High-power laser shutter for tuning laser beam quality based on wedge mirror

Abstract

The invention discloses a high-power laser shutter for tuning laser beam quality based on a wedge mirror, which comprises an input end, a collimating mirror, a reflecting mirror and a light receiver which are sequentially arranged along a laser input light path, the at least two switchers and the light receiver are sequentially arranged along a light path after reflection of the front surface of the reflecting mirror, the focusing mirror and the output end are sequentially arranged along a light path after reflection of the front surface of each switcher, and each switcher comprises a plurality of wedge-shaped mirrors capable of being cut into the light path. Wherein one of the plurality of output ends outputs a laser beam or at least two output ends simultaneously output the laser beam. Laser beams with different quality requirements can be output, and fine adjustment of the quality of the laser beams is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of laser shutters, and in particular to a high-power laser shutter based on a wedge mirror for tuning the quality of a laser beam. Background Art

[0002] The high-power laser shutter is a key component that can improve the use functions and application scenarios of high-power fiber lasers. It can distribute the single-channel laser output of the fiber laser to multiple output channels by time-sharing or energy-sharing, providing laser sources for multiple processing stations, and realizing the "one machine for multiple uses" of the laser. The time-sharing method of the high-power laser shutter refers to allocating the transmission power of the laser to a certain output channel, that is, only one processing station can use the laser source at the same time. The energy-sharing method of the high-power laser shutter refers to allocating the transmission power of the laser to multiple output channels as needed, that is, multiple processing stations can use the laser source together at the same time. With the development of modern intelligent manufacturing, laser processing requirements are becoming increasingly complex. In the processing process, the laser is required to provide all the power for a single station, and to provide different laser powers for multiple stations in other time periods.

[0003] The optical paths that can realize time-sharing and energy-sharing in the existing technologies at present generally have complex structures and arrangements of the optical paths, and are unable to tune the quality of the laser beam, thus failing to meet the increasingly complex requirements of laser processing. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a high-power laser light gate based on a wedge mirror to tune the laser beam quality, which can output laser beams with different quality requirements and achieve fine-tuning of the beam quality.

[0005] Technical solution: To achieve the above purpose, the present invention discloses a high-power laser light gate based on a wedge-shaped mirror to tune the quality of a laser beam, comprising an input end, a collimating mirror, a reflecting mirror and a light receiver arranged in sequence along the laser input optical path, at least two switches and a light receiver arranged in sequence along the optical path after reflection from the front surface of the reflecting mirror, and a focusing mirror and an output end arranged in sequence along the optical path after reflection from the front surface of each switch, wherein each switch comprises a plurality of wedge-shaped mirrors that can be cut into the optical path, wherein one of the plurality of output ends selects to output a laser beam or at least two output ends simultaneously output laser beams.

[0006] Optionally, when one of the multiple output ends is selected to output a laser beam, the wedge-shaped mirror is a wedge-shaped reflector, the front surface of the wedge-shaped mirror is a wedge-shaped surface, the rear surface of the wedge-shaped mirror is a plane, and the angles between the front surface and the rear surface of each wedge-shaped mirror are different; the angles between the front surface and the rear surface of each wedge-shaped mirror are different.

[0007] Optionally, the focal length of the collimator is f1, the focal length of the focusing lens is f2, the core diameter of the transmission optical fiber connected to the input end is w1, the beam quality of the input laser is BPP1, and the far-field divergence angle of the input laser is calculated to be θ1=BPP1 / w1;

[0008] The coupling spot diameter of the focusing mirror is d = w1 × f2 / f1, and the convergence angle of the beam after focusing is β = θ1 × f1 / f2;

[0009] The optical axis deflection angle γ=2α after being reflected by the front surface of the wedge-shaped mirror on the optical path, where α is the angle between the front surface and the rear surface of the wedge-shaped mirror on the optical path;

[0010] The core diameter of the operating optical fiber connected to the output end is w2, and the beam quality of the output beam is calculated as:

[0011] BPP2=k1×w2×(β+γ)=k1×w2×(θ1×f1 / f2+2α)

[0012] Where k1 is the correction factor of the output beam waist radius, k1=d / d0, and d0 is the ideal diameter of the focusing mirror coupling spot.

[0013] Optionally, the front surface of the wedge-shaped reflector is coated with a reflective film, and the rear surface is coated with an antireflection film.

[0014] Optionally, when at least two output ends output laser beams simultaneously, the wedge-shaped mirror is a wedge-shaped beam splitter, the front surface of the wedge-shaped mirror is a wedge-shaped surface, and the rear surface of the wedge-shaped mirror is a plane; the angles between the front surface and the rear surface of the wedge-shaped mirror on each switch are different.

[0015] Optionally, when the two output ends simultaneously output laser beams, the focal length of the collimating lens is f1, the focal length of the preceding focusing lens is f2, and the focal length of the following focusing lens is f3.

[0016] The core diameter of the transmission optical fiber connected to the input end is w1, the beam quality of the input laser is BPP1, and the far-field divergence angle of the input laser is calculated to be θ1 = BPP1 / w1;

[0017] The diameter of the coupling spot of the previous focusing mirror is d1 = w1 × f2 / f1, and the convergence angle of the beam after focusing is β1 = θ1 × f1 / f2;

[0018] The diameter of the coupled light spot of the latter focusing mirror is d2 = w1 × f3 / f1, and the convergence angle of the focused light beam is β2 = θ1 × f1 / f3;

[0019] The optical axis deflection angle γ after being reflected by the front surface of the wedge-shaped mirror that cuts into the optical path on the previous switcher is 2α1.

[0020] The optical axis deflection angle δ after being reflected by the front surface of the wedge-shaped mirror that cuts into the optical path on the next switch, where n is the refractive index of the wedge-shaped mirror material;

[0021]

[0022] Wherein α1 is the angle between the front surface and the rear surface of the wedge-shaped mirror that cuts into the light path on the previous switch, and α2 is the angle between the front surface and the rear surface of the wedge-shaped mirror that cuts into the light path on the next switch;

[0023] The core diameter of the operating optical fiber connected to the previous output end is w2. The beam quality of the previous output beam is calculated to be BPP2 = k1 × w2 × (β1 + γ) = k1 × w2 × (θ1 × f1 / f2 + 2α1), where k1 is the correction factor of the previous output beam waist, k1 = d1 / d 10 , d 10 is the ideal diameter of the coupling spot of the previous focusing mirror;

[0024] The core diameter of the operating optical fiber connected to the next output end is w3. The beam quality of the next output beam is calculated to be BPP3 = k2 × w2 × (β2 + δ) = k2 × w2 × (θ1 × f1 / f3 + δ), where k2 is the correction factor of the next output beam waist, k2 = d2 / d 20 , d 20 It is the ideal diameter of the coupling spot of the next focusing mirror.

[0025] Optionally, the front surface of the wedge-shaped beam splitter is coated with a beam splitting film, and the rear surface is coated with an antireflection film.

[0026] Optionally, the switch includes a fixing plate, a motor located on the fixing plate, a fixture connected to the motor output shaft through a connector, and a plurality of wedge-shaped mirrors evenly spaced on the fixture. When the motor is started, the fixture is driven to rotate, switching different wedge-shaped mirrors to cut into the light path.

[0027] Optionally, the reflector forms an angle of 45° with the optical axis of the input laser, the center of the front surface of the reflector intersects with the optical axis, the direction of the optical axis after reflection from the front surface of the reflector is horizontal to the right, and the center axis of the light receiver located behind the reflector coincides with the optical axis; the rear surface of the wedge mirror on each switcher forms an angle of 45° with the optical axis after reflection, and the center of the front surface of the wedge mirror intersects with the optical axis.

[0028] Optionally, the surfaces of the collimating mirror and the focusing mirror are coated with anti-reflection films, and the front surface of the reflecting mirror is coated with a high-reflection film.

[0029] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: the present invention realizes the output of laser beams of different qualities from one or more output ends by switching different wedge mirrors into the optical path, thereby improving the functionality of the laser and meeting the complex processing requirements; the present invention outputs laser beams of different qualities from one output end through different wedge angles of the wedge reflector, and realizes the output of laser beams of different qualities from different output ends at the same time through different wedge angles of multiple wedge reflectors arranged in front and behind; the present invention integrates multiple wedge mirrors on the switch, which can reduce the equipment investment cost and improve work efficiency; the present invention integrates the time-sharing, energy-sharing functions and laser beam quality tuning into the same high-power laser light gate device, thereby improving the system's integration, realizing the complex light-sharing requirements of the laser, and improving the system's safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the switch in the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present invention to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity. The same reference numerals throughout represent the same components.

[0034] like Figure 1 As shown, the present invention discloses a high-power laser shutter based on a wedge mirror to tune the quality of a laser beam, comprising a shutter housing 1, an input end 2, a collimator 3, a reflector 4, a light receiver 5, a switch 6, a focusing mirror 7 and an output end 8. The input end 2, the collimator 3, the reflector 4, the light receiver 5, the switch 6, the focusing mirror 7 and the output end 8 are all installed and fixed inside the shutter housing 1.

[0035] The input end 2, collimator 3, reflector 4 and light receiver 5 are sequentially arranged on the shutter housing 1 along the laser input optical path. The input end 2 is connected to the transmission optical fiber of the input laser. The input end 2 is fixed to the outside of the shutter housing 1 by screws. The collimator 3 is fixed to the lens barrel inside the shutter housing 1 by a pressure ring and a threaded ring. The reflector 4 is fixed to the reflector fixture by a threaded pressure ring. The reflector 4 forms an angle of 45° with the optical axis of the input laser. The center of the front surface of the reflector 4 intersects with the optical axis. The direction of the optical axis after reflection from the front surface of the reflector 4 is horizontal to the right. The light receiver 5 is fixed to the inside of the shutter housing 1 by screws. The central axis of the light receiver 5 coincides with the optical axis. The function of the light receiver 5 is to absorb and process the residual laser that passes through the reflector 4 to prevent the residual laser from damaging the inside of the shutter.

[0036] At least two switches and light receivers are sequentially arranged along the optical path after reflection from the front surface of the reflector. In this embodiment, two switches and light receivers are sequentially arranged along the optical path after reflection from the front surface of the reflector. The first switch 6 is fixed to the bottom plate of the shutter housing 1 by screws. The rear surface of the wedge mirror on the first switch 6 forms an angle of 45° with the optical axis, the center of the front surface of the wedge mirror intersects the optical axis, and the direction of the optical axis after reflection from the front surface of the wedge mirror is downward. The second switch 6 is fixed to the bottom plate of the shutter housing 1 by screws. The rear surface of the wedge mirror on the second switch 6 forms an angle of 45° with the optical axis, the center of the front surface of the wedge mirror intersects the optical axis, and the direction of the optical axis after reflection from the front surface of the wedge mirror is downward. The light receiver 5 located behind the switch is fixed to the inside of the shutter housing 1 by screws. The function of the light receiver 5 located behind the switch is to absorb and process the residual laser that passes through the switch 6 to prevent the residual laser from damaging the inside of the shutter.

[0037] A focusing mirror 7 and an output end 8 are sequentially arranged along the light path after reflection from the front surface of each switch 6. The focusing mirror 7 is fixed in the lens barrel inside the shutter housing 1 through a pressure ring and a threaded ring, and the output end 8 is fixed to the outside of the shutter housing 1 through screws.

[0038] like Figure 2As shown, the switch 6 includes a fixing plate 601, a motor 602, a motor output shaft 603, a connector 604, a fixer 605, a locking cap 606, a wedge mirror 1 607, a wedge mirror 2 608, a wedge mirror 3 609 and a wedge mirror 4 610. The fixing plate 601 is fixed on the bottom plate of the shutter housing 1 by screws, and the motor 602 is fixed on the top of the fixing plate 601 by screws. The connector 604, the fixer 605 and the locking cap 606 are arranged in sequence along the direction of the motor output shaft 603 of the motor 602, the motor output shaft 603 and the connector 604 are clamped and fixed by screws, and the fixer 605 is installed on the connector 604 by screws through the locking cap 606, so that the motor output shaft 603 of the motor 602 rotates, and the fixer 605 can be driven to rotate clockwise or counterclockwise. The fixer 605 is cross-shaped, and each of its four cross edges has a groove, which can be used to install and fix the lens. Wedge mirror 1 607 is placed in the left end of the cross of the fixture 605 and is fixed by screw clamping. Wedge mirror 2 608 is placed in the upper end of the cross of the fixture 605 and is fixed by screw clamping. Wedge mirror 3 609 is placed in the right end of the cross of the fixture 605 and is fixed by screw clamping. Wedge mirror 4 610 is placed in the lower end of the cross of the fixture 605 and is fixed by screw clamping. The plane where the rear surface of wedge mirror 1 607, wedge mirror 2 608, wedge mirror 3 609, and wedge mirror 4 610 is located is at an angle of 45° to the optical axis after reflection along the reflector 4. The angles between the front surface and the rear surface of wedge mirror 1 607, wedge mirror 2 608, wedge mirror 3 609, and wedge mirror 4 610 are all different, so that the incident laser can be split and the angle can be fine-tuned. That is, the first switch 6 is provided with wedge mirror 1 607, wedge mirror 2 608, wedge mirror 3 609 and wedge mirror 4 610, and the second switch 6 is provided with wedge mirror 5, wedge mirror 6, wedge mirror 7 and wedge mirror 8, and the angles between the front surfaces and the rear surfaces of the eight wedge mirrors are all different.

[0039] The motor 602 can rotate the fixture 605 through the output shaft 603, so that the wedge mirror 1 607, the wedge mirror 2 608, the wedge mirror 3 609, and the wedge mirror 4 610 enter the optical path in sequence, and the wedge mirrors whose optical paths do not pass through the fixture 605 can also be used. By rotating the two switches 6 respectively and adjusting the positions of the wedge mirrors on the two switches 6 in the optical path, the two output ends 8 can be made to output laser light at one of the two output ends, or the two output ends can be made to output laser light at the same time, so that light beams with different power ratios can be output, and the beam quality of the output light beam can be fine-tuned to meet the process requirements.

[0040] When one of the two output ends is selected to output a laser beam, the wedge mirror is a wedge-shaped reflector, the front surface of the wedge mirror is a wedge-shaped surface, the rear surface of the wedge mirror is a plane, and the angle between the front surface and the rear surface of each wedge mirror is different; the angle between the front surface and the rear surface of each wedge mirror is different; the front surface of the wedge reflector is coated with a reflective film, and the rear surface is coated with an anti-reflection film;

[0041] The focal length of the collimator is f1, the focal length of the focusing lens is f2, the core diameter of the transmission optical fiber connected to the input end is w1, the beam quality of the input laser is BPP1, and the far-field divergence angle of the input laser is calculated to be θ1 = BPP1 / w1;

[0042] The coupling spot diameter of the focusing mirror is d = w1 × f2 / f1, and the convergence angle of the beam after focusing is β = θ1 × f1 / f2;

[0043] The optical axis deflection angle γ=2α after being reflected by the front surface of the wedge-shaped mirror on the optical path, where α is the angle between the front surface and the rear surface of the wedge-shaped mirror on the optical path;

[0044] The core diameter of the operating optical fiber connected to the output end is w2, and the beam quality of the output beam is calculated as:

[0045] BPP2=k1×w2×(β+γ)=k1×w2×(θ1×f1 / f2+2α)

[0046] Where k1 is the correction factor of the output beam waist radius, k1=d / d0, and d0 is the ideal diameter of the focusing mirror coupling spot.

[0047] When the two output ends output laser beams at the same time, the wedge-shaped mirror is a wedge-shaped beam splitter, the front surface of the wedge-shaped mirror is a wedge-shaped surface, and the rear surface of the wedge-shaped mirror is a plane; the angle between the front surface and the rear surface of the wedge-shaped mirror on each switch is different; the front surface of the wedge-shaped beam splitter is coated with a beam splitter film, and the rear surface is coated with an anti-reflection film, and the splitting rate of the beam splitter film on the front surface determines the splitting ratio of the laser energy.

[0048] When the two output ends output laser beams at the same time, the focal length of the collimating lens is f1, the focal length of the previous focusing lens is f2, and the focal length of the next focusing lens is f3.

[0049] The core diameter of the transmission optical fiber connected to the input end is w1, the beam quality of the input laser is BPP1, and the far-field divergence angle of the input laser is calculated to be θ1 = BPP1 / w1;

[0050] The diameter of the coupling spot of the previous focusing mirror is d1 = w1 × f2 / f1, and the convergence angle of the beam after focusing is β1 = θ1 × f1 / f2;

[0051] The diameter of the coupled light spot of the latter focusing mirror is d2 = w1 × f3 / f1, and the convergence angle of the focused light beam is β2 = θ1 × f1 / f3;

[0052] The optical axis deflection angle γ after being reflected by the front surface of the wedge-shaped mirror that cuts into the optical path on the previous switcher is 2α1.

[0053] The optical axis deflection angle δ after being reflected by the front surface of the wedge-shaped mirror that cuts into the optical path on the next switch, where n is the refractive index of the wedge-shaped mirror material;

[0054]

[0055] Wherein α1 is the angle between the front surface and the rear surface of the wedge-shaped mirror that cuts into the light path on the previous switch, and α2 is the angle between the front surface and the rear surface of the wedge-shaped mirror that cuts into the light path on the next switch;

[0056] The core diameter of the operating optical fiber connected to the previous output end is w2. The beam quality of the previous output beam is calculated to be BPP2 = k1 × w2 × (β1 + γ) = k1 × w2 × (θ1 × f1 / f2 + 2α1), where k1 is the correction factor of the previous output beam waist, k1 = d1 / d 10 , d 10 is the ideal diameter of the coupling spot of the previous focusing mirror;

[0057] The core diameter of the operating optical fiber connected to the next output end is w3. The beam quality of the next output beam is calculated to be BPP3 = k2 × w2 × (β2 + δ) = k2 × w2 × (θ1 × f1 / f3 + δ), where k2 is the correction factor of the next output beam waist, k2 = d2 / d 20 , d 20 It is the ideal diameter of the coupling spot of the next focusing mirror.

[0058] The surfaces of the collimator 3 and the focusing mirror 7 are coated with an anti-reflection film, and the front surface of the reflector 4 is coated with a high-reflection film. The film layers coated on the lens surface can withstand the irradiation of high-power lasers for a long time. The fixing devices of the collimator 3 and the focusing mirror 7 have a water cooling function, and the thermal effect generated by the laser action can be removed through water circulation cooling. The spatial position of the focusing mirror 7 can be adjusted by the coupling adjustment mechanism, thereby changing the position and size of the focusing spot on the end face of the optical fiber, so as to facilitate the coupling of the laser to the operating optical fiber in the output end 8 for transmission.

Claims

1. A high-power laser shutter based on a wedge mirror to tune the quality of laser beam, characterized by: The invention comprises an input end, a collimating mirror, a reflecting mirror and a light receiver which are sequentially arranged along the laser input optical path, at least two switches and a light receiver which are sequentially arranged along the optical path after reflection from the front surface of the reflecting mirror, and a focusing mirror and an output end which are sequentially arranged along the optical path after reflection from the front surface of each switcher, wherein each switch comprises a plurality of wedge-shaped mirrors which can be cut into the optical path, wherein one of the plurality of output ends outputs a laser beam or at least two output ends output laser beams simultaneously.

2. The high-power laser shutter based on the wedge mirror for tuning the laser beam quality according to claim 1, characterized in that: When one of the multiple output ends is selected to output a laser beam, the wedge-shaped mirror is a wedge-shaped reflector, the front surface of the wedge-shaped mirror is a wedge-shaped surface, the rear surface of the wedge-shaped mirror is a plane, and the angles between the front surface and the rear surface of each wedge-shaped mirror are different; the angles between the front surface and the rear surface of each wedge-shaped mirror are different.

3. The high-power laser shutter based on the wedge mirror for tuning the laser beam quality according to claim 2, characterized in that: The focal length of the collimator is f1, the focal length of the focusing lens is f2, the core diameter of the transmission optical fiber connected to the input end is w1, the beam quality of the input laser is BPP1, and the far-field divergence angle of the input laser is calculated to be θ1 = BPP1 / w1; The coupling spot diameter of the focusing mirror is d = w1 × f2 / f1, and the convergence angle of the beam after focusing is β = θ1 × f1 / f2; The optical axis deflection angle γ=2α after being reflected by the front surface of the wedge-shaped mirror on the optical path, where α is the angle between the front surface and the rear surface of the wedge-shaped mirror on the optical path; The core diameter of the operating optical fiber connected to the output end is w2, and the beam quality of the output beam is calculated as: BPP2=k1×w2×(β+γ)=k1×w2×(θ1×f1 / f2+2α) Where k1 is the correction factor of the output beam waist radius, k1=d / d0, and d0 is the ideal diameter of the focusing mirror coupling spot.

4. The high-power laser shutter based on a wedge-shaped mirror for tuning the laser beam quality according to claim 2, characterized in that: The front surface of the wedge-shaped reflector is coated with a reflective film, and the rear surface is coated with an anti-reflection film.

5. The high-power laser shutter based on a wedge mirror for tuning the laser beam quality according to claim 1, characterized in that: When at least two output ends output laser beams simultaneously, the wedge mirror is a wedge-shaped beam splitter, the front surface of the wedge mirror is a wedge-shaped surface, and the rear surface of the wedge mirror is a plane; the angles between the front surface and the rear surface of the wedge mirror on each switch are different.

6. The high-power laser shutter based on the wedge mirror for tuning the laser beam quality according to claim 5, characterized in that: When the two output ends output laser beams at the same time, the focal length of the collimating lens is f1, the focal length of the previous focusing lens is f2, and the focal length of the next focusing lens is f3. The core diameter of the transmission optical fiber connected to the input end is w1, the beam quality of the input laser is BPP1, and the far-field divergence angle of the input laser is calculated to be θ1 = BPP1 / w1; The diameter of the coupling spot of the previous focusing mirror is d1 = w1 × f2 / f1, and the convergence angle of the beam after focusing is β1 = θ1 × f1 / f2; The diameter of the coupled light spot of the latter focusing mirror is d2 = w1 × f3 / f1, and the convergence angle of the focused light beam is β2 = θ1 × f1 / f3; The optical axis deflection angle γ after being reflected by the front surface of the wedge-shaped mirror that cuts into the optical path on the previous switcher is 2α1. The optical axis deflection angle δ after being reflected by the front surface of the wedge-shaped mirror that cuts into the optical path on the next switch, where n is the refractive index of the wedge-shaped mirror material; Wherein α1 is the angle between the front surface and the rear surface of the wedge-shaped mirror that cuts into the light path on the previous switch, and α2 is the angle between the front surface and the rear surface of the wedge-shaped mirror that cuts into the light path on the next switch; The core diameter of the operating optical fiber connected to the previous output end is w2. The beam quality of the previous output beam is calculated to be BPP2 = k1 × w2 × (β1 + γ) = k1 × w2 × (θ1 × f1 / f2 + 2α1), where k1 is the correction factor of the previous output beam waist, k1 = d1 / d 10 , d 10 is the ideal diameter of the coupling spot of the previous focusing mirror; The core diameter of the operating optical fiber connected to the next output end is w3. The beam quality of the next output beam is calculated to be BPP3 = k2 × w2 × (β2 + δ) = k2 × w2 × (θ1 × f1 / f3 + δ), where k2 is the correction factor of the next output beam waist, k2 = d2 / d 20 , d 20 It is the ideal diameter of the coupling spot of the next focusing mirror.

7. The high-power laser shutter based on a wedge mirror for tuning the laser beam quality according to claim 5, characterized in that: The front surface of the wedge-shaped beam splitter is coated with a beam splitting film, and the rear surface is coated with an anti-reflection film.

8. The high-power laser shutter based on a wedge mirror to tune the laser beam quality according to claim 1, characterized in that: The switch includes a fixing plate, a motor located on the fixing plate, a fixing device connected to the motor output shaft through a connector, and a plurality of wedge-shaped mirrors evenly spaced on the fixing device. When the motor is started, the fixing device is driven to rotate, and different wedge-shaped mirrors are switched to cut into the light path.

9. The high-power laser shutter based on a wedge mirror for tuning the laser beam quality according to claim 1, characterized in that: The reflector forms an angle of 45° with the optical axis of the input laser, the center of the front surface of the reflector intersects with the optical axis, the direction of the optical axis after reflection from the front surface of the reflector is horizontal to the right, and the center axis of the light receiver located behind the reflector coincides with the optical axis; the rear surface of the wedge mirror on each switch forms an angle of 45° with the optical axis after reflection, and the center of the front surface of the wedge mirror intersects with the optical axis.

10. The high-power laser shutter based on a wedge mirror for tuning the laser beam quality according to claim 1, characterized in that: The surfaces of the collimating mirror and the focusing mirror are both coated with anti-reflection films, and the front surface of the reflecting mirror is coated with a high-reflection film.

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