68 results about "Solid-state laser" patented technology

In an LD-pumped solid-state laser, where a solid-state laser crystal is excited by excitation light emitted from an LD to cause laser oscillation, and the resulting laser oscillation light of two frequencies is converted into a sum frequency, stable operation and cost reduction are achieved. [Solution] In an LD-pumped solid laser 1 comprising a solid laser crystal 19, an LD 11 that emits excitation light to excite the solid laser crystal 19, a resonator that resonates the light emitted from the solid laser crystal 19, and an optical wavelength conversion element 22 that converts the wavelength of solid laser oscillation light L21 and L22, a multiplexing means 21 is provided that receives the two solid laser oscillation light L21 and L22 from different directions and combines them into one, and the optical wavelength conversion element 22 converts the combined solid laser oscillation light L21 and L22 into a sum frequency.

The invention relates to the technical field of laser devices, and discloses a multi-bar series connection assembly and a pumping solid laser, the multi-bar series connection assembly comprises a plurality of bar modules which are arranged, two adjacent bar modules are arranged at intervals, and a bent and deformable metal foil is connected between two adjacent bar modules. And the two adjacent bar modules realize positive and negative electrode conduction through the metal foil connected between the two bar modules. By means of the mode, thermal stress in the multi-bar series connection assembly can be effectively released, the problem of laser bar cracking caused by hard connection adopted by a traditional structure is solved, the structural reliability and stability of the multi-bar series connection assembly are improved, and the service life of the multi-bar series connection assembly is prolonged.

The utility model provides a solid laser crystal heat sink structure, which relates to the field of laser crystal heat dissipation and comprises a first shell and a second shell combined with the first shell to form an accommodating space, a TEC semiconductor cooler and a pipeline are arranged in the accommodating space, a gap is reserved between the pipeline and the TEC semiconductor cooler, and the gap is filled with heat-conducting silica gel. The device further comprises a third shell arranged in the TEC semiconductor refrigerator, a laser crystal is arranged in the third shell, the laser crystal and the third shell form an interlayer, and an indium layer is arranged in the interlayer. According to the utility model, the TEC semiconductor cooler can accurately control the temperature of each part of the laser crystal, so that the heat dissipation capability of each part is matched with the heat distribution of the laser crystal.

The invention relates to the technical field of solid lasers, and particularly provides a narrow-linewidth tunable dual-wavelength laser output system based on data driving, which comprises a pumping source, a resonant cavity, a data acquisition unit and a data receiving and driving device, a single gain medium, two F-P etalon and an F-P angle regulator are arranged in the resonant cavity, the inclination angles of the two F-P etalon are adjusted through an F-P angle adjuster so as to perform longitudinal mode selection and wavelength tuning on the output laser of the resonant cavity; a neural network screening model is arranged in the data receiving and driving device, the neural network screening model is used for learning the mapping relation between intracavity parameters and output laser optical parameters, and dual-wavelength simultaneous locking and line width prediction are achieved through dual-etalon collaborative mode selection and data driving of the neural network screening model. According to the invention, the complexity of the system is greatly simplified, and dual-wavelength, narrow-linewidth, high-stability, repeatable and automatic laser output regulation and control which cannot be achieved by a traditional architecture are realized functionally.

The invention discloses a system and a method for lossless dynamic measurement of microstructure characteristics of a material surface, and relates to the technical field of optical measurement, and the method comprises the following steps: S1, placing an object to be measured on a two-dimensional stepping motor platform, and adjusting the platform to be horizontal; and starting the solid laser. According to the invention, an optical system composed of a solid laser, a beam expander, an aperture diaphragm and a spectroscope generates an accurate detection light beam, a spatial filter designed according to a confocal diffraction limit is matched to effectively suppress defocus stray light interference, and a multi-parameter fusion judgment mechanism is combined to synchronously extract a light intensity peak value and a light spot centroid offset, so that the detection accuracy is improved. The focus is judged only when the light intensity reaches the maximum value and the mass center offset is smaller than the threshold value, the positioning precision is greatly improved, Z-axis coordinate errors are dynamically corrected through real-time vibration compensation and thermal drift compensation, the problems of sample damage and optical method noise interference in traditional contact measurement are solved, and undistorted data support is provided for microstructure three-dimensional reconstruction.

The application discloses a kind of hollow light beam coherent array solid-state lasers, it is related to the technical field of laser, wherein, microstructure sheet and microstructure output layer adopt bonding mode connection;Array of hollow light field modulation structure is formed on microstructure sheet, pump source is used to emit pumping light, pump source and optical coupling system are relatively microstructure sheet and are matched to be set, so that pumping light can be coupled into microstructure sheet by optical coupling system, and hollow light beam array is formed by hollow light field modulation structure array;Hollow light beam array enters microstructure output layer by microstructure sheet, and forms coherent coupling and injection phase-locked in microstructure output layer, and outputs hollow light beam coherent array laser.Through the technical scheme of the application, high-power hollow light beam coherent array laser output can be obtained, and hollow light beam regulation is easy to realize, the scope of application is wide, and scalability is strong, and simple structure, low in cost, high in efficiency.

This invention provides an intelligent adjustment device and method for an Er-doped solid-state laser, comprising a four-mirror cavity laser resonator consisting of a pump source, a collimating mirror, a focusing mirror, an input end mirror, an Er-doped laser crystal, an end mirror, an output coupling mirror, and a high-reflectivity mirror; and an automatic control system consisting of a PC information processing module, a visible light probe detection module, a feedback control module including a cavity mirror control rail and an angle controller, and an infrared optical power meter. The visible light probe detects the intensity change of the upconversion light from the Er-doped laser crystal in real time, which is verified by the infrared optical power meter. The PC module controls the feedback module to adjust the cavity mirror distance and angle to achieve closed-loop control. This invention utilizes optical characteristics to replace detection and intelligent closed-loop control, solving the problems of high cost and slow response of traditional 3-micron lasers, achieving low-cost, high-response automated cavity mirror control, and possessing advantages such as cost savings, fast response, and strong fault tolerance.

The invention relates to the technical field of solid-state lasers, in particular to a side pumping device for a solid-state laser and the solid-state laser. A side pumping device for a solid-state laser includes: a laser crystal rod; the pump radiation sources are arranged on the side wall of the laser crystal rod at intervals, and the pump radiation sources are configured to provide pump light; the optical substrate is arranged between the laser crystal rod and the pumping radiation source; the optical substrate comprises a first surface and a second surface, the first surface is arranged corresponding to the pumping radiation source, and the second surface is arranged corresponding to the laser crystal bar; the first surface is provided with a first metasurface structure, and the second surface is provided with a second metasurface structure; the first metasurface structure is configured to enable the pump light to be vertically incident into the optical substrate; the end, away from the optical substrate, of the second metasurface structure abuts against the laser crystal rod and is configured to change the deflection angle of the pump light to a target deflection angle. The target deflection angle is larger than a total internal reflection critical angle of the laser crystal rod and an external environment interface.

The utility model provides a chromium-doped gain medium solid laser based on thulium solid laser pumping. Comprising a pumping source, a pumping light coupling device, a first laser lens, a thulium-doped laser gain medium, a first laser coupling output lens, a light coupling device, a second laser lens, a chromium-doped laser gain medium and a second laser coupling output lens which are arranged in sequence, the thulium-doped laser gain medium is a thulium-doped solid gain medium; the chromium-doped laser gain medium is a chromium-doped solid gain medium; a first oscillation cavity of laser is constructed between the first laser lens and the first laser coupling output lens; and a second oscillation cavity of the laser is constructed between the second laser lens and the second laser coupling output lens, and is used for wavelength selection to realize the output of the laser at the wave band of 1.9-3 microns. According to the utility model, the thulium-doped solid laser is used as a pumping source for pumping the chromium-doped crystal, so that the problem that the chromium-doped crystal is low in pumping efficiency and output power under other pumping sources such as an optical fiber laser is solved.

The utility model discloses a novel watt-level solid laser core, which relates to the field of watt-level solid laser cores and comprises a yttrium aluminum garnet doped crystal and a yttrium aluminum garnet crystal which are connected with each other. The number of the doped yttrium aluminum garnet crystal and the yttrium aluminum garnet crystal is one or more; according to the novel watt-level solid laser core, the cost can be greatly saved through a microchip cutting process, the requirement that the light spot diameter is matched with the separation cavity is met by adjusting the cavity length of the core cavity, watt-level pumping power is achieved, and miniaturization is easy.

The invention relates to the technical field of optical fiber solid lasers, and discloses a red and green light composite laser suitable for multifunctional 3D printing. The laser is integrated with a semiconductor / optical fiber pump light source, a nonlinear frequency conversion device comprising an infrared focus lens and a non-critical phase matching crystal, a light beam separation and synthesis device with a collimating lens and a wave plate motor driving half-wave plate, a pump light garbage can, a temperature control device, an integrated control unit and a double-core / multi-core transmission optical fiber. Through temperature control and frequency stabilization, polarization beam combination, residual light absorption and multi-parameter cooperative regulation and control, and by matching with a multi-material adaptation algorithm, coaxial composite output of red light and green light is realized. The defects that traditional single-wavelength laser is difficult to adapt to multiple materials, an existing composite scheme is inflexible in power adjustment, low in coaxiality and the like are overcome, the machining mode is dynamically adjusted for high-reflectivity and conventional materials, multi-material, high-precision and high-efficiency additive manufacturing is achieved, and the method is suitable for the fields of aerospace, electronic devices and the like.

The invention relates to the technical field of solid lasers, in particular to a pumping device and a solid laser. The pumping device comprises a laser crystal; the flow guide tube is a hollow cylindrical tube, and the laser crystal is arranged in the flow guide tube; the metasurface lens group is arranged on the outer side wall of the flow guide pipe; the output end of the laser diode array is arranged corresponding to the metasurface lens group; wherein the metasurface lens group is configured to collimate the divergence angle of the output light of the laser diode array. Therefore, the collimation of the output light of the laser diode array can be realized through the metasurface lens group arranged on the flow guide tube, so that the output light can enter the flow guide tube at a vertical angle and then enter the laser crystal, and the pumping of the laser crystal is realized. After being collimated by the metasurface lens group, light emitted by the laser diode is converted into parallel light which is uniformly distributed, so that uniform pumping of the gain medium is realized, and the influence of local heat accumulation on the quality of an emergent light beam is effectively avoided.

The utility model relates to the technical field of laser testing equipment, and discloses a lath crystal side pump uniformity testing device, which comprises a seed light source, a small hole diaphragm, an Nd: YAG lath crystal, a focus lens, a 45-degree reflection attenuation sheet and a light beam analyzer which are sequentially arranged along the direction of a light path, an LD pumping module is arranged above the Nd: YAG lath crystal, and the light beam analyzer is arranged above the Nd: YAG lath crystal. A crystal heat sink is arranged below the Nd: YAG lath crystal, and the crystal heat sink is connected with the bottom of the Nd: YAG lath crystal; the device provided by the utility model is suitable for the uniformity test of the whole lath crystal in a large-mode-volume unstable-cavity solid laser, and the reliability and stability of the uniformity test are effectively improved.

The invention belongs to the technical field of solid laser pumping, and discloses a solid laser timing pumping device based on a mechanical delay device, which comprises a pumping source, a total reflective mirror, a crystal disc, an output mirror and a double-color filter which are sequentially arranged along the direction of a light path, a pumping light beam emitted by the pumping source sequentially passes through the total reflective mirror, the crystal disc and the output mirror, and the output laser passes through the double-color filter to realize the separation of the pumping light and the laser beam; the mechanical delay device drives the crystal disc to rotate intermittently, and when the pumping source emits light beams to irradiate the crystal disc in the resonant cavity, the crystal disc is in a stop state; after the irradiation of the crystal disc in the resonant cavity in the period is finished, the crystal disc enters a rotating state; and before the pumping source enters the next period of irradiation, the crystal disc in the resonant cavity is changed to the next pumping part, so that the periodic timing pumping of the solid laser is realized. The heat dissipation efficiency of the disc type solid laser is improved, and the influence of the crystal heat effect on the laser is reduced.

The invention discloses a multi-source single-output green light beacon laser for space application, which is characterized in that a light source part comprises two butterfly-shaped packaging laser devices which are cold backups for each other, the butterfly-shaped packaging laser devices are solid laser devices packaged in butterfly-shaped shells, each butterfly-shaped packaging laser device comprises a semiconductor pumping chip, a shaping optical fiber, a laser crystal Nd: YVO4 and a frequency doubling crystal PPLN, and green light of 532nm is generated; in the filtering and beam combining light path part, 532nm green light emitted by each light source is respectively provided with a half-wave plate for adjusting the polarization direction, is combined into the same light path through a polarization splitting prism, is filtered by a light filter, enters a multimode optical fiber through an optical fiber collimator, and is divided into two paths through an optical fiber coupler; one path is used for monitoring the output power and health state of the laser in real time, and the other path is used as main beacon light. The problem of performance reduction caused by the overheating phenomenon of the light-emitting unit is effectively solved, high-power output can be kept for a long time, and meanwhile the overall light weight and flexibility of the laser are considered.

The application belongs to the field of Raman laser, and particularly relates to a red-green-blue three primary color large pulse energy Raman laser, which comprises a pumping laser, a plano-convex lens A, a Raman cell and a plano-convex lens B, the pumping laser is a Nd:YAG pulse solid laser, a mixed gas of D2 and inert gas in the Raman cell is pumped by a doubled 532nm pulse laser, three times of focusing are carried out in the Raman cell, and finally first order Stokes red laser, first order anti-Stokes blue Raman laser and green pumping laser are simultaneously output, the pulse energy reaches above 140mJ, 50mJ and 140mJ respectively, and the peak power reaches 10MW level. The application has the advantages of simple structure, fast debugging, low cost and high peak power of output laser, and provides a Raman laser for generating red-green-blue three primary color laser with high cost performance and large pulse energy.

This invention relates to the field of solid-state laser technology, specifically providing a data-driven narrow-linewidth tunable dual-wavelength laser output system. The system includes a pump source, a resonant cavity, a data acquisition unit, and a data receiver and driver. The resonant cavity contains a single gain medium, two F-P etalons, and an F-P angle adjuster. The tilt angle of the two F-P etalons is adjusted by the F-P angle adjuster to perform longitudinal mode selection and wavelength tuning of the output laser. The data receiver and driver incorporate a neural network screening model. This model learns the mapping relationship between intracavity parameters and output laser optical parameters, utilizing the dual etalons for collaborative mode selection. The data-driven approach of the neural network screening model achieves simultaneous dual-wavelength locking and linewidth prediction. This invention significantly simplifies system complexity and functionally achieves dual-wavelength, narrow-linewidth, high-stability, repeatable, and automated laser output control, which is impossible with traditional architectures.

The present application relates to the technical field of laser devices, and discloses a multi-bar series assembly and a pumped solid-state laser. The multi-bar series assembly comprises a plurality of bar modules which are arranged. Two adjacent bar modules are spaced apart from each other, and a bent and deformable metal foil is connected between the two adjacent bar modules. Positive and negative electrodes of the two adjacent bar modules are electrically connected by means of the metal foil connected between the two adjacent bar modules. By means of the method, the present application allows for effective release of thermal stress in the multi-bar series assembly, eliminates the problem of laser bar cracking caused by use of a hard connection in a conventional structure, improves structural reliability and stability, and prolongs service life.

The invention provides a high-power pulse optical fiber laser range finder based on energy synthesis and a laser range finding method, and adopts the technical scheme of pre-amplification, beam splitting, multi-path power amplification and incoherent energy synthesis of single-path seed light to form a framework of combining main oscillation power amplification with multi-path parallel amplification and energy synthesis. The ultra-high energy pulse is output through the MOPA + SMC optical fiber laser beam splitting amplification technology, the bottleneck problem of single-path single-mode optical fiber energy output is solved, and the laser single pulse energy is remarkably improved. Compared with a solid laser, the all-fiber laser realizes all-fiber, high stability and high beam quality, is simpler in system structure, and synchronously improves three indexes including pulse energy, operating distance and repetition frequency of a laser range finder; the optical fiber laser range finder is widely applied to remote topographic mapping and three-dimensional modeling, ultra-long-distance industrial safety monitoring, ultra-long-distance sensing of next-generation automatic driving automobiles, power line patrol and the like, and the market competitiveness of the optical fiber laser range finder is greatly improved.

The application relates to the field of functional materials, in particular to a lead-free bismuth-based photo-functional crystal material, a preparation method and application. The structural formula of the lead-free bismuth-based photo-functional crystal material is (C6H 14 N)2BiBr5, the space group is P na21 , the cell parameters are as follows: a =12.799+ / -0.001 angstrom, b =22.161+ / -0.002 angstrom, c =7.859+ / -0.001 angstrom, a = b = g =90 degrees, Z =4, V =2229.07+ / -0.05 angstrom 3 . The application first obtains the lead-free bismuth-based photo-functional crystal material (C6H 14 N)2BiBr5 crystal, the crystal has good nonlinear optical performance, the powder frequency doubling strength is about 1.5 times of KDP, the frequency doubling laser output of an Nd:YAG (1064 nm) laser can be realized, the crystal has high thermal stability, and is expected to be applied to an infrared solid laser.

The invention belongs to the technical field of semiconductor laser pumping solid lasers, and discloses a semiconductor side pumping solid laser module based on a composite reflection light-gathering cavity, which comprises an LD bar (1) and a thin rod type laser working medium (3) arranged in the composite reflection light-gathering cavity (2), pump light emitted by a light-emitting point of the LD bar (1) is reflected by the oval inner wall of the upper half portion of the composite reflection light-gathering cavity (2) and then is totally gathered at the axis position of the thin rod type laser working medium (3), and residual pump light absorbed by the thin rod type laser working medium (3) reaches the semicircular inner wall of the lower half portion of the right side of the composite reflection light-gathering cavity (2). And the residual pump light energy is reflected back to the thin rod type laser working medium (3) by the original path, so that the residual pump light energy is absorbed again, and high-efficiency pumping is realized. According to the invention, pumping with extremely high geometrical optical efficiency is realized for a thin rod type laser working medium, and the utilization efficiency of pumping light energy is improved.

The application relates to the technical field of laser devices, and discloses a pumping assembly and a solid-state laser. The pumping assembly comprises a gain medium rod and a plurality of pumping sources, and the plurality of pumping sources are arranged in an axial and circumferential array of the gain medium rod. The plurality of pumping sources are configured to emit light towards the gain medium rod, wherein the plurality of pumping sources arranged in the circumferential direction and towards the same cross section of the gain medium rod are arranged at intervals, and the plurality of pumping sources arranged in the axial direction and in the same line are also arranged at intervals. The plurality of pumping sources arranged in the circumferential direction and towards the same cross section of the gain medium rod form a group of pumping sources, and the projections of the adjacent two groups of pumping sources on the same plane in the axial direction are arranged at intervals. All the pumping sources are connected in series to form at least one power supply circuit, and the pumping sources are used for emitting light towards the gain medium rod when powered on, so as to excite the gain medium rod to output laser. In the above manner, the application can alleviate the heating problem of the gain medium rod and the pumping sources on the basis of ensuring that the output laser has good uniformity.

The invention belongs to the field of solid-state lasers, and particularly discloses a Kerr lens mode-locked self-starting-based solid-state laser which comprises a laser generating unit used for generating laser and a mode-locked regulation and control unit arranged on a laser emergent light path. And the mode-locked regulation and control unit comprises a half-wave plate, a polaroid and a target reflector which are sequentially arranged along a preset light path, and is used for regulating and controlling the light intensity of the laser reflected back to the laser generation unit in a polarization state regulation mode and triggering the mode-locked state of the Kerr lens in a light disturbance mode. According to the invention, the Kerr lens mode locking state can be effectively triggered, a traditional mechanical disturbance mode is abandoned, all-optical active triggering is realized, and the operation convenience and long-term operation stability of the laser are greatly improved; in addition, a user can adjust the laser system to an optimal mode-locking trigger state, and the success rate and repeatability of mode-locking self-starting of the Kerr lens are remarkably improved.

The invention discloses a method and a device for calculating point changing time of a solid laser element. The device comprises a main control board, a power probe and a point changing execution mechanism, the method comprises the following steps: acquiring actual output power of a solid laser in real time by using a power probe and sending the actual output power to a main control board, and dynamically correcting accumulated working time of a working point of an optical element by the main control board according to an actual power value; and after the solid laser is started or runs for a specified time length every time, the main control board automatically selects and corrects the point position with the shortest accumulated working time, and controls the point switching execution mechanism to switch the point positions of the optical element, so that the solid laser can use the working point with the optimal state every time the solid laser is started. The problem that the working points are simply switched only according to the working time can be avoided, the point in the best state can be selected as the working point when the solid laser is used every time, the stability of the output state of the solid laser is improved, and therefore the better using effect is obtained.

The application belongs to the field of Raman laser, and particularly relates to a Herriot type multi-pass cell anti-Stokes Raman high peak power blue laser, which comprises a pumping laser, a plano-convex lens A, a Raman cell, a plano-convex lens B and a 45-degree angle dichroic mirror, the pumping laser is a Nd:YAG pulse solid laser, a 532nm pulse laser is used to pump a mixed gas of H2 and inert gas in the Raman cell, three times of focusing are carried out in the Raman cell, and finally a first order anti-Stokes Raman blue laser is output, the conversion efficiency of the first order anti-Stokes Raman blue laser can reach 10-15%, the pulse energy can be more than 50mJ, and the peak power reaches 10MW level. The application has the advantages of simple Raman laser structure, convenient and fast installation and adjustment, and provides a blue laser for generating high peak power blue laser with high cost performance, especially for the blue laser which is difficult to generate by a conventional method.

The utility model belongs to the technical field of laser crystals, and discloses a liquid-cooled laser crystal mounting support and a solid laser, the liquid-cooled laser crystal mounting support comprises a base and a pressing plate, the base is provided with a first limiting groove, the base is internally provided with a water inlet channel with a water inlet and a water outlet channel with a water outlet, and the pressing plate is provided with a second limiting groove. The water inlet channel and the water outlet channel penetrate through the top surface and the bottom surface of the base, and the water inlet and the water outlet are formed in the bottom surface of the base; the base is detachably connected with the pressing plate, a second limiting groove is formed in the pressing plate, and a water channel is formed in the pressing plate; the first limiting groove and the second limiting groove define a space used for containing the laser crystal, and the water inlet channel, the water channel and the water outlet channel are communicated to form a cooling loop arranged around the laser crystal. Therefore, the liquid-cooled laser crystal mounting support is compact in structure, shortens the heat transfer path, reduces the total thermal resistance in the heat transfer process, improves the heat conduction and heat dissipation efficiency, is convenient to process, and is favorable for reducing the cost.

This invention discloses a phonon-controlled laser de-icing device and method, belonging to the field of laser de-icing technology. The phonon-controlled laser de-icing device includes a phonon-controlled laser generation system and a dynamic scanning system. The phonon-controlled laser generation system generates a de-icing laser located at the absorption peak of ice and satisfying the wavelength requirement of the high-reflectance band of the target equipment's matrix material by controlling the electron-phonon coupling effect of the gain crystal of a solid-state laser. The dynamic scanning system scans the target equipment to obtain the ice layer state and controls the power of the solid-state laser based on the ice layer state. This invention achieves precise matching between the laser wavelength and the water absorption peak through phonon control technology, significantly improving the energy utilization efficiency of de-icing and effectively protecting the surface of the matrix material during the de-icing process, thereby improving the overall efficiency and accuracy of the de-icing operation.

The invention belongs to the technical field of solid lasers, and discloses a multi-thin-rod solid laser system based on pump light pipe wall reflection, a pump structure is arranged in a multilayer concentric circle structure, laser crystal thin rods are arranged on the central axis of an inner layer, and 90-degree rotating sheets are used between the laser crystal rods to eliminate thermally induced birefringence; placing a cylindrical cooling glass tube outside the laser crystal thin rod; the laser crystal thin rod is in direct contact with flowing cooling liquid; the outermost layer is a cylindrical tube plated with a high-reflection film; the pumping source is a pumping system composed of a plurality of semiconductor lasers and is incident from the end face of the cylindrical cavity in a divergent mode, and pumping light is reflected by the cylindrical pipe wall with the outer layer plated with a high-reflection film for multiple times, so that energy of the pumping light is absorbed by the laser medium thin rod for multiple times. Heat generated in the laser medium is taken away by the flowing cooling liquid, the high-power-density pump light can be borne, the laser beam quality is guaranteed, and high-power laser output can be obtained through multi-rod serial connection arrangement.

The application belongs to the field of solid-state lasers, and particularly relates to a high-power solid-state laser temperature control device, which comprises a shell, support columns fixedly connected to the four corners of the bottom end of the shell, a first connecting plate fixedly connected to the four corners of the top end of the shell, a top cover arranged at the bottom end of the shell, a second connecting plate fixedly connected to the four corners of the outside of the top cover, a screw rod penetrating through the inside of the first connecting plate and the second connecting plate, a bolt in threaded connection with the outside of the bottom end of the screw rod, a working device fixedly connected to the inside of the shell, and a fixing mechanism arranged in the inside of the shell. The fixing mechanism comprises a rotating groove arranged on the side, away from the working device, of the inside of the shell, screw rods rotatably connected to the two ends of the inside of the rotating groove, a rotating block arranged on the outside of the shell, the rotating block penetrating through one screw rod of the shell and being fixedly connected, a moving block in threaded connection with the outside of the screw rod, and a moving plate fixedly connected to the outside of the moving block.

Provided is an end-pumped solid-state laser, comprising: a picosecond seed source, a polarization isolation optical path, a pre-amplification optical path, a diffraction optical splitting optical path, and a multi-stage amplification optical path. The picosecond seed source is located at a first end of the end-pumped solid-state laser along a first direction. The polarization isolation optical path is coaxially arranged with the picosecond seed source along the first direction, and the polarization isolation optical path has a first port, a second port, and a third port: the first port is in communication with the picosecond seed source; the second port is in communication with the pre-amplification optical path; and the third port is in communication with the diffraction optical splitting optical path. The pre-amplification optical path is located on one side of the axis of the picosecond seed source and the polarization isolation optical path. The diffraction optical splitting optical path comprises an acousto-optic modulator, one end of the diffraction optical splitting optical path passes through the axis of the picosecond seed source and the polarization isolation optical path; and the other end of the diffraction optical splitting optical path is in communication with the multi-stage amplification optical path. The multi-stage amplification optical path is located on the side of the axis of the picosecond seed source and the polarization isolation optical path opposite to the pre-amplification optical path.