178 results about "Solid-state laser" patented technology

The invention provides an all-solid-state high-power single-frequency laser based on an optical fiber-slab mixed structure, and relates to the technical field of solid lasers, and the all-solid-state high-power single-frequency laser comprises an all-solid-state continuous single-frequency seed module, an optical fiber pulse modulation module, an optical fiber pre-amplification module, a slab laser pre-amplification module, a slab laser main amplification module and a frequency multiplication module which are sequentially arranged; the lath laser pre-amplifier and the lath laser main amplifier are used for compensating thermally induced aberration generated by lath laser through multi-pass amplification designed according to the spherical aberration self-compensation principle, and then the quality of light beams is improved. In addition, a discrete mirror group is adopted to replace a complete amplifier cavity mirror, spontaneous radiation and parasitic oscillation in the working process of the amplifier are effectively restrained, nearly hundred mJ-magnitude single-frequency pulse laser with excellent light beam quality can be obtained, and application to laser radar detection or industry can be met.

The invention relates to a self-optimization control method and system for a mode-locked state of a solid laser. Firstly, an initial data set containing at least one of pulse width, frequency, temperature and vibration data is obtained, then the initial data set is preprocessed, and a mode locking stability feature set is extracted from the initial data set. And then, inputting data in the mode locking stability feature set into a support vector machine model so as to obtain a mode locking strength predicted value. And then, calculating a deviation value between the mode locking strength predicted value and the real-time data, generating an optimization decision value by using Kalman filtering, and if the deviation between the optimization decision value and the real-time data exceeds a preset threshold value, adjusting operation parameters. And finally, inputting the adjusted operation parameters into a mapping relation model optimized by using a gradient descent algorithm, and further generating a dynamic power configuration scheme. According to the method, the stability and automatic regulation and control of the mode locking state are realized, the efficient utilization of resources is realized, and the performance and adaptability of the solid laser are greatly improved.

The invention belongs to the field of solid lasers, and particularly relates to a laser for realizing high-power pump beam quality enhancement based on multi-stack heat transfer, which comprises a pump module, a pump shaping coupling module, a multi-stack crystal, a cube-corner prism, an output mirror and a cooling device. And the multi-laminated crystal adopts a high-thermal-conductivity diamond film, so that transverse rapid diffusion of heat is realized, local heat accumulation and temperature rise are relieved, wavefront distortion and a thermal lens effect caused by thermally induced refractive index change are reduced, and the stability of a laser mode is improved. The cube-corner prism is used as a resonant cavity mirror surface, can automatically compensate angle deviation, optimizes mode matching in the cavity, has a synergistic effect with a zigzag total internal reflection path in the crystal, further balances a heat affected zone, improves light field distribution, and remarkably improves light beam uniformity, stability and TEM00 mode quality. The structure is high in adaptability, is suitable for various wavelengths, pumping modes and thermal loads, and assists the laser to realize miniaturized, high-integration and high-performance output.

The utility model provides a GHz femtosecond pulse laser generating device which comprises a low-frequency femtosecond pulse laser generating assembly and at least two repetition frequency multiplication units. Each repetition frequency multiplication unit comprises a polarization beam splitter, an optical fiber delay line and a polarization beam combiner, input light of the repetition frequency multiplication units is divided into two paths of linearly polarized light through the polarization beam splitters, one path of linearly polarized light directly enters the polarization beam combiners, and the other path of linearly polarized light enters the polarization beam combiners through the optical fiber delay lines; and the two paths of linearly polarized light are output after being subjected to polarization beam combination in the polarization beam splitter. According to the utility model, by adopting an extra-cavity repetition frequency multiplication mode of polarization beam splitting and beam combination, the problems that the femtosecond GHz pulse directly output by the laser is difficult to weld due to too short optical fiber length and the stability of the solid laser is poor are solved, and the problems that the pulse is uneven due to cascade frequency multiplication through a coupler and the power is reduced due to the addition of an attenuator are solved; and low noise, high stability, long service life and all-fiber output of the GHz femtosecond laser are realized.

The embodiment of the invention discloses a solid laser with adjustable pulse width. According to one specific implementation mode, the solid laser comprises a shell, a pumping source, a gain medium, a controller, a pulse width regulation and control assembly, a first cavity mirror, a second cavity mirror, a Q-switching unit and a monitoring feedback device are arranged in the shell, and the pumping source is installed in front of the first cavity mirror; the gain medium is mounted behind the first cavity mirror, and the pumping source is configured to emit pumping light to the gain medium; the gain medium, the Q-switching unit and the second cavity mirror are sequentially arranged from front to back; the pulse width regulation and control assembly is installed in a resonant cavity of the laser. The monitoring feedback device is installed at the output end of the solid laser and used for detecting the actual pulse width and feeding back the actual pulse width to the controller. The controller is in communication connection with the monitoring feedback device and the pulse width regulation and control assembly. According to the embodiment, the actual pulse width of the output laser can be detected in real time, and the pulse width of the output laser can be adjusted. Therefore, the working accuracy of the laser can be improved.

The utility model relates to the technical field of laser devices, and discloses a laser assembly and a solid laser thereof, and the laser assembly comprises a liquid cooling heat dissipation block which is provided with an installation cavity arranged along the axial direction in a through manner, and is used for introducing a cooling medium; the number of the laser array modules is at least two, each laser array module comprises a strip-shaped heat conduction block and a plurality of bar units arranged in an arrayed mode, the bar units on each heat conduction block are connected in series, the heat conduction blocks are all arranged on the inner wall of the installation cavity and arranged in the circumferential direction, and the heat conduction blocks are used for conducting heat of the bar units to the liquid cooling heat dissipation block; and the heat is taken away by a cooling medium introduced into the liquid cooling heat dissipation block. By means of the mode, on the premise that it is guaranteed that the laser has high power and heat dissipation efficiency, it is guaranteed that no liquid leakage problem occurs after long-term use, the strip-shaped heat conduction blocks and the multiple strip units arranged in the extending direction of the heat conduction blocks can be replaced, and the maintenance cost of the laser is reduced.

A pumping module of a VCSEL side-pumped solid-state laser and a corresponding solid-state laser. The pumping module uses a design of pumping in an even number of directions, achieves a symmetrical pumping cavity and a mutual reflection chamber, and improves pumping light distribution uniformity. By means of the high reflectivity characteristic of surfaces of VCSEL chips (2) and a packaging substrate and a heat sink (1) therefor, a design in which no independent reflection chamber is provided and the heat sink (1) is integrated is realized, the structure is simplified, and the symmetry of light spots is improved. In addition, a cooling pipe (4) having a frosted outer surface is introduced, so that the uniformity of light beams is further improved by means of a diffusion mechanism, and reflection on the surfaces of the VCSEL chips (2) is used to compensate for possible loss, thereby ensuring that optical-to-optical efficiency is almost unchanged. By using an eccentric pumping structure and an optimized wavelength distribution of the VCSEL chips (2), the absorption uniformity of a crystal rod (200) is further improved; and the uniformity of light beams can be effectively improved, especially when the diameter of the crystal rod (200) is large. The present invention has the advantages of a simple structure, stable performance and good light spot symmetry.

The invention relates to a high-power dual-wavelength erbium-doped solid laser, and belongs to the technical field of laser. The high-power dual-wavelength erbium-doped solid laser comprises a pumping source, a pumping cavity, a diamond, a heat sink, a first resonant cavity and a second resonant cavity, the first resonant cavity comprises a first erbium-doped YAG slice crystal, and the second resonant cavity comprises a second erbium-doped YAG slice crystal. The first erbium-doped YAG sheet crystal is used for generating 1.64 [mu] m laser which oscillates back and forth in a back-and-forth light path provided by the first resonant cavity; and the second erbium-doped YAG sheet crystal is used for generating 2.94 [mu] m laser which oscillates back and forth in a back-and-forth light path provided by the second resonant cavity. According to the high-power dual-wavelength erbium-doped solid laser provided by the invention, synchronous output of 1.64 mu m and 2.94 mu m dual-wavelength laser is realized, the multifunctionality and medical adaptability of the laser are enhanced, and multi-type treatment requirements of soft tissues and hard tissues can be met at the same time.

The invention discloses a high-power torsional mode cavity single-frequency laser based on a slab crystal, which belongs to the technical field of solid lasers and comprises two pumping sources, two pumping shaping mirror groups, two reflectors, a slab laser crystal, three quarter-wave plates, an electro-optic Q-switched crystal, a polarizer, a total reflection plano-concave cavity mirror and an output cavity mirror. Pump light emitted by the two pump sources passes through the two pump shaping lens sets and then passes through the two reflectors to be injected into the lath laser crystal, and the first quarter-wave plate and the third quarter-wave plate are combined to achieve the torsional mode cavity technology. The electro-optic Q-switched crystal, the second quarter-wave plate and the polarizer which are sequentially arranged are combined to modulate continuous light in the resonant cavity into pulsed light, and the total reflection plano-concave cavity mirror and the output cavity mirror are combined to serve as a cavity mirror of the resonant cavity. According to the invention, the existing pumping power limited to tens of watts can be improved to hundreds of watts, the existing single-frequency laser power limited to watt level can be improved to tens of watts, and the cooperative improvement of high power and single-frequency characteristics is realized.

The invention provides a high-speed and multi-dimensional spatial light field regulation and control device, which can realize high-speed regulation of multiple dimensions such as amplitude, phase, polarization and the like of a spatial light field. Comprising a pumping regulation and control system, a collimation focusing shaping system and a laser resonance system which are sequentially installed through a three-dimensional adjusting frame along a light path, and the three systems are located on the same horizontal optical axis and are vertically arranged. The pumping regulation and control system comprises a signal generator, a driving circuit and a pumping source; the collimating focusing shaping system comprises a collimating lens, a conical lens or a cylindrical lens and a focusing lens, the laser resonance system comprises a laser crystal and a laser resonant cavity, and the laser resonant cavity comprises a compact parallel plane cavity and an open type optical resonant cavity. Laser pulses with different amplitude characteristics can be output at different moments; laser pulses with different phase characteristics can be output at different moments; and laser pulses with different polarization characteristics can be output at different moments.

The invention provides a dual-wavelength laser therapy apparatus, which comprises a 980-nanometer and 532-nanometer laser coupler, a 980-nanometer laser, a 532-nanometer laser, a 980-nanometer laser optical fiber and a 532-nanometer laser optical fiber, and is characterized in that the 980-nanometer laser is connected with the 980-nanometer and 532-nanometer laser coupler through the 980-nanometer laser optical fiber, and the 532-nanometer laser is connected with the 980-nanometer and 532-nanometer laser coupler through the 532-nanometer laser optical fiber. And the 532 nanometer laser device is connected with the 980 nanometer and 532 nanometer laser couplers through the 532 nanometer laser device optical fiber. The laser therapy apparatus provided by the technical scheme of the invention replaces a laser therapy apparatus comprising a solid laser in the prior art, adopts the fiber laser, does not have the problem of instability of the solid laser, and is faster to start and low in power consumption.

The mid-infrared optical parametric oscillator pumped by the dual-wavelength nanosecond pulse solid laser can simultaneously output 1.9 micron laser and 2.1 micron laser, realizes broad spectrum / multi-wavelength output of the mid-infrared optical parametric oscillator, and can ensure that mid-infrared laser has excellent beam quality and relatively high output power. The output power of the 1.9 [mu] m optical fiber laser pumping source is hectowatt magnitude, and the 1.9 [mu] m optical fiber laser pumping source serves as a pumping source of a Ho crystal in the solid laser oscillator. In a Tm solid laser oscillator and a Ho solid laser oscillator, a resonant cavity comprises two plano-concave sub-cavities, the two plano-concave sub-cavities are a Tm crystal oscillation cavity and a Ho crystal oscillation cavity respectively, the two plano-concave sub-cavities share one output mirror, the Tm crystal oscillation cavity adopts a 793 nm semiconductor laser for pumping, and the Ho crystal oscillation cavity adopts a 1.9 [mu] m optical fiber laser pumping source I for pumping; in the phosphorus-germanium-zinc optical parametric oscillator, a planar four-mirror annular cavity is used as a single-resonance optical parametric oscillation cavity.

The invention discloses a generation system and method based on a vector light beam of any structure, and the system comprises a laser, a collimating and beam expanding element, a polarizing film, a first half-wave plate, a beam splitting cube, a polarization beam splitting cube, a reflector, a second half-wave plate, a quarter-wave plate, a Fourier lens, a spatial light modulator, a computer, and a camera. Two parallel light beams which are generated by a continuous wave solid laser and a half-wave plate and have an orthogonal polarization state are respectively irradiated on spatial light modulators which are loaded with different topological charge values and are used for customizing light beam holograms with any shapes and structures, are modulated by the spatial light modulators, and are coaxially superposed with a Fourier lens through a quarter-wave plate; and the customized vector light beam with any shape and uniform intensity can be generated. According to the invention, the direct mapping of a real object can be realized, the light beam quality is improved, and the polarization state is flexibly regulated and controlled.

The invention discloses a 1319nm laser based on a torsional mode cavity and a lath configuration, which belongs to the technical field of solid lasers and comprises an oscillator stage, a pre-amplifier, a first-stage main amplifier and a second-stage main amplifier which are sequentially arranged, the oscillator stage generates a [mu] J magnitude narrow linewidth pulse laser and outputs the [mu] J magnitude narrow linewidth pulse laser to the pre-amplifier, the pre-amplifier amplifies the incident narrow linewidth pulse laser to an mJ magnitude and outputs the laser to the first-stage main amplifier, the first-stage main amplifier amplifies the incident narrow linewidth pulse laser to a dozens of mJ magnitude, and the second-stage main amplifier outputs the amplified laser to the second-stage main amplifier. The second-stage main amplifier amplifies the incident narrow-linewidth pulse laser to a magnitude of hundreds of mJ, and outputs the narrow-linewidth pulse laser to the second-stage main amplifier. The system outputs narrow-linewidth pulse laser with excellent light beam quality, and can be widely applied to the field of laser radar detection.

The invention provides a light generating system (1000) comprising a multi-chip laser package (2000), a luminescent material (200 ), and optics (500), wherein: (A) the multi-chip laser package (2000) comprises (i) a first series (51) of first solid state laser devices (110), configured to generate first laser light (111 ) having a first peak wavelength (λp1), (ii) a second series (52) of second solid state laser devices (120) configured to generate second laser light (121 ) having a second peak wavelength (λp2), and (iii) a third series (53) of third solid state laser devices (130) configured to generate third laser light (131 ) having a third peak wavelength (λp3); wherein the multi-chip laser package (2000) further comprises a support (2300) configured to support the solid state laser devices (110, 120, 130,...); (B) the first peak wavelength (λp1) and the second peak wavelength (λp2) are independently selected from the wavelength range of 440-490 nm, and the third peak wavelength (λp3) is selected from the range of 590-780 nm; (C) the luminescent material (200) is configured in a transmissive mode downstream of the first solid state laser devices (110) and is configured to convert at least part of the first laser light (111) into luminescent material light (201 ) having one or more wavelengths in the wavelength range of 490-590 nm and having a centroid wavelength (λcL); wherein λcL ≥ λp1+15 nm, λcL ≥ λp2+15 nm, and λcL ≤ λp3 - 15 nm; (D) the luminescent material (200) and, the second solid state laser devices (120), and the third solid state laser devices (130) are configured such that during operation of the second solid state laser devices (120) and the third solid state laser devices (130) the second laser light (121) and the third laser light (131) bypasses the luminescent material (200); (E) the light generating system (1000) is configured to provide in a first operational mode of the light generating system (1001) white system light (1001) comprising the luminescent material light (201), the second laser light (121), and the third laser light (131); and (F) the optics (500) are configured to one or more of (a) mix different light contributions to the system light (1001), and (b) beam shape the system light (1001).

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 lasers, and discloses a high-power infrared solid laser which comprises a first pumping input unit, a second pumping input unit, a laser output unit, a cavity length adjusting unit and a resonant cavity. The resonant cavity comprises a first dichroic mirror, a first gain crystal, a second dichroic mirror, a first spectroscope, a third dichroic mirror, a second gain crystal, a fourth dichroic mirror and a second spectroscope, and the cavity length adjusting unit is used for adjusting the position of the first spectroscope. The position of the first spectroscope is adjusted through the cavity length adjusting unit so as to adjust the length of the resonant cavity, two paths of pump light are stable resonant cavities, and then stable output of all-solid-state, high-beam-quality and high-power infrared solid laser is achieved.

The utility model provides an intermediate infrared solid laser for medical cosmetology, which belongs to the technical field of solid lasers and comprises a laser cavity, a laser resonant cavity, an indicator light source, a 45-degree reflector, a coupling mirror and an output optical fiber. The laser cavity is a double-xenon-lamp single-crystal rod; the laser resonant cavity comprises an output mirror and a total reflection mirror which are coaxially and fixedly erected at the two ends of the laser cavity respectively. One of the output mirror and the total reflection mirror is a concave mirror; a 45-degree reflecting mirror, a coupling mirror and an output optical fiber are coaxially and fixedly erected at one end of the output mirror in sequence; the indicating light source is erected on one side of the 45-degree reflecting mirror and emits indicating light, and the indicating light is reflected by the 45-degree reflecting mirror and enters the coupling mirror; light beams and indicating light of the laser cavity pass through the 45-degree reflecting mirror and the coupling mirror and are output from the output optical fiber. According to the utility model, the mid-infrared solid laser is used as a light source, the treatment effect is achieved with small energy, the recovery period is short, and the user experience is good.

The present invention relates to the technical field of laser manufacturing, and particularly discloses a welding method for a novel crystal slab and disc, comprising the following steps: plating a gold film on the welding surfaces of a heat sink and a laser amplification medium, plating a special film layer on the gold film, assembling an indium solder sheet, the heat sink plated with the special film layer, and the laser amplification medium plated with the special film layer into an assembly, placing the assembly in a welding furnace, and heating and pressurizing for welding, so that an interfacial micro-region eutectic reaction occurs between the special film layer and the surface of the indium solder sheet to fill the weld seam of the welding surface. Compared with the traditional technology, this technical solution effectively avoids the pollution and voids generated by the large-scale melting of the solder. Since the pressure applied during welding is small, it avoids the problem that the stress of the solid laser is too large to retreat easily, solves the defects generated during the laser welding process, ensures the performance and working reliability of the laser, and provides a method for the solid laser to generate a higher power and better beam quality.

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 utility model relates to the technical field of laser equipment, in particular to a laser assembly, a solid-state laser and laser processing equipment, and the laser assembly comprises a birefringent crystal which is used for emitting solid-state laser under the pumping effect, and the solid-state laser comprises two pieces of orthogonal polarized light with different wavelengths; the Q switch is arranged at one end of the birefringent crystal and is used for controlling the output of the solid-state laser; and the dual-wavelength output coupler is arranged at one end, deviating from the birefringent crystal, of the Q switch and is used for coupling and outputting two orthogonal polarized lights in the solid-state laser. Through the mode, the energy loss in the laser pumping cavity can be reduced, so that the laser threshold value is reduced, and the laser output power is improved.

The invention discloses a laser batten welding device and method, and belongs to the technical field of solid lasers. The laser batten welding device comprises a fixing frame, the fixing frame comprises a bottom plate and side vertical plates, a laser batten assembly is arranged on the fixing frame, a first heating block is arranged at the top of the laser batten assembly, a second heating block is arranged between the laser batten assembly and the bottom plate, the top of the first heating block abuts against a first pressing block, and the top of the second heating block abuts against a second pressing block. The side face of the laser batten assembly abuts against a second pressing block, and the first pressing block and the second pressing block abut against the bottom plate and the side vertical plate of the fixing frame through two spring limiting devices arranged on the side vertical plate and the bottom plate respectively. The laser batten welding device is simple in structure, easy and convenient to operate and capable of achieving rapid and high-quality welding of laser battens.

The present application provides a multi-mode control method, device, electronic device and storage medium for a solid-state laser, and relates to the field of laser mode control technology. The method includes: obtaining the requirement information of the workpiece to be processed for the solid-state laser; determining the target mode of the solid-state laser corresponding to the requirement information, and searching the target mode parameters of the solid-state laser in a preset database; when it is determined that the solid-state laser is in standby mode, sending a control instruction corresponding to the target mode parameter to the solid-state laser, so that the solid-state laser switches from standby mode to target mode based on the control instruction, and processes the workpiece to be processed according to the parameter information in the target mode. The solid-state laser in this application can intelligently switch modes to achieve quality-assured processing of workpieces to be processed with different processing requirements, effectively expanding the application range of solid-state lasers.

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 invention discloses a temperature-driven tunable all-solid-state 1.5-micron cross-polarization dual-wavelength laser, and belongs to the technical field of solid lasers. The laser comprises a laser pumping source, a light beam shaping device and a laser resonant cavity which are sequentially arranged along a light path, a cooling device is mounted outside the laser resonant cavity; the laser resonant cavity comprises a laser crystal arranged on a light path; laser emitted by the laser pumping source passes through the light beam shaping device and then is focused and incident into the laser crystal, and the laser crystal is selected from one of an a-cut Er < 3 + > / Yb < 3 + > double-doped borate crystal, an Er < 3 + > / Yb < 3 + > double-doped vanadate crystal and an Er < 3 + > / Yb < 3 + > double-doped yttrium aluminum garnet crystal. The all-solid-state 1.5-micron cross-polarization dual-wavelength laser with tunable power is realized by utilizing the photo-thermal anisotropy of the a-cut Er < 3 + > / Yb < 3 + > double-doped 1.5-micron laser crystal and adjusting the crystal temperature through the cooling device.

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.

The invention discloses a solid-state laser of a spectrum beam combination semiconductor laser pump. The solid-state laser comprises a spectrum beam combination pumping source system, a pumping coupling system and a solid-state laser resonant cavity, pump light emitted by the spectrum beam combination pump source system is collimated and focused through the pump coupling system and then enters a gain medium of the solid laser resonant cavity, generated oscillation light of a first wavelength oscillates in the solid laser resonant cavity in a reciprocating mode, and laser output of a second wavelength is achieved. High-power pumping can be carried out on the gain medium under the condition that the quality of pumping laser beams is not reduced, the problem that the quality of the beams is poor in traditional semiconductor laser direct pumping is solved, and a research basis is provided for follow-up power improvement.