Air-cooled ultraviolet laser

Abstract

The utility model relates to an air-cooled ultraviolet laser, belongs to the field of lasers, and aims to solve the problem that an existing ultraviolet laser is complex in structure and large in occupied space. The air-cooled ultraviolet laser comprises a shell, a pumping source, a plurality of reflectors, a Q-switched crystal, a frequency doubling crystal and a cooling fan, the shell is provided with a containing cavity, the pumping source is located in the containing cavity, a working crystal is used for receiving laser emitted by the pumping source, the reflectors are used for forming high-power ultraviolet laser after the working crystal is excited, and the Q-switched crystal is located in the containing cavity. The Q-switched crystal performs tuning processing on the high-power ultraviolet laser, the frequency doubling crystal is used for performing frequency doubling processing on the high-power ultraviolet laser, and the cooling fan is fixedly connected with the shell. The Q-switched crystal and the working crystal are oppositely arranged, and the frequency doubling crystal and the working crystal are arranged in a staggered manner, so that the layout of the frequency doubling crystal, the working crystal and the Q-switched crystal is optimized, gaps among components are reduced, the overall size of the laser is effectively reduced, and the air-cooled ultraviolet laser is simplified.

Description

Technical Field

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

[0002] Ultraviolet lasers can provide high-precision processing capabilities. Because the wavelength of ultraviolet light is short and the spot size after focusing is small, it can perform micron or even sub-micron level processing. At the same time, the heat effect generated by ultraviolet lasers during material processing is small, which has unique advantages when changing the surface properties of materials such as etching, deposition or forming microstructures.

[0003] Existing ultraviolet lasers usually use complex optical resonant cavity designs, and the layout between crystal components, pump sources and heat dissipation systems are relatively complex, resulting in complex structures, large volumes, and large space occupation of ultraviolet lasers. Utility Model Content

[0004] The purpose of the present application is to provide an air-cooled ultraviolet laser to solve the problems of the existing ultraviolet laser having a complex structure, a large volume, and occupying 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 ultraviolet laser, comprising:

[0007] A housing having a receiving cavity;

[0008] A pump source is located in the accommodating cavity;

[0009] A working crystal, used for receiving the laser light emitted by the pump source;

[0010] A plurality of reflectors, wherein the plurality of reflectors are used to interact with the laser emitted by the pump source after the working crystal is excited to form a high-power ultraviolet laser;

[0011] A Q-switched crystal, arranged opposite to the working crystal, and used for tuning the high-power ultraviolet laser;

[0012] A frequency doubling crystal is arranged in a dislocation with the working crystal, and the frequency doubling crystal is used to perform frequency doubling processing on the high-power ultraviolet laser; and

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

[0014] Since the Q-switched crystal and the working crystal are arranged relative to each other, and the frequency-doubling crystal and the working crystal are arranged in a staggered manner, the layout between the working crystal, the Q-switched crystal and the frequency-doubling crystal is optimized, the gap between the components is reduced, and the compact optical cavity design can significantly reduce the overall size of the laser. At the same time, air cooling through the cooling fan helps to improve the heat dissipation efficiency.

[0015] Furthermore, the housing comprises:

[0016] A body having the accommodating cavity; and

[0017] A bottom cover, wherein the bottom cover and the cooling fan are respectively located on two sides of the main body.

[0018] Since the bottom cover and the cooling fan are respectively located on both sides of the main body, space is saved, the space layout is optimized, and the cooling efficiency of the cooling fan is beneficial.

[0019] Furthermore, the bottom cover is provided with a limiting portion, which abuts against the end face of the main body, helping to reduce the risk of movement or vibration of the shell during operation and improve the stability of the ultraviolet laser. At the same time, the limiting portion of the bottom cover abuts against the end face of the main body, making the installation and disassembly of the bottom cover more convenient and facilitating maintenance and repair.

[0020] Furthermore, the main body is provided with a positioning groove, and the positioning groove is adapted to the contour of the bottom cover to accommodate part of the bottom cover.

[0021] Since the positioning groove on the body is adapted to the contour of the bottom cover, the bottom cover can be firmly installed on the shell, thereby improving stability. When the body and the bottom cover are assembled and disassembled, it is convenient to install and disassemble the bottom cover, and it is convenient to perform maintenance and repair.

[0022] Furthermore, the main body is provided with a plurality of fins, and heat dissipation grooves are formed between adjacent fins, and the heat dissipation grooves are arranged opposite to the heat dissipation fan.

[0023] The heat dissipation grooves formed between the multiple fins are arranged opposite to the heat dissipation fan to form an effective heat dissipation channel, which is conducive to the heat dissipation fan to discharge hot air, improve the heat dissipation efficiency, and thus reduce the thermal effect of the ultraviolet laser and reduce the energy loss in the heat dissipation process.

[0024] Furthermore, the body and the bottom cover are both provided with connecting holes, and the connecting holes are used for threadedly connecting the body and the bottom cover.

[0025] Since the main body and the bottom cover are connected by threads, a stable connection is formed, which reduces the risk of movement or vibration of the shell during operation and improves the stability of the ultraviolet laser; at the same time, the threaded connection between the main body and the bottom cover makes the installation and disassembly of the bottom cover more convenient.

[0026] Furthermore, the body is provided with a mounting groove, which is used to position and install the Q-switched crystal, so as to facilitate the positioning of the Q-switched crystal, make the installation and removal of the Q-switched crystal more convenient, save space, and make the overall structure of the ultraviolet laser more compact.

[0027] Furthermore, the air-cooled ultraviolet laser also includes a lens holder, which is fixed to the body and located on a side close to the Q-switched crystal, so that the installation and removal of the lens in the lens holder are more convenient, and the lens holder and the lens can be assembled into one and then assembled, thereby improving assembly.

[0028] Furthermore, the air-cooled ultraviolet laser also includes a refrigerator, the refrigerator is fixed to the body, and the refrigerator is spaced apart from the heat dissipation fan.

[0029] The provision of a refrigerator helps to maintain the stability of the internal temperature of the ultraviolet laser, and the refrigerator and the cooling fan are spaced apart so that the ultraviolet laser can dissipate heat through the refrigerator and the cooling fan, thereby improving the stability of the ultraviolet laser.

[0030] Furthermore, the air-cooled ultraviolet laser also includes a plurality of protective nets, and each of the refrigerator and the heat dissipation fan is connected to a corresponding protective net.

[0031] Protecting the cooler and cooling fan by a protective net can reduce the risk of damage to the cooler and cooling fan by debris, reduce their risk of damage, and improve their reliability and service life.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. Since the Q-switched crystal and the working crystal are arranged relative to each other, and the frequency-doubling crystal and the working crystal are arranged in a staggered manner, the layout between the working crystal, the Q-switched crystal and the frequency-doubling crystal is optimized, the wiring between components is reduced, and the gap between components is reduced, thereby reducing the overall size of the ultraviolet laser, making it more compact, and simplifying the structure of the laser.

[0034] 2. Air-cooled UV lasers are cooled by cooling fans, which helps to improve heat dissipation efficiency and reduce heat accumulation. At the same time, since the cooling fan is fixedly connected to the housing, the laser's dependence on the environment is reduced, allowing the laser to work stably in a variety of environments, making maintenance and overhaul more convenient and reducing operational difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A top view of an air-cooled ultraviolet laser provided in an embodiment of the present application;

[0036] Figure 2An exploded diagram of an air-cooled ultraviolet laser provided in an embodiment of the present application;

[0037] Figure 3 for Figure 2 An exploded view of an air-cooled UV laser, with the bottom cover hidden;

[0038] Figure 4 for Figure 2 An exploded view of an air-cooled UV laser from another perspective;

[0039] Figure 5 A schematic diagram of the structure of an air-cooled ultraviolet laser provided in an embodiment of the present application; and

[0040] Figure 6 A schematic diagram of the structure of a main body provided in an embodiment of the present application.

[0041] Description of reference numerals:

[0042] 1. Shell; 11. Main body; 111. Positioning groove; 112. Mounting groove; 113. Accommodating cavity; 114. Fin; 115. Heat dissipation groove; 12. Bottom cover; 121. Limiting part; 13. Connecting hole;

[0043] 2. Pump source; 3. Working crystal; 4. Reflector; 5. Q-switched crystal; 6. Frequency-doubling crystal; 7. Cooling fan; 8. Lens support; 9. Refrigerator; 10. Protective net. DETAILED DESCRIPTION

[0044] The specific implementation methods of the present application are described in detail below with reference to the accompanying drawings.

[0045] 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.

[0046] 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.

[0047] UV lasers can provide high-precision processing capabilities because of the short wavelength of UV light and the small spot size after focusing, which enables micron or even submicron level processing and has unique advantages. Existing UV lasers usually use complex optical cavity designs, and the layout and connection between the reflectors and crystal components are relatively complex, resulting in a large volume of the entire optical cavity. The design of the pump source is relatively complex, which makes the layout between the pump source and other devices complex, resulting in a complex structure of the UV laser, a large volume, and a large space. Therefore, the UV laser needs to be optimized.

[0048] Figure 1 A top view of an air-cooled ultraviolet laser provided in an embodiment of the present application; Figure 2 An exploded diagram of an air-cooled ultraviolet laser provided in an embodiment of the present application; Figure 3 for Figure 2 An exploded view of an air-cooled UV laser, with the bottom cover hidden; Figure 4 for Figure 2 An exploded view of an air-cooled UV laser from another perspective.

[0049] like Figure 1 to Figure 4 As shown, the embodiment of the present application provides an air-cooled ultraviolet laser, including a housing 1, a pump source 2, a working crystal 3, a reflector 4, a Q-switched crystal 5, a frequency-doubling crystal 6, and a cooling fan 7. The housing 1 is provided with a housing cavity 113, the pump source 2 is located in the housing cavity 113, the working crystal 3 is used to receive the laser emitted by the pump source 2, the multiple reflectors 4 are used to interact with the laser emitted by the pump source 2 after the working crystal 3 is excited to form a high-power ultraviolet laser, the Q-switched crystal 5 is arranged opposite to the working crystal 3, the Q-switched crystal 5 is used to tune the high-power ultraviolet laser, the frequency-doubling crystal 6 is arranged in a staggered shape with the working crystal 3, the frequency-doubling crystal 6 is used to perform frequency-doubling processing on the high-power ultraviolet laser, and the cooling fan 7 is fixedly connected to the housing 1.

[0050] Specifically, the housing 1 is made of high-strength material, has sufficient mechanical strength and thermal stability, and can withstand the heat and pressure generated by the laser during operation. A housing 1 is provided with a housing cavity 113 for accommodating a pump source 2, a working crystal 3, a reflector 4, a Q-switched crystal 5 and a frequency-doubling crystal 6, and a heat dissipation fan 7 is fixed on the outside of the housing 1. The pump source 2 uses a laser diode as a pump source, which can provide sufficient energy to excite the working crystal. The pump source 2 is located in the housing cavity 113 and is arranged opposite to the working crystal 3 to achieve laser excitation and amplification. The working crystal uses Nd:YAG crystal as a working crystal, which can absorb the laser emitted by the pump source and amplify it. The reflector 4 includes two high reflectors and a low reflector. The two high reflectors and are located inside the housing 1, and are used to form an optical cavity, so that the working crystal 3 interacts with the laser emitted by the pump source 2 to form a high-power ultraviolet laser. The low reflector is used to output a high-power ultraviolet laser. The Q-switched crystal 5 uses a KTP crystal, which can tune the high-power ultraviolet laser to generate the required laser pulses. The BBO crystal is used as the frequency doubling crystal 6, which can perform frequency doubling processing on the high-power ultraviolet laser to generate ultraviolet laser with a higher frequency. The heat dissipation fan 7 is fixedly connected to the housing 1, and can discharge the heat generated inside the housing 1.

[0051] It should be noted that tuning refers to changing the output wavelength of a laser by changing the characteristics or parameters of certain components within the laser. For example, in a UV laser, tuning refers to controlling the frequency of the laser by changing the temperature or pressure of the Q-switched crystal, thereby adjusting the wavelength of the output laser.

[0052] Second Harmonic Generation (SHG) is a nonlinear optical process that allows the frequency of the input laser to be doubled through a nonlinear optical crystal, thereby generating a laser output with a new frequency. In ultraviolet lasers, the frequency doubling process is usually used to convert the input laser (usually the near-infrared band) to the ultraviolet band. Nonlinear optical crystals such as BBO (β-BaB2O4), LBO (LiB3O5) or KDP (KH2PO4) are usually used to achieve the frequency doubling process. These crystals can effectively generate frequency-doubled light under the excitation of the laser, that is, the frequency of the output laser is twice the frequency of the input laser.

[0053] Since the air-cooled ultraviolet laser is cooled by the cooling fan 7, it helps to improve the heat dissipation efficiency and reduce heat accumulation. At the same time, since the cooling fan 7 is fixedly connected to the housing 1, the laser's dependence on the environment is reduced, so that the laser can work stably in a variety of environments, making maintenance and inspection more convenient and reducing the difficulty of operation.

[0054] By optimizing the layout among the working crystal 3, the Q-switching crystal 5 and the frequency doubling crystal 6, the wiring between components is reduced, and the gaps between components are reduced, thereby reducing the overall size of the ultraviolet laser, making it more compact, and simplifying the structure of the laser.

[0055] The working principle of the air-cooled ultraviolet laser in the embodiment of the present application is as follows:

[0056] (1) Excitation stage: The pump source 2 (such as a laser diode) is located in the housing 113 in the housing 1 and provides energy to the working crystal 3 (such as a Nd:YAG crystal). The doping element (such as neodymium) in the working crystal 3 absorbs the energy and is excited to a higher energy level.

[0057] (2) Light amplification stage: The excited working crystal 3 interacts with the laser light generated by the pump source 2 through multiple mirrors 4. These mirrors 4 form an optical cavity, and the excited energy level in the working crystal 3 is amplified through nonlinear optical effects (such as the Stark effect) to form a laser with higher power.

[0058] (3) Q-switched crystal tuning stage: In order to make the laser work at a specific frequency, a Q-switched crystal 5 (such as a KTP crystal) is introduced. The Q-switched crystal 5 is arranged opposite to the working crystal 3. By changing its temperature or pressure, the frequency of the laser can be controlled, thereby adjusting the wavelength of the output laser.

[0059] (4) Frequency doubling stage: When the laser passes through the Q-switched crystal 5, due to the nonlinear optical effect, the laser undergoes a frequency doubling process in the crystal, that is, the photon is converted into two new photons, one at the frequency doubling position of the original frequency, and the other at a frequency near the frequency doubling point of the original frequency.

[0060] (5) Output stage: The laser light after 5-fold frequency doubling by the Q-switched crystal is output through a low-reflection mirror. The low-reflection mirror allows a portion of the laser light to pass through, forming ultraviolet laser output.

[0061] In some embodiments, the housing 1 includes a body 11 and a bottom cover 12 , wherein the body 11 has a receiving cavity 113 , and the bottom cover 12 and the cooling fan 7 are respectively located on two sides of the body 11 .

[0062] Specifically, a housing cavity 113 is provided inside the body 11 to accommodate the pump source 2, the working crystal 3, the reflector 4, the Q-switched crystal 5 and the frequency doubling crystal 6. The bottom cover 12 is made of a lightweight material, and the bottom cover 12 is fixedly connected to the body 11. The bottom cover 12 and the cooling fan 7 are respectively located on both sides of the body 11, which is conducive to the cooling fan 7 to dissipate heat and improve the cooling efficiency. Since the bottom cover 12 and the cooling fan 7 are respectively located on both sides of the body 11, space is saved, the spatial layout is optimized, and the cooling efficiency of the cooling fan 7 is conducive.

[0063] In some embodiments, the bottom cover 12 is provided with a limiting portion 121 , and the limiting portion 121 abuts against an end surface of the body 11 .

[0064] Specifically, the limiting portion 121 of the bottom cover 12 is bent, and the contour of the limiting portion 121 is adapted to the end face of the body 11. When the bottom cover 12 and the body 11 are installed, the limiting portion 121 abuts against the end face of the body 11, so that the bottom cover 12 and the body 11 are quickly positioned. At the same time, the bottom cover 12 is fixedly connected to the body 11 through other fixing components, which helps to reduce the risk of movement or vibration of the housing 1 during operation and improve the stability of the ultraviolet laser. Since the limiting portion 121 of the bottom cover 12 abuts against the end face of the body 11, the installation and removal of the bottom cover 12 is more convenient, which is convenient for maintenance and repair.

[0065] Figure 5 A schematic diagram of the structure of an air-cooled ultraviolet laser provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, in some embodiments, the body 11 is provided with a plurality of fins 114 , and heat dissipation slots 115 are formed between adjacent fins 114 , and the heat dissipation slots 115 are arranged opposite to the heat dissipation fan 7 .

[0066] Specifically, the plurality of fins 114 of the body 11 are arranged at equal intervals, and heat dissipation grooves 115 are formed between adjacent fins 114. When the heat dissipation fan 7 dissipates heat, the heat dissipation grooves 115 form a heat dissipation channel, which is conducive to the heat dissipation fan to discharge heat and improve the heat dissipation efficiency. Since the heat dissipation grooves 115 formed between the plurality of fins 114 are arranged opposite to the heat dissipation fan 7, an effective heat dissipation channel is formed, which is conducive to improving the heat dissipation efficiency of the heat dissipation fan 7, thereby reducing the thermal effect of the ultraviolet laser and reducing the energy loss in the heat dissipation process.

[0067] Figure 6 A schematic diagram of the structure of a main body provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, in some embodiments, the body 11 is provided with a positioning groove 111 , and the positioning groove 111 is adapted to the contour of the bottom cover 12 to accommodate a portion of the bottom cover 12 .

[0068] Specifically, the positioning groove 111 is roughly stepped, and the positioning groove 111 of the body 11 is adapted to the contour of the bottom cover 12. For example, the positioning groove 111 is located at the edge of the body 11 and is concave toward the accommodating cavity 113. When the bottom cover 12 covers the accommodating cavity 113, the bottom cover 12 is located in the positioning groove 111. At this time, the top surface of the bottom cover 12 is flush with the top surface of the body 11, and the limiting portion 121 of the bottom cover 12 abuts against the end surface of the body 11 (see Figure 4 ).

[0069] Since the positioning groove 111 on the body 11 is adapted to the contour of the bottom cover 12, the bottom cover 12 can be firmly installed on the housing 1, thereby improving stability. When the body 11 and the bottom cover 12 are installed and removed, it is convenient to install and remove the bottom cover 12, and to perform maintenance and repair.

[0070] In some embodiments, both the body 11 and the bottom cover 12 are provided with a connection hole 13 , and the connection hole 13 is used to threadably connect the body 11 and the bottom cover 12 .

[0071] Specifically, there are multiple connection holes 13, and the body 11 and the bottom cover 12 are both provided with multiple connection holes 13, and the connection holes 13 are used to thread the body 11 and the bottom cover 12. Since the body 11 and the bottom cover 12 are connected by threads, a stable connection is formed, which reduces the risk of movement or vibration of the housing 1 during operation, and improves the stability of the ultraviolet laser; at the same time, the threaded connection between the body 11 and the bottom cover 12 makes the installation and removal of the bottom cover 12 more convenient.

[0072] In some embodiments, the body 11 is provided with a mounting groove 112 , and the mounting groove 112 is used for positioning and mounting the Q-switched crystal 5 .

[0073] Specifically, the mounting groove 112 is located in the accommodating cavity 113, and the mounting groove 112 is used to position and install the Q-switched crystal 5. The design of the mounting groove 112 helps to ensure the stable position of the Q-switched crystal 5 during operation and reduce the risk of displacement. The size and shape of the mounting groove 112 match the size and shape of the Q-switched crystal 5, so that the Q-switched crystal 5 can be accurately installed in the mounting groove 112, avoiding the loosening or displacement of the Q-switched crystal 5 due to vibration, thermal expansion, or other accidental factors during operation. The mounting groove 112 of the body 11 makes the installation and removal of the Q-switched crystal more convenient, saves space, and makes the overall structure of the ultraviolet laser more compact.

[0074] In some embodiments, the air-cooled ultraviolet laser further includes a lens holder 8 , which is fixed to the body 11 , and is located on a side close to the Q-switched crystal 5 .

[0075] Specifically, a lens is arranged in the lens holder 8, and the ultraviolet laser emitted by the air-cooled ultraviolet laser is emitted from the lens. The lens holder 8 is fixed to the body 11, and the lens holder 8 is located on the side close to the Q-switched crystal 5. The design of the lens holder 8 helps to ensure the stable position of the lens during operation and improve the stability of the air-cooled ultraviolet laser. The size and shape of the lens holder 8 match the size and shape of the lens, so that the lens can be accurately installed in the lens holder 8. The lens holder 8 is located on the side close to the Q-switched crystal 5, which makes it more convenient to install and disassemble the lens in the lens holder 8. The lens holder 8 can be assembled into one with the lens before being assembled, thereby improving assembly.

[0076] In some embodiments, the air-cooled ultraviolet laser further includes a refrigerator 9 , which is fixed to the body 11 , and the refrigerator 9 is spaced apart from the cooling fan 7 .

[0077] Specifically, the refrigerator 9 is fixed to the body 11, the refrigerator 9 is located at one end close to the pump source 2, and the refrigerator 9 is located outside the accommodating cavity 113. The refrigerator 9 is provided to help maintain the stability of the internal temperature of the ultraviolet laser, and the refrigerator 9 is spaced apart from the cooling fan 7, so that the ultraviolet laser can dissipate heat through the refrigerator 9 and the cooling fan 7, thereby improving the stability of the ultraviolet laser.

[0078] In some embodiments, the air-cooled ultraviolet laser further includes a plurality of protective nets 10 , and each of the refrigerator 9 and the cooling fan 7 is connected to a corresponding protective net 10 .

[0079] Specifically, in order to better protect the refrigerator 9 and the cooling fan 7, a protective net 10 is provided on the outside of the refrigerator 9 and the cooling fan 7 to reduce the damage of the refrigerator 9 and the cooling fan 7 by debris, reduce the risk of damage, and improve reliability and service life.

[0080] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. 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 ultraviolet laser, characterized in that: include: A housing having a receiving cavity; A pump source is located in the accommodating cavity; A working crystal, used for receiving the laser light emitted by the pump source; A plurality of reflectors, wherein the plurality of reflectors are used to interact with the laser emitted by the pump source after the working crystal is excited to form a high-power ultraviolet laser; A Q-switched crystal, arranged opposite to the working crystal, and used for tuning the high-power ultraviolet laser; A frequency doubling crystal is arranged in a dislocation with the working crystal, and the frequency doubling crystal is used to perform frequency doubling processing on the high-power ultraviolet laser; as well as A heat dissipation fan is fixedly connected to the shell.

2. The air-cooled ultraviolet laser according to claim 1, characterized in that: The housing comprises: A body having the accommodating cavity; and A bottom cover, wherein the bottom cover and the cooling fan are respectively located on two sides of the main body.

3. The air-cooled ultraviolet laser according to claim 2, characterized in that: The bottom cover is provided with a limiting portion, and the limiting portion abuts against the end surface of the main body.

4. The air-cooled ultraviolet laser according to claim 2, characterized in that: The main body is provided with a positioning groove, and the positioning groove is adapted to the contour of the bottom cover to accommodate part of the bottom cover.

5. The air-cooled ultraviolet laser according to claim 2, characterized in that: The body is provided with a plurality of fins, and heat dissipation grooves are formed between adjacent fins. The heat dissipation grooves are arranged opposite to the heat dissipation fan.

6. The air-cooled ultraviolet laser according to claim 2, characterized in that: The body and the bottom cover are both provided with connecting holes, and the connecting holes are used for threaded connection of the body and the bottom cover.

7. The air-cooled ultraviolet laser according to claim 2, characterized in that: The main body is provided with a mounting groove, and the mounting groove is used for positioning and mounting the Q-switched crystal.

8. The air-cooled ultraviolet laser according to claim 2, characterized in that: The air-cooled ultraviolet laser further comprises a lens support, wherein the lens support is fixed to the body and is located at a side close to the Q-switched crystal.

9. The air-cooled ultraviolet laser according to claim 2, characterized in that: The air-cooled ultraviolet laser further comprises a refrigerator, which is fixed to the body and spaced apart from the heat dissipation fan.

10. The air-cooled ultraviolet laser according to claim 9, characterized in that: The air-cooled ultraviolet laser also includes a plurality of protective nets, and each of the refrigerator and the heat dissipation fan is connected to a corresponding protective net.

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