A solid state laser device pumped by a combination of LD and flash lamp

Abstract

The embodiment of the present application discloses a kind of LD and flash lamp mixed pumping solid laser device.In a specific embodiment, the device includes: at least one flash lamp, at least one LD laser, two antireflection devices, laser gain medium, full mirror, output mirror and power control device.The embodiment is pumped by flash lamp and LD laser to laser gain medium, so that laser gain medium simultaneously outputs continuous laser and pulse laser, and the pumping power of flash lamp and LD laser is controlled by power control device, and then the output power ratio of continuous laser and pulse laser is controlled.Different demand effects such as continuous laser output, or pulse laser output, or continuous laser and pulse laser simultaneous output can be selectively realized, and the device is widely used in laser processing field.The device is compact in structure, easy to operate and low in overall cost.

Description

Technical Field

[0001] This invention relates to the field of laser technology. More specifically, it relates to a solid-state laser device that is hybrid-pumped by an LD and a flash lamp. Background Technology

[0002] Laser processing is a high-precision and high-efficiency processing method that is widely used in industrial production and scientific research. Solid-state lasers are lasers based on solid-state gain media, possessing advantages such as high power, high efficiency, and high beam quality, and are widely used in the field of laser processing.

[0003] Currently, commonly used solid-state lasers primarily employ continuous-wave pumping, which involves continuously exciting the gain medium with a continuous-wave source to achieve continuous laser output. Continuous-wave lasers are characterized by stable power and uniform energy distribution, making them suitable for continuous material processing. For example, using a flash lamp or continuous-wave laser to provide energy to excite the laser gain medium results in a continuous laser output, suitable for applications requiring stable output, such as laser printing, laser cutting, laser welding, and laser surface treatment.

[0004] However, continuous lasers have limitations in certain applications, such as micro-cutting, micro-hole machining, and laser engraving, which require pulsed lasers for high-precision material processing. Pulsed lasers, with their high energy concentration, short pulse width, and high peak power, are suitable for high-precision machining tasks.

[0005] In some laser processing applications, combining continuous lasers and pulsed lasers is necessary to achieve optimal results. For example, in laser cutting and drilling, continuous lasers are used for rapid cutting and drilling, while pulsed lasers are used to create holes and fine structures in the material; in laser welding, continuous lasers are used for high-speed welding, while pulsed lasers are used for fine welding and controlling the welding depth; in laser surface treatment, continuous lasers are used for surface melting and smelting, while pulsed lasers are used for surface modification and texture creation, etc.

[0006] To achieve the above-mentioned technical effects, the existing technology requires the use of two laser devices, a continuous laser and a pulsed laser, to achieve the simultaneous output and use of continuous laser and pulsed laser. This method occupies a large space, is inconvenient to operate, and has a high overall cost.

[0007] Therefore, an integration method is needed to integrate continuous lasers and pulsed lasers into the same device. By controlling the optical elements within the device, different effects can be achieved, such as continuous laser output, pulsed laser output, or simultaneous output of continuous lasers and pulsed lasers. Summary of the Invention

[0008] The purpose of this invention is to provide a solid-state laser device pumped by a hybrid LD and flash lamp that is compact in structure and capable of controlling the ratio of continuous laser output to pulsed laser output, thereby solving at least one of the problems existing in the prior art.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] The first aspect of the present invention provides a solid-state laser device pumped by a hybrid LD and flash lamp, comprising: at least one flash lamp, at least one LD laser, two anti-reflection devices, a laser gain medium, a total reflection mirror, an output mirror, and a power control device;

[0011] The flash lamp is used to generate and output continuous pump light so that the continuous pump light side-pumps the laser gain medium.

[0012] The LD laser is used to generate and output pulsed pump light, which, after being reflected or transmitted by the anti-reflection device, pumps the laser gain medium at the end face.

[0013] The laser gain medium is used to generate and output a first laser according to the side pump and the end pump;

[0014] The anti-reflection device is also used to enhance the anti-reflection of the first laser output by the laser gain medium, the first laser reflected by the total reflection mirror, and the first laser reflected by the output mirror when reflecting the pulse pump light output by the LD laser; or, when enhancing the anti-reflection of the pulse pump light output by the LD laser, to reflect the first laser output by the laser gain medium, the first laser reflected by the total reflection mirror, and the first laser reflected by the output mirror.

[0015] The output mirror is also used to transmit a portion of the first laser beam;

[0016] The power regulation device is used to control the pump power of the flash lamp and the LD laser, respectively.

[0017] Furthermore, the first laser includes continuous laser and pulsed laser.

[0018] Furthermore, the power control device is used to control the pump power of the flash lamp to control the power of the continuous laser output by the laser gain medium, and also to control the pump power of the LD laser to control the power of the pulsed laser output by the laser gain medium; so that the laser gain medium outputs continuous laser, or outputs pulsed laser, or simultaneously outputs continuous laser and pulsed laser.

[0019] Furthermore, the side of the laser gain medium is coated with a high-transmittance film for enhancing the transmission of continuous pump light.

[0020] Furthermore, the shape of the laser gain medium includes, but is not limited to, slabs and rods.

[0021] Furthermore, the laser gain medium is in the shape of a slab, and the anti-reflective device includes a high-transmittance film and a high-reflection film; the high-transmittance film and the high-reflection film are respectively deposited on the two end faces of the laser gain medium.

[0022] Furthermore, the laser gain medium is rod-shaped, and the antireflective device includes a mirror body, a high-reflectivity film, and a high-transmittance film. The high-transmittance film is deposited on both sides of the mirror body, and the high-reflectivity film is deposited on the side of the mirror body closest to the laser gain medium.

[0023] Furthermore, the anti-reflective device also includes a mounting bracket for fixing the lens body.

[0024] Furthermore, the anti-reflection device is used to enhance the anti-reflection of the first laser output from the laser gain medium, the first laser reflected by the total reflection mirror, and the first laser reflected by the output mirror when reflecting the pulsed pump light output from the LD laser; the high-reflection film is a pulsed pump light high-reflection film, used to reflect the pulsed pump light reflected by the LD laser so that the pulsed pump light performs end-face pumping on the laser gain medium.

[0025] The high-transmittance film is a laser high-transmittance film, used to increase the transmittance of the first laser output by the laser gain medium, the first laser reflected by the total reflection mirror, and the first laser reflected by the output mirror, so that the first laser reflected by the total reflection mirror and the first laser reflected by the output mirror are transmitted to the end face of the laser gain medium, and the first laser output by the laser gain medium is transmitted to the total reflection mirror and the output mirror.

[0026] Furthermore, the anti-reflection device is used to reflect the first laser output from the laser gain medium, the first laser reflected by the total reflection mirror, and the first laser reflected by the output mirror when anti-reflecting the pulse pump light output from the LD laser; the high-reflection film is a laser high-reflection film, used to reflect the first laser output from the laser gain medium, the first laser reflected by the total reflection mirror, and the first laser reflected by the output mirror, so that the first laser reflected by the total reflection mirror and the first laser reflected by the output mirror are reflected to the end face of the laser gain medium, and the first laser output from the laser gain medium is reflected to the total reflection mirror and the output mirror;

[0027] The high-transmittance film is a pulse pump light high-transmittance film, used to increase the transmittance of the pulse pump light output by the LD laser transmitted to the pulse pump light high-transmittance film, so that the pulse pump light can perform end-face pumping of the laser gain medium.

[0028] The beneficial effects of this invention are as follows:

[0029] This invention utilizes a flash lamp and an LD laser to hybrid pump the laser gain medium, enabling the laser gain medium to simultaneously output continuous laser and pulsed laser. The pump power of the flash lamp and the LD laser is controlled by a power regulation device, thereby controlling the output power ratio of the continuous laser and the pulsed laser.

[0030] By controlling the power regulation device to set the flash lamp pump power to 0 and the LD laser pump power to be greater than 0, the laser gain medium will only generate pulsed laser, which is suitable for high-precision processing applications such as micro-machining and fine engraving of workpieces.

[0031] By controlling the power regulation device to make the flash lamp pump power greater than 0 and the LD laser pump power equal to 0, the laser gain medium will only produce continuous laser light, which is suitable for large-area continuous processing applications such as rapid processing and welding of workpieces.

[0032] By controlling the power regulation device to make the flash lamp pump power greater than 0 and the LD laser pump power greater than 0, the laser gain medium can simultaneously output continuous laser and pulsed laser, which is suitable for various processing needs.

[0033] The device of this invention can flexibly switch output modes according to different processing needs, thereby improving processing efficiency and accuracy and reducing equipment costs. Attached Figure Description

[0034] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0035] Figure 1 This invention illustrates a solid-state laser device provided by an embodiment of the present invention, in which the laser gain medium is shaped as a slab, the high reflectivity film is a pulse pump light high reflectivity film, and the high transmittance film is a laser high transmittance film, and the flash lamp and LD laser are mixed-pumped.

[0036] Figure 2 This invention illustrates a solid-state laser device provided by an embodiment of the present invention, in which the laser gain medium is shaped as a slab, the high reflectivity film is a laser high reflectivity film, and the high transmittance film is a pulse pump light high transmittance film, and the flash lamp and LD laser are mixed-pumped.

[0037] Figure 3 This invention illustrates a solid-state laser device provided by an embodiment of the present invention, in which the laser gain medium is rod-shaped, the high-reflectivity film is a laser high-reflectivity film, and the high-transmittance film is a pulse pump light high-transmittance film, and the flash lamp and LD laser are mixed-pumped.

[0038] Figure 4 This invention illustrates a solid-state laser device provided by an embodiment of the present invention, in which the laser gain medium is rod-shaped, the high reflectivity film is a pulse pump light high reflectivity film, and the high transmittance film is a laser high transmittance film, and the flash lamp and LD laser are mixed-pumped.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Laser gain medium; 2. Flash lamp; 3. LD laser; 4. Anti-reflective device; 5. Total reflection mirror; 6. Output mirror. Detailed Implementation

[0041] To more clearly illustrate the present invention, the following description, in conjunction with embodiments and accompanying drawings, further explains the invention. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of the present invention.

[0042] An embodiment of the present invention provides a solid-state laser device pumped by a hybrid LD and flash lamp, characterized in that it includes: at least one flash lamp 2, at least one LD laser 3, two anti-reflection devices 4, a laser gain medium 1, a total reflection mirror 5, an output mirror 6, and a power control device.

[0043] The flash lamp 2 is used to generate and output continuous pump light so that the continuous pump light side-pumps the laser gain medium 1.

[0044] The LD laser 3 is used to generate and output pulse pump light, which, after being reflected or transmitted by the anti-reflection device 4, pumps the laser gain medium 1 at the end face.

[0045] More specifically, the transmission refers to increasing the transmittance of incident light.

[0046] The laser gain medium 1 is used to generate and output a first laser according to the side pump and the end pump;

[0047] The anti-reflection device 4 is also used to enhance the reflection of the first laser output from the laser gain medium 1, the first laser reflected by the total reflection mirror 5, and the first laser reflected by the output mirror 6 when reflecting the pulse pump light output from the LD laser 3; or, when enhancing the reflection of the pulse pump light output from the LD laser 3, to reflect the first laser output from the laser gain medium 1, the first laser reflected by the total reflection mirror 5, and the first laser reflected by the output mirror 6.

[0048] The output mirror 6 is also used to transmit part of the first laser beam;

[0049] The first laser includes continuous laser and pulsed laser.

[0050] The power regulation device is used to control the pump power of the flash lamp 2 and the LD laser 3 respectively.

[0051] More specifically, the power control device is used to control the pump power of the flash lamp 2 to control the power of the continuous laser output by the laser gain medium 1, and also to control the pump power of the LD laser 3 to control the power of the pulsed laser output by the laser gain medium 1; so that the laser gain medium 1 outputs continuous laser, or outputs pulsed laser, or simultaneously outputs continuous laser and pulsed laser.

[0052] The laser gain medium 1 described in this invention is a gain material capable of generating laser light of any size, including but not limited to materials such as crystals and ceramics, and is not limited to shapes such as slabs and rods. The LD laser 3 is a semiconductor laser that emits light in a pulsed mode to pump the laser gain medium 1. The flash lamp 2 excites a xenon tube through periodic changes in current or voltage, causing it to continuously discharge and generate continuous light to pump the laser gain medium 1.

[0053] The power control device is electrically connected to the flash lamp 2 and the LD laser 3 respectively.

[0054] This invention uses a flash lamp 2 and an LD laser 3 to perform mixed pumping on the laser gain medium 1, so that the laser gain medium can output continuous laser and pulsed laser simultaneously. The pumping power of the flash lamp 2 and the LD laser 3 is controlled by a power regulation device, thereby controlling the output power ratio of continuous laser and pulsed laser.

[0055] By controlling the power regulation device to make the pump power of the flash lamp 2 0 and the pump power of the LD laser 3 greater than 0, the laser gain medium 1 will only generate pulsed laser, which is suitable for high-precision processing such as micro-machining and fine engraving of workpieces.

[0056] By controlling the power regulation device to make the pump power of the flash lamp 2 greater than 0 and the pump power of the LD laser 3 equal to 0, the laser gain medium 1 will only produce continuous laser at this time, which is suitable for large-area continuous processing occasions such as rapid processing and welding of workpieces.

[0057] By controlling the power regulation device to make the pump power of the flash lamp 2 greater than 0 and the pump power of the LD laser 3 greater than 0, the laser gain medium 1 can simultaneously output continuous laser and pulsed laser, which is suitable for various processing needs. The output mode can be flexibly switched according to different processing needs to improve processing efficiency and accuracy.

[0058] In one possible implementation, the laser gain medium 1 is coated with a high-transmittance film for continuous pump light to enhance the transmission of continuous pump light.

[0059] The present invention enables the laser gain medium 1 to receive not only the pump of the LD laser 3 at both ends, but also the first laser reflected by the total reflection mirror 5 or the output mirror 6 through the anti-reflection device 4, so that the laser is reflected multiple times in the total reflection mirror 5 or the output mirror 6 and then output as laser.

[0060] In one possible implementation, the shape of the laser gain medium 1 includes, but is not limited to, slabs and rods.

[0061] In one possible implementation, the laser gain medium 1 is in the shape of a slab, and the anti-reflective device 4 includes a high-transmittance film and a high-reflection film; the high-transmittance film and the high-reflection film are respectively deposited on the two end faces of the laser gain medium 1.

[0062] In one possible implementation, the laser gain medium 1 is rod-shaped, and the antireflective device 4 includes a mirror body, a high-reflectivity film, and a high-transmittance film. The high-transmittance film is deposited on both sides of the mirror body, and the high-reflectivity film is deposited on the side of the mirror body closest to the laser gain medium 1.

[0063] The anti-reflective device 4 also includes a mounting bracket for fixing the mirror body.

[0064] In one possible implementation, the anti-reflection device 4 is used to enhance the anti-reflection of the first laser output from the laser gain medium 1, the first laser reflected by the total reflection mirror 5, and the first laser reflected by the output mirror 6 when reflecting the pulsed pump light output from the LD laser 3; the high-reflection film is a pulsed pump light high-reflection film, used to reflect the pulsed pump light reflected by the LD laser 3 so that the pulsed pump light performs end-face pumping on the laser gain medium 1;

[0065] The high-transmittance film is a laser high-transmittance film, used to increase the transmittance of the first laser output from the laser gain medium 1, the first laser reflected by the total reflection mirror 5, and the first laser reflected by the output mirror 6, so that the first laser reflected by the total reflection mirror 5 and the first laser reflected by the output mirror 6 are transmitted to the end face of the laser gain medium 1, and the first laser output from the laser gain medium 1 is transmitted to the total reflection mirror 5 and the output mirror 6.

[0066] In one possible implementation, the anti-reflection device 4 is used to reflect the first laser output from the laser gain medium 1, the first laser reflected by the total reflection mirror 5, and the first laser reflected by the output mirror 6 when anti-reflecting the pulse pump light output from the LD laser 3; the high-reflection film is a laser high-reflection film, used to reflect the first laser output from the laser gain medium 1, the first laser reflected by the total reflection mirror 5, and the first laser reflected by the output mirror 6, so that the first laser reflected by the total reflection mirror 5 and the first laser reflected by the output mirror 6 are reflected to the end face of the laser gain medium 1, and the first laser output from the laser gain medium 1 is reflected to the total reflection mirror 5 and the output mirror 6;

[0067] The high-transmittance film is a pulse pump light high-transmittance film, used to increase the transmittance of the pulse pump light output by the LD laser 3 transmitted to the pulse pump light high-transmittance film, so that the pulse pump light can perform end-face pumping on the laser gain medium 1.

[0068] In one possible implementation, the total reflection mirror and the output mirror may be respectively a concave spherical mirror or a plane mirror.

[0069] In one possible implementation, such as Figure 1 and Figure 2 As shown, when the laser gain medium 1 is in the shape of a slab, the anti-reflective device 4 includes a high-transmittance film and a high-reflection film; the high-transmittance film and the high-reflection film are respectively deposited on the two end surfaces of the laser gain medium 1.

[0070] This device can be implemented in the following two ways:

[0071] Method 1 as follows Figure 1 As shown, in this embodiment, the high-reflectivity film is a pulse pump light high-reflectivity film, which is used to reflect the pulse pump light reflected by the LD laser 3 so that the pulse pump light performs end-face pumping on the laser gain medium 1.

[0072] The high-transmittance film is a laser high-transmittance film, used to increase the transmittance of the first laser output from the laser gain medium 1, the first laser reflected by the total reflection mirror 5, and the first laser reflected by the output mirror 6, so that the first laser reflected by the total reflection mirror 5 and the first laser reflected by the output mirror 6 are transmitted to the end face of the laser gain medium 1, and the first laser output from the laser gain medium 1 is transmitted to the total reflection mirror 5 and the output mirror 6.

[0073] Method 2, as Figure 2 As shown, in this embodiment, the high-reflectivity film is a laser high-reflectivity film, which is used to reflect the first laser output from the laser gain medium 1, the first laser reflected by the total reflection mirror 5, and the first laser reflected by the output mirror 6, so that the first laser reflected by the total reflection mirror 5 and the first laser reflected by the output mirror 6 are reflected to the end face of the laser gain medium 1, and the first laser output from the laser gain medium 1 is reflected to the total reflection mirror 5 and the output mirror 6.

[0074] The high-transmittance film is a pulse pump light high-transmittance film, used to increase the transmittance of the pulse pump light output by the LD laser 3 transmitted to the pulse pump light high-transmittance film, so that the pulse pump light can perform end-face pumping on the laser gain medium 1.

[0075] When the first laser generated by the laser gain medium 1 is reflected multiple times within the laser gain medium 1 and emitted from the end face of the laser gain medium, the emitted first laser will exhibit a refraction phenomenon. The optical path of the first laser is difficult to predict. Therefore, it is necessary to adjust the positions of the LD laser 3, the anti-reflection device 4, the total reflection mirror 5, and the output mirror 6 according to the optical path. Although the adjustment process in this embodiment is relatively complicated, the high reflectivity film and high transmittance film in the anti-reflection device 4 are coated on the laser gain medium, so there is no need to add devices such as reflectors.

[0076] In one possible implementation, the laser gain medium 1 is rod-shaped, such as... Figure 3 and Figure 4 As shown, the laser gain medium 1 is rod-shaped, and the anti-reflective device 4 includes a mirror body, a high-reflectivity film, and a high-transmittance film. The high-transmittance film is coated on both sides of the mirror body, and the high-reflectivity film is coated on the side of the mirror body closest to the laser gain medium 1.

[0077] This device can be implemented in the following two ways:

[0078] Method 1 as follows Figure 3 As shown, in this embodiment, the high-reflectivity film is a laser high-reflectivity film, which is used to reflect the first laser output from the laser gain medium 1, the first laser reflected by the total reflection mirror 5, and the first laser reflected by the output mirror 6, so that the first laser reflected by the total reflection mirror 5 and the first laser reflected by the output mirror 6 are reflected to the end face of the laser gain medium 1, and the first laser output from the laser gain medium 1 is reflected to the total reflection mirror 5 and the output mirror 6.

[0079] The high-transmittance film is a pulse pump light high-transmittance film, used to increase the transmittance of the pulse pump light output by the LD laser 3 transmitted to the pulse pump light high-transmittance film, so that the pulse pump light can perform end-face pumping on the laser gain medium 1.

[0080] Method 2, as Figure 4 As shown, in this embodiment, the high-reflectivity film is a pulse pump light high-reflectivity film, which is used to reflect the pulse pump light reflected by the LD laser 3 so that the pulse pump light performs end-face pumping on the laser gain medium 1.

[0081] The high-transmittance film is a laser high-transmittance film, used to increase the transmittance of the first laser output from the laser gain medium 1, the first laser reflected by the total reflection mirror 5, and the first laser reflected by the output mirror 6, so that the first laser reflected by the total reflection mirror 5 and the first laser reflected by the output mirror 6 are transmitted to the end face of the laser gain medium 1, and the first laser output from the laser gain medium 1 is transmitted to the total reflection mirror 5 and the output mirror 6.

[0082] In this embodiment, the first laser is perpendicular to both ends of the laser gain medium 1. The optical path of the first laser can be predicted, so the positions of the LD laser 3, anti-reflection device 4, total reflection mirror 5, and output mirror 6 can be set directly according to the predicted optical path. The setting process is simple, but the mirror body in the anti-reflection device 4 needs to be set separately.

[0083] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0084] It should also be noted that in the description of this invention, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0085] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A solid-state laser device pumped by a hybrid LD and flash lamp, characterized in that, include: At least one flash lamp (2), at least one LD laser (3), two anti-reflection devices (4), laser gain medium (1), total reflection mirror (5), output mirror (6), and power control device; The flash lamp (2) is used to generate and output continuous pump light so that the continuous pump light side-pumps the laser gain medium (1). The LD laser (3) is used to generate and output pulse pump light, which, after being reflected or transmitted by the anti-reflection device (4), pumps the laser gain medium (1) at the end face. The laser gain medium (1) is used to generate and output a first laser according to the side pump and the end pump; The anti-reflection device (4) is also used to enhance the reflection of the first laser output from the laser gain medium (1), the first laser reflected by the total reflection mirror (5), and the first laser reflected by the output mirror (6) when reflecting the pulse pump light output from the LD laser (3); or, when enhancing the reflection of the pulse pump light output from the LD laser (3), to reflect the first laser output from the laser gain medium (1), the first laser reflected by the total reflection mirror (5), and the first laser reflected by the output mirror (6); The output mirror (6) is also used to transmit part of the first laser beam; The power regulation device is used to control the pump power of the flash lamp (2) and the LD laser (3) respectively; The laser gain medium (1) is in the shape of a strip, and the anti-reflective device (4) includes a high-transmittance film and a high-reflection film; the high-transmittance film and the high-reflection film are respectively coated on the two end faces of the laser gain medium (1); or, the laser gain medium (1) is in the shape of a rod, and the anti-reflective device (4) includes a mirror body, a high-reflection film and a high-transmittance film, the high-transmittance film is coated on both sides of the mirror body, and the high-reflection film is coated on the side of the mirror body near the laser gain medium (1); The anti-reflection device (4) is used to enhance the reflection of the first laser output from the laser gain medium (1), the first laser reflected by the total reflection mirror (5), and the first laser reflected by the output mirror (6) when reflecting the pulse pump light output from the LD laser (3); the high reflectivity film is a pulse pump light high reflectivity film, used to reflect the pulse pump light reflected by the LD laser (3) so that the pulse pump light can perform end-face pumping on the laser gain medium (1); The high-transmittance film is a laser high-transmittance film, used to increase the transmittance of the first laser output from the laser gain medium (1), the first laser reflected by the total reflection mirror (5), and the first laser reflected by the output mirror (6) transmitted to the laser high-transmittance film, so that the first laser reflected by the total reflection mirror (5) and the first laser reflected by the output mirror (6) are transmitted to the end face of the laser gain medium (1), and the first laser output from the laser gain medium (1) is transmitted to the total reflection mirror (5) and the output mirror (6); or, the anti-reflection device (4) is used to, when anti-reflection of the pulse pump light output from the LD laser (3), reflect the first laser output from the laser gain medium (1), the first laser reflected by the total reflection mirror (5), and the first laser reflected by the output mirror (6) are transmitted to the end face of the laser gain medium (1); The first laser emitted is reflected; the high-reflection film is a laser high-reflection film, used to reflect the first laser output from the laser gain medium (1), the first laser reflected by the total reflection mirror (5) and the first laser reflected by the output mirror (6), so that the first laser reflected by the total reflection mirror (5) and the first laser reflected by the output mirror (6) are reflected to the end face of the laser gain medium (1), and the first laser output from the laser gain medium (1) is reflected to the total reflection mirror (5) and the output mirror (6); the high-transmittance film is a pulse pump light high-transmittance film, used to increase the transmittance of the pulse pump light output by the LD laser (3) transmitted to the pulse pump light high-transmittance film, so that the pulse pump light pumps the laser gain medium (1) at the end face.

2. The apparatus according to claim 1, characterized in that, The first laser includes continuous laser and pulsed laser.

3. The apparatus according to claim 2, characterized in that, The power control device is used to control the pump power of the flash lamp (2) to control the power of the continuous laser output by the laser gain medium (1), and also to control the pump power of the LD laser (3) to control the power of the pulsed laser output by the laser gain medium (1); so that the laser gain medium (1) outputs continuous laser, or outputs pulsed laser, or simultaneously outputs continuous laser and pulsed laser.

4. The apparatus according to claim 1, characterized in that, When the laser gain medium (1) is rod-shaped, the anti-reflective device (4) also includes a fixing frame for fixing the mirror body.

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