the pump source 2; the first fiber disc 4 is arranged opposite to the pump source 2; the second fiber disc 5 is arranged at intervals from the first fiber disc 4, and both the second fiber disc 5 and the first fiber disc 4 are provided with a fiber disc groove P, and the pump source 2 and the optical component 3 are located between the second fiber disc 5 and the first fiber disc 4; the gain fiber 6 is installed in the fiber disc groove P; and the cooling fan 7 is fixedly connected to the housing 1.

[0055] Specifically, the pump source 2 includes a primary seed source and a secondary pump, and the optical component 3 includes a high-reflection grating, a low-reflection grating, a beam combiner 33 and a Q-switched switch 34. The primary seed source provides an initial optical signal, and the pump light provided by the secondary pump is combined with the optical signal of the primary seed source through the beam combiner 33. The combined light is amplified by the gain medium in the first fiber disk 4 to generate laser. It should be noted that the laser is reflected back and forth between the high-reflection grating and the low-reflection grating, and is further amplified. When the laser reaches a sufficient intensity, the low-reflection grating allows a portion of the laser to be output to form a laser pulse. The air-cooled fiber laser also includes an armored seat 8, which ensures the stable placement of the gain fiber 6 in the fiber laser. The second fiber disk 5 and the first fiber disk 4 are both provided with a fiber tray groove P, and the gain fiber 6 is installed in the fiber tray groove P. The Q-switched switch 34 is used to control the width and repetition rate of the laser pulse, realize the output of laser pulses with high peak power, and meet the application requirements of high-power pulsed lasers.

[0056] It should be noted that in a fiber laser, various components work together to produce laser output. The primary seed source (Seed Source) provides the initial optical signal, which has the required wavelength and phase characteristics and is the basis for the output of the fiber laser. The secondary pump (Secondary Pump) provides pump energy to the gain medium (such as erbium-doped fiber), excites the energy level in the gain medium, and generates laser. The combiner 33 (Combiner) combines the pump light and the optical signal of the seed source into the same optical fiber, so that the pump light can effectively excite the gain medium. The high reflectivity grating (High Reflectivity Grating) is a reflector of the laser cavity. It has a very high reflectivity and is used to reflect the laser back and forth in the cavity to enhance the gain of the laser. The low reflectivity grating (Low Reflectivity Grating) is another reflector of the laser cavity. It has a lower reflectivity and allows a portion of the laser to be output to form a laser pulse. The primary fiber disk (Primary Fiber Disk) contains the gain medium, where the pump light is absorbed to generate laser. The secondary fiber disk contains additional gain media or other functional optical fibers for further amplifying the laser or adjusting the characteristics of the laser. For example, the primary fiber disk is the first fiber disk 4, and the secondary fiber disk is the second fiber disk 5. The fiber bracket 8 is used to fix and protect the gain fiber 6 to ensure the stability and reliability of the gain fiber 6 during the operation of the fiber laser. Q-switched, which uses Q-switched technology to generate high-energy pulsed lasers, involves changing the optical quality (Q value) in the laser cavity, moving a lens or changing the gas concentration in the cavity. When the Q value is adjusted to a very high value, the light in the laser will reflect back and forth between the two mirrors, accumulating energy until it reaches a threshold and then suddenly releases, generating a very short time (usually nanoseconds or picoseconds) high-power pulse, which has a very high peak power. The function of the Q switch is to control the generation of laser pulses so that the laser can be emitted when needed. It enables lasers to play an important role in industries such as industry and scientific research because it can provide high-energy pulses, which is important for processing hard materials or situations that require precise control.

[0057] Since the pump source 2, the optical component 3 and the gain fiber 6 are installed between the first fiber disk 4 and the second fiber disk 5, the structure of the fiber laser is more compact, which is convenient for installation and maintenance, and also saves space, making the fiber laser compact. At the same time, since the positions of the first fiber disk 4 and the second fiber disk 5 can be flexibly set, and the installation of the gain fiber 6 in the fiber disk groove P can be adjusted, the stability of laser transmission is ensured, and the performance of the laser is adjusted according to different application requirements.

[0058] The optical component 3 amplifies the laser emitted by the pump source 2, thereby improving the output power and beam quality of the laser to meet the needs of high-power applications. By accurately setting the positions of the first fiber disc 4 and the second fiber disc 5, and installing the gain fiber 6 in the fiber disc groove P, the stability of the laser transmission is ensured, and the optical system distortion caused by the movement or vibration of the gain fiber 6 is reduced. The heat dissipation fan 7 in the housing 1 effectively cools the inside of the fiber laser to prevent the performance of the optical component 3 and the gain fiber 6 from decreasing due to temperature increase, thereby improving the stability and reliability of the laser.

[0059] The air-cooled design reduces the fiber laser's dependence on the environment, allowing the fiber laser to work stably in a variety of environments and improving its applicability. Compared with water-cooled lasers, air-cooled fiber lasers reduce the complexity of the cooling system, reduce costs, and improve economic efficiency.

[0060] Figure 5 A schematic diagram of the structure of an air-cooled fiber laser provided in an embodiment of the present application, Figure 6 A schematic diagram of the structure of a mounting block provided in an embodiment of the present application.

[0061] like Figure 5 and Figure 6 As shown, in some embodiments, the housing 1 is provided with a mounting groove 165 , the optical assembly 3 includes a Q-switching switch 34 , and the mounting groove 165 is used to position and install the Q-switching switch 34 .

[0062] Specifically, the housing 1 includes a partition 11, a mounting block 16 and a cover plate 17, wherein the partition 11 separates the heat dissipation fan, the mounting block 16 includes a first side plate 161, a second side plate 162, fins 163 and a mounting plate 164, wherein the mounting plate 164 is provided with a mounting groove 165, the mounting groove 165 is used to position and install the Q-switching switch 34, and the cover plate 17 covers the Q-switching switch 34 in the mounting groove 165. The first side plate 161 and the second side plate 162 are respectively located on both sides of the mounting plate 164, the fins 163 are fixed on the mounting plate 164, and a heat dissipation groove is formed between adjacent fins 163.

[0063] The Q-switching switch 34 can accurately control the width and repetition rate of the laser pulse, achieve high peak power laser pulse output, and meet the application requirements of high-power pulse lasers. By setting the Q-switching switch 34 in the fiber laser and using the mounting groove 165 for stable installation and precise positioning, not only the performance and stability of the fiber laser are improved, but also the maintenance and loading and unloading of the fiber laser are facilitated.

[0064] In some embodiments, the optical component 3 includes a main control board 32 and a Q-switch driver 31 . The Q-switch driver 31 is used to drive the Q-switch 34 to operate. The main control board 32 is provided with a control circuit electrically connected to the pump source 2 .

[0065] Specifically, the main control board 32 includes a microprocessor, a memory, a clock circuit, etc., which are used to control the overall operation of the fiber laser, including the switching of the pump source 2, the driving of the Q-switching switch, the parameter setting of the optical components, etc. The Q-switching switch driver 31 includes a driving circuit and a power amplifier, which are used to receive the control signal of the main control board 32 and drive the switching action of the Q-switching switch 34. Among them, the control circuit electrically connected to the pump source 2 includes signal amplification, filtering, protection and other circuits, which are used to ensure that the pump source 2 can stably and accurately respond to the control signal of the main control board. The main control board 32 is electrically connected to the pump source 2 through the control circuit, and can monitor and adjust the output power, operating frequency and other parameters of the pump source 2 in real time to adapt to different working scenarios and requirements. The Q-switching switch driver 31 is connected to the Q-switching switch 34 through an interface circuit, which can realize fast and accurate control of the Q-switching switch 34 to generate the required laser pulses.

[0066] Through the main control board 32 and the Q-switching switch driver 31, and provided with a control circuit electrically connected to the pump source 2, the Q-switching switch driver 31 can accurately control the operation of the Q-switching switch 34 according to the instructions of the main control board 32, thereby achieving precise control of the laser pulse, and can also achieve precise control of the output energy of the pump source 2, thereby achieving efficient control of the fiber laser.

[0067] In some embodiments, the Q-switching switch 34 is located on one side of the first optical fiber tray 4 , and the main control board 32 and the Q-switching switch driver 31 are located on the other side of the first optical fiber tray 4 .

[0068] Specifically, the beam combiner 33 and the Q-switch 34 are both located on one side of the first optical fiber disk, the Q-switch 34 is in contact with the gain optical fiber 6, and Q-switching processing of the laser is realized. The main control board 32 and the Q-switch driver 31 are located on the other side of the first optical fiber disk 4, and can realize precise control of the Q-switch 34, and the parameters of precise control include pulse width and repetition rate, etc. The main control board 32 is electrically connected to the pump source 2 through the control circuit, and the Q-switch driver 31 is connected to the Q-switch 34 through the interface circuit, which can realize fast and precise control of the Q-switch 34 to generate the required laser pulses.

[0069] Since the Q-switch 34 , the main control board 32 and the Q-switch driver 31 are respectively located on both sides of the first optical fiber disk 4 , the layout of the internal components of the optical fiber laser is more reasonable and the space utilization rate is improved.

[0070] In some embodiments, the housing 1 is provided with a partition 11 , and the partition 11 is located between the cooling fan 7 and the Q-switching switch driving component 31 .

[0071] Specifically, a partition 11 is provided inside the housing 1, and the partition 11 is used to isolate the cooling fan 7 and the Q-switching switch driver 31. The partition 11 can be made of metal or plastic, and has good thermal conductivity and electromagnetic shielding performance. The position of the partition 11 is set so that the airflow generated by the cooling fan 7 can pass through the gain fiber 6 and the optical component 3 more effectively, thereby improving the heat dissipation efficiency. The provision of the partition 11 helps to reduce the influence of the electromagnetic interference generated by the cooling fan 7 on the Q-switching switch driver 31, ensure the stable operation of the Q-switching switch driver 31, and enable the Q-switching switch driver 31 to be independent of the cooling fan 7, which is convenient for maintenance and repair.

[0072] In some embodiments, the housing 1 is provided with a support column 12 . The support column 12 is located between the second optical fiber tray 5 and the first optical fiber tray 4 . The support column 12 is used to fix the second optical fiber tray 5 .

[0073] Specifically, a plurality of pillars 12 are provided inside the housing 1, and the pillars 12 are used to fix the second optical fiber tray 5 to prevent it from moving or vibrating during operation. The pillars 12 can be made of metal or plastic, and have good supporting performance and durability. The number of pillars 12 can be adjusted according to the weight and size of the second optical fiber tray to provide sufficient supporting force. The position design of the pillars 12 enables the second optical fiber tray 5 to maintain horizontal and vertical alignment, ensuring the precise alignment of the optical system.

[0074] By providing the support column 12, the stability of the second optical fiber disk 5 is enhanced, the risk of movement or vibration during operation is reduced, the fluctuation of optical performance caused by the movement of the gain fiber is reduced, the laser output quality is improved, and the accuracy of the internal optical system of the laser is improved.

[0075] In some embodiments, there are multiple pillars 12, and the multiple pillars 12 are arranged in multiple rows.

[0076] Specifically, the number of the pillars 12 is at least two, and the plurality of pillars 12 are arranged in multiple rows, so as to more evenly distribute the weight of the second optical fiber tray 5 and improve the stability of the overall structure. For example, the number of the pillars 12 is four, and the pillars 12 are arranged in two rows and two columns, so as to more evenly distribute the weight of the second optical fiber tray 5 and improve the stability of the overall structure.

[0077] The multi-row arrangement of the plurality of pillars 12 can better support the second optical fiber tray 5, improve the stability of the overall structure, reduce deformation or damage caused by uneven weight, and improve the resistance of the optical fiber laser to vibration and impact.

[0078] In some embodiments, the second optical fiber tray 5 is provided with an escape portion 51 , and the escape portion 51 is located at a peripheral side of the second optical fiber tray 5 .

[0079] Specifically, a relief portion 51 is provided on the peripheral side of the second optical fiber tray 5, and the relief portion 51 is used to protect the optical fiber from peripheral squeezing during installation or maintenance. The relief portion 51 can be made of rubber or plastic, has certain elasticity and toughness, can effectively absorb external forces, and prevent damage to the optical fiber. The provision of the relief portion 51 makes the installation and removal of the second optical fiber tray 5 more convenient, reduces the difficulty of operation, improves the maintenance efficiency, and at the same time, helps to optimize the layout of the optical fiber on the optical fiber tray, makes the arrangement of the optical fiber more neat, and reduces the mutual interference between the optical fibers.

[0080] Since the second optical fiber tray 5 is provided with the avoidance portion 51, the avoidance portion 51 can reduce the squeezing of the optical fiber by the periphery of the second optical fiber tray 5 during installation or maintenance, protect the optical fiber from physical damage, and thus improve the reliability of the laser.

[0081] In some embodiments, the housing 1 is provided with a heat conducting hole 15 , and the heat conducting hole 15 is arranged opposite to the heat dissipation fan 7 .

[0082] Specifically, the housing 1 includes a guard plate 14, and the guard plate 14 and the cover plate 17 are respectively located on the upper and lower sides of the fiber laser (see Figure 4 ), the guard plate 14 is provided with a heat conducting hole 15, and the heat conducting hole 15 is used to guide the hot air inside the housing 1 to be discharged through the hole by the heat dissipation fan. It should be noted that the number of the heat conducting holes 15 can be adjusted according to the size of the housing 1 and the heat dissipation requirements. The heat conducting holes 15 are arranged opposite to the heat dissipation fan 7 to ensure that the hot air inside the housing 1 can be effectively sucked in and discharged, forming a good air flow path.

[0083] The provision of the heat conducting holes 15 helps to form a good air flow path, so that the hot air inside the housing 1 is directly sucked into the cooling fan through the heat conducting holes 15, so that the airflow generated by the cooling fan 7 can more effectively pass through the heat source area inside the fiber laser, thereby improving the heat dissipation efficiency and reducing the internal temperature of the laser.

[0084] like Figure 4 As shown, in some embodiments, there are multiple heat conducting holes 15 , and the heat dissipation fans 7 and the heat conducting holes 15 are arranged in pairs.

[0085] Specifically, a plurality of heat-conducting holes 15 are provided inside the housing 1, and the number of the heat-conducting holes 15 can be adjusted according to the size of the housing and the heat dissipation requirements, and the heat-dissipating fans 7 are arranged in pairs with the heat-conducting holes 15, and each heat-dissipating fan 7 corresponds to a heat-conducting hole 15, forming a plurality of air flow channels. Due to the relative arrangement between the heat-conducting holes 15 and the heat-dissipating fans 7, it can be ensured that the hot air inside the housing 1 can be effectively discharged.

[0086] By providing a plurality of heat conducting holes 15, each heat dissipation fan 7 corresponds to a plurality of heat conducting holes 15, forming a plurality of air flow channels, enhancing air flow, and making the hot air inside the housing 1 evenly distributed, thereby improving heat dissipation efficiency and uniformity.

[0087] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the same. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present application.

Claims

1. An air-cooled fiber laser, characterized in that: include: A housing having a receiving cavity; A pump source is located in the accommodating cavity, and the pump source is used to emit laser; An optical component, used for amplifying and outputting the laser light emitted by the pump source; a first optical fiber disk, wherein the first optical fiber disk is arranged opposite to the pump source; a second optical fiber tray, spaced apart from the first optical fiber tray, the second optical fiber tray and the first optical fiber tray are both provided with a fiber tray groove, the pump source and the optical component are both located between the second optical fiber tray and the first optical fiber tray; A gain optical fiber is installed in the fiber tray; and A heat dissipation fan is fixedly connected to the shell.

2. The air-cooled fiber laser according to claim 1, characterized in that: The housing is provided with a mounting groove, the optical assembly comprises a Q-switching switch, and the mounting groove is used for positioning and mounting the Q-switching switch.

3. The air-cooled fiber laser according to claim 2, characterized in that: The optical component includes a main control board and a Q-switching switch driver, wherein the Q-switching switch driver is used to drive the Q-switching switch to operate, and the main control board is provided with a control circuit electrically connected to the pump source.

4. The air-cooled fiber laser according to claim 3, characterized in that: The Q-switching switch is located on one side of the first optical fiber disk, and the main control board and the Q-switching switch driving component are located on the other side of the first optical fiber disk.

5. The air-cooled fiber laser according to claim 4, characterized in that: The shell is provided with a partition, and the partition is located between the heat dissipation fan and the Q-switching switch driving component.

6. The air-cooled fiber laser according to claim 1, characterized in that: The housing is provided with a pillar, the pillar is located between the second optical fiber tray and the first optical fiber tray, and the pillar is used to fix the second optical fiber tray.

7. The air-cooled fiber laser according to claim 6, characterized in that: The number of the pillars is multiple, and the multiple pillars are arranged in multiple rows.

8. The air-cooled fiber laser according to claim 1, characterized in that: The second optical fiber tray is provided with an escape portion, and the escape portion is located at a peripheral side of the second optical fiber tray.

9. The air-cooled fiber laser according to claim 1, characterized in that: The shell is provided with a heat conduction hole, and the heat conduction hole is arranged opposite to the heat dissipation fan.

10. The air-cooled fiber laser according to claim 9, characterized in that: There are multiple heat conduction holes, and the heat dissipation fans and the heat conduction holes are arranged in pairs.

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