84 results about "Lens effect" patented technology

The gallium nitride-based semiconductor laser comprises a substrate, a lower limiting layer, a lower waveguide layer, an active layer, an upper waveguide layer and an upper limiting layer which are sequentially arranged from bottom to top. According to the semiconductor laser element, the multi-vacancy electron phonon regulation and control layers of a multi-layer structure are arranged in the semiconductor laser element, and the electron affinity distribution characteristic and the polarization optical phonon energy distribution characteristic of each multi-vacancy electron phonon regulation and control layer are limited, so that single-vacancy, vacancy group and multi-vacancy regulation and control electron phonon structures are formed; the electron phonons are localized between the lower limiting layer and the lower waveguide layer, stokes frequency shift formed by photon energy difference between pump light and oscillation light is reduced, phonon vibration and phonon transport heat loss are reduced, the heat dissipation performance of a laser element is improved, thermal mismatch between epitaxial layers is improved, the thermal lens effect and stress birefringence effect of the laser are inhibited, and the laser efficiency is improved. The problems of laser beam distortion and depolarization are improved, and the laser beam quality factor is improved.

The invention discloses a laser resonant cavity thermal drift suppression method and system and a laser, relates to a thermal lens effect and cavity length drift adaptive compensation technology of a high-power laser system, and aims to solve the problems of low cavity length adjustment sensitivity and slow response speed in the prior art. The method comprises the following steps: monitoring the central wavelength of a Raman Stokes spectral line in a laser resonant cavity in real time by adopting a spectral analysis module and obtaining the drift distance of the Raman Stokes spectral line; the FPGA controller determines the cavity length compensation amount of the laser resonant cavity according to the drift distance; and the FPGA controller controls the piezoelectric actuator according to the cavity length compensation amount to adjust the cavity length of the laser resonant cavity in real time so as to suppress thermally induced wavelength drift. The laser comprises a pumping source, a laser resonant cavity, a crystal arranged in the laser resonant cavity and a laser resonant cavity thermal drift suppression system, pumping light generated by the pumping source enters the laser resonant cavity, and Stokes light output by the laser resonant cavity enters the laser resonant cavity thermal drift suppression system.

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 invention discloses a solar spectrum frequency division combined heat and power generation system and an operation method, and relates to the technical field of renewable energy sources, and the method comprises the following steps: S001, building a coupling analysis baseline among irradiation parameters, heat distribution and optical characteristics, collecting the real-time temperature data and light beam wavefront information of a spectrum frequency divider under the condition of sun illumination, and calculating the real-time temperature data and light beam wavefront information of the spectrum frequency divider; and generating an estimated atlas of refractive index gradient distribution based on a thermally induced refractive index change rule. Through heat, light and force coupling control, accurate prediction, real-time identification and dynamic correction of the thermal lens effect are achieved, a closed-loop feedback mechanism is established, stable alignment of photoelectric and photo-thermal paths is guaranteed, the system energy efficiency and operation reliability are effectively improved, and the problems of deviation, energy efficiency reduction and part damage caused by a thermal lens in the prior art are solved.

The application relates to the technical field of lenses and provides a lens effect evaluation method and device based on image vision, equipment and a medium. Images respectively photographed by multiple lenses in a camera device are acquired; the images are spliced to generate a panoramic image; exposure parameters are generated by detecting the synchronization degree of the exposure states between the lenses based on image parameters corresponding to the images and the panoramic image; panoramic parameters are generated by detecting whether the coverage range corresponding to the panoramic image is complete; color parameters between the lenses are generated based on the color distribution in the images; and a lens effect evaluation report is generated according to the exposure parameters, the panoramic parameters and the color parameters. The exposure synchronization degree, the panoramic integrity and the color consistency of the lenses can be accurately and comprehensively evaluated in the application scene of multiple lenses, comprehensive quantitative indexes are provided for the multiple-lens effect evaluation, the comprehensiveness and accuracy of the generated image information under the multiple lenses are ensured, and the visual effect and the user experience of the product are improved.

The invention discloses a high-performance infrared focal plane detector based on a super-structure lens effect, and belongs to the technical field of photoelectric detection. The core of the invention lies in providing a novel detector architecture which carries out integrated collaborative design on metal microcavity resonance and a super-structure lens condensation effect at a pixel level. Multi-physical field collaborative optimization is carried out on a quantum well material, a metal microcavity structure and an array period, so that periodically arranged detector pixels simultaneously have dual functions of microcavity resonance frequency selection and microlens wavefront regulation and control. On one hand, incident infrared light is converged through a super-structure lens effect induced by an array period, and the energy density of a light field is enhanced; on the other hand, incident light coupled into the metal microcavity can excite a resonance mode in the microcavity, and the active area light field is further locally strengthened. According to the invention, additional optical elements are not needed, the process is completely compatible with the existing focal plane technology, and a brand new technical approach is provided for high-performance narrow-band infrared detection.

The invention discloses a cavity parameter optimization method for a bicrystal regeneration amplification structure. The bicrystal regeneration amplification structure to be optimized comprises an optical resonant cavity, two gain crystals arranged in the optical resonant cavity, a pumping source, a pumping light path system matched with the gain crystals, an optical switch arranged in the optical resonant cavity and a reflector used for forming the resonant cavity, the method comprises the following steps: determining the relative position and spacing of two gain crystals in an optical resonant cavity; calculating and designing the physical cavity length of the optical resonant cavity according to the electro-optical switch response time of the optical switch; the curvature radius of the reflector is calculated and selected according to the thermal lens effect possibly generated by the gain crystals under high-power pumping, and the pumping power distribution of the pumping light path system to the two gain crystals is optimized according to the output power of the pumping source and the thermal performance of the two gain crystals. And pumping energy and heat load generated by the pumping energy are dispersed on the two gain crystals.

The invention relates to the technical field of filter membrane processing, and discloses a preparation method and a preparation system for preparing a through-hole filter membrane by using reflective Bessel laser. The preparation system for preparing the through hole filter membrane by using the reflection type Bessel laser comprises a light beam shaping assembly and a transmission assembly, the beam shaping assembly is used for reflecting and converting the incident laser into a Bessel beam; the transmission assembly is arranged on a light path of the Bessel beam and used for transmitting a non-diffraction area of the Bessel beam to a machining station. By arranging the beam shaping assembly, the incident laser can be reflected and converted into the Bessel beam instead of being transmitted to form the Bessel beam. The reflective design can avoid energy absorption of a transmission element, and is suitable for long-time high-power processing; the reflection type design does not need to consider the transmissivity of the material, and can support the incident laser from the ultraviolet band to the infrared band; the reflective design has no thermal lens effect, and the focal depth stability of a Bessel beam diffraction-free area is high.

The application discloses a semiconductor laser chip for improving wide ridge thermal lens effect, wherein a P-type limiting layer of the chip is in a ridge table shape, and both sides of the ridge table shape are inwardly recessed grooves. Surfaces of the grooves are covered with insulating layers. The top surface of the ridge table is covered with an ohmic contact layer. A P-face electrode layer is covered on the insulating layer and the ohmic contact layer, and a hole is formed between the P-face electrode layer and the insulating layer at the groove. The semiconductor laser chip structure of the application sets both side walls of the P-type limiting layer in a ridge table shape as a recessed groove structure, thereby forming a hole structure at the groove. Since the air heat dissipation coefficient in the insulating layer and the hole is very low, the heat dissipation efficiency at the side wall of the ridge P-type limiting layer is poor, the convex temperature distribution of the P-type limiting layer in the side wall direction is eliminated, the temperature of the middle region and the edge region of the P-type limiting layer is consistent, the thermal lens effect is eliminated, and the light beam quality of the semiconductor laser is effectively improved.

The utility model discloses a detachable projection bulb, and relates to the technical field of projection lamps, the detachable projection bulb comprises a first lamp holder, a lamp wick and a transparent second lamp holder, the first lamp holder is detachably connected with the second lamp holder, the lamp wick comprises a lamp bead and a rubber plug, and the rubber plug is embedded in a cavity of the first lamp holder; the lamp bead is detachably connected with the rubber plug and extends into the cavity of the second lamp holder; the lower portion of the second lamp cap is clamped with the base body, the base body is detachably connected with the lamp tube, and a projection assembly is arranged in the lamp tube. Through the detachable design of the first lamp holder and the second lamp holder, the lamp beads can be detached and replaced in time after being damaged. The projection bulb is of a multi-sealing waterproof structure design, the outdoor waterproof effect is effectively improved, and the projection bulb is suitable for different outdoor decorative lamp strings. The projection sheet in the projection bulb can be replaced, for example, the projection sheet conforming to the scene can be replaced in Christmas and Halloween, and through the multiple convex lens effects of the small convex lens and the large convex lens, the projection modeling is clearer, and the effect is better.

The present invention discloses a detection device and method for the laser thermal lens effect of an optical crystal, which relates to the field of thermal lens effect detection and includes a pump laser, a probing red laser, and a power detector. Along the beam direction of the pump laser, a beam combiner, a crystal sample stage, and a beam splitter are sequentially arranged. A front reflecting mirror is arranged in the beam direction of the probing red laser, and the front reflecting mirror is used to reflect the beam of the probing red laser towards the beam combiner, so that the beam of the probing red laser coincides with the beam of the pump laser and passes through the optical crystal. A rear reflecting mirror is arranged corresponding to the power detector. The present invention makes the pump laser and the probing light coincide and pass through the optical crystal. By heating the optical crystal with the pump laser, the thermal lens effect of the optical crystal is induced and amplified, and then the probing light is detected, so as to clearly judge the strength of the thermal lens effect of the optical crystal, which is beneficial to the grading of the crystal quality and the improvement of the production process.

The present invention relates to the field of optical technologies, and particularly to a measuring device and a measuring method for the thermal effect parameters of a disk laser crystal. The measuring device includes a first laser, a lens group, a beam splitting prism, a fixed-focus lens, a filtering unit, an imaging unit, a standard plane mirror, and a measuring unit; the lens group and the beam splitting prism are sequentially arranged along the light output optical path direction of the first laser. The first laser is used for emitting a probe light, and the probe light is expanded and collimated by the lens group and then split by the beam splitting prism. The first transmitted light forms a reference light spot; after the first reflected light is reflected by the standard plane mirror, a second reflected light is obtained, and the measuring unit is arranged along the optical path direction of the second reflected light; after the second reflected light is transmitted by the beam splitting prism, it is reflected by the disk laser crystal and returns along the original path to form a detection light spot. The technical solution provided by the present invention can not only measure the parameters of the thermal lens effect of the disk laser crystal in the laser to be measured, but also measure the parameters of the thermal air wedge effect.

The invention belongs to the field of galvanometer laser welding, and particularly relates to double-head quasi-synchronous laser welding equipment which comprises a rack and a displacement mechanism mounted at the top, and the displacement mechanism is used for adjusting different positions to weld workpieces; the welding mechanism is mounted on the displacement mechanism and is used for welding the workpiece; the first treatment mechanism is installed on the welding mechanism and used for blocking chippings generated during welding and meanwhile conducting cooling treatment on the edge and the front face of the galvanometer body; through air seal protection and rotary heat dissipation of the first processing mechanism, welding scraps and dust are intercepted, accumulated heat on the outer edge of the galvanometer body is rapidly guided out, and impurity attachment and lens thermal deformation are avoided; and the second treatment mechanism realizes removal of harmful substances and impact type cooling of the bottom surface of the galvanometer through purification, refrigeration and recovery of hot flue gas in a closed loop, so that the environment-friendly working environment is guaranteed, a heat dissipation system is formed by the second treatment mechanism and the first treatment mechanism, the thermal lens effect is effectively inhibited, and the service cycle of the galvanometer and core components is remarkably prolonged.

The invention discloses a gradient refractive index lens-based beam shaping optical system and a design method thereof, the optical system comprises at least one divergent gradient refractive index lens and at least one convergent gradient refractive index lens, and the divergent gradient refractive index lens and the convergent gradient refractive index lens are combined and configured along the same optical axis. The arrangement sequence of the gradient refractive index lenses and the relative position relation of the gradient refractive index lenses in the optical axis direction are designed, so that the optical system forms an afocal light path structure on the whole. The optical system is used for carrying out transverse scale regulation and control on an incident light beam and realizing light beam expansion, light beam shrinkage and light beam shaping on the premise of keeping approximate collimation propagation characteristics of an output light beam. According to the structure, the thermal lens effect in high-power laser can be avoided, the stability and reliability of the system are improved, tight attachment, cascade expansion and direct coupling with optical fibers are supported, and miniaturization and integration application is facilitated.

The invention discloses a data line ice-permeable sheath forming mold, and relates to the technical field of injection molding. The data line ice penetration sheath forming mold comprises a first movable mold base, a first fixed mold base is arranged on the right side of the first movable mold base, a second movable mold base is arranged on the back of the first movable mold base, a second fixed mold base is arranged on the right side of the second movable mold base, and a first mold body is arranged between the first movable mold base and the first fixed mold base. And a second mold main body is arranged between the second movable mold base and the second fixed mold base. According to the data line ice-permeable sheath forming mold, the first mold body and the second mold body are made of SR136 steel, mirror polishing treatment is carried out on a cavity of the mold, a split type design is adopted for an injection mold, and meanwhile, an ox horn gate is arranged for injection molding, so that the problem of the appearance of an ice lens surface outer mold glue line closing can be solved; and meanwhile, the ice lens surface effect is better, so that the final data line ice-permeable sheath forming piece has better appearance quality.

Embodiments of the present application provide an image processing method, device and equipment, and relate to the technical field of computers, in particular to the technical field of image processing. The specific implementation scheme is: obtaining a beauty lens image and a face image to be tried on with the beauty lens; segmenting an iris local image containing an iris region from the face image; performing first fusion processing on the iris local image and the beauty lens image to obtain a local beauty lens effect image; wherein the first fusion processing is used for integrating an image style of the beauty lens image into the iris local image and retaining texture features of the iris local image; performing second fusion processing on the local beauty lens effect image and the face image to obtain a beauty lens try-on image; wherein the second fusion processing is used for integrating the image style of the local beauty lens effect image into an eye region of the face image. It can be seen that, through the present scheme, a beauty lens try-on image with high simulation effect can be generated.

The invention belongs to the technical field of solid lasers, and particularly relates to a laser for realizing wide-temperature adaptive enhancement based on a temperature regulation and control pumping angle, which comprises a differential heat sink system, an LD array pump, a focusing coupling system, an input mirror, a temperature regulation and control gain crystal system and an output mirror which are sequentially arranged from left to right, and a temperature regulation feedback line, a temperature feedback line and an intelligent central processing system, wherein the differential heat sink system and the temperature regulation gain crystal system are connected with the intelligent central processing system through the temperature regulation feedback line and the temperature feedback line respectively. The differential heat sink system, the temperature control gain crystal system and the intelligent central processing system are organically combined, laser gain optimization in a wide temperature range is achieved by dynamically adjusting the pumping angle and compensating the thermal focal length, and the problem of gain loss caused by the thermal lens effect during long-time work of the laser is effectively solved. The device is simple in structure, and has the characteristics of high efficiency and self-adaption.

The present invention aims to provide an optical system of a laser processing apparatus in which the energy utilization efficiency of laser light is high, and the intensity distribution shape of the laser light at an irradiation point does not change even if the focal point position deviates due to thermal lens effect, and a laser processing apparatus using the optical system of the laser processing apparatus. To achieve this aim, the laser processing apparatus for processing a work by irradiating laser light according to the present invention has an optical system having optical surfaces in which a plurality of different focal points are provided on the same optical axis, and an irradiation point of the laser light on the work is at a different position from the focal points, and the intensity distribution of the laser light on a plane perpendicular to the optical axis at the irradiation point is annular at least with the optical axis as the center.

The application relates to the technical field of continuous laser optical film, in particular to a low-heat-effect laser film and a preparation method thereof. The method comprises the following steps: designing a film system according to laser wavelengths and optical performance and simulating and optimizing; precisely polishing a substrate, ultrasonic cleaning and activating; alternately preparing high and low refractive index functional layers and interface modification layers by physical vapor deposition and atomic layer deposition, setting the interface modification layers between the adjacent high and low refractive index functional layers, forming a periodic stacking structure; and annealing treatment under an inert atmosphere at 150-300 DEG C to obtain a finished product. The method has the advantages that: phonon bridging and interface passivation are realized through nano-Al2O3 interface modification, interface thermal resistance is significantly reduced, heat accumulation and thermal lens effect are inhibited, and the laser damage threshold is improved; the process is controllable, the film layer is dense and uniform, and the method is suitable for antireflection, high-reflection or light-splitting devices of high-power continuous laser systems.

The invention relates to the technical field of laser control, and discloses a multi-dimensional state linkage carbon dioxide laser output closed-loop control method and system, and the method comprises the steps: obtaining a target output parameter and the real-time attitude data of a light guide system; determining geometric transmission limitation parameters according to the attitude data, and calculating and predicting light beam characteristics in combination with a heat effect mapping relation; if the predicted light beam characteristics do not meet the safety threshold value, executing a first strategy, and on the premise of keeping the target monopulse energy constant, adjusting the combination of the peak power and the duty ratio of the laser driving signal so as to improve the light beam characteristics; and if the threshold value is met, executing a second strategy, and performing energy compensation on the laser driving signal according to the transmission loss. Through dynamic waveform reconstruction and linear compensation, the problem of transmission limitation caused by posture change of the light guide arm and a thermal lens effect is solved, and the accuracy of laser output energy and the safety of the system are ensured.

The invention relates to the technical field of solid lasers, in particular to a large-energy green laser. The laser comprises a first pumping source, a first pumping coupling device, a second pumping source, a second pumping coupling device, a resonance assembly, a first frequency doubling crystal, a second frequency doubling crystal, a Q-switching device, a first crystal and a second crystal. The resonant assembly is used for forming a laser resonant cavity and further comprises a compensation device. According to the large-energy green laser provided by the invention, the thermal lens effect of the laser crystal can be weakened through the double-pumping double-crystal, so that the fundamental frequency light can be better amplified. And the arranged compensation device can also improve the overall thermal management of the laser by compensating the thermal lens effect, and is beneficial to outputting stable and high-energy laser.

The invention relates to a single-cavity Tm-Ho co-doped fluoride crystal dual-frequency Kerr lens mode-locked laser, which belongs to the technical field of optics, and comprises a pumping source for emitting pumping light, a convergent lens, four plano-concave reflectors and a plane output mirror, a natural birefringence bonding gain crystal is installed between the first plane-concave cavity mirror and the second plane-concave cavity mirror. According to the invention, an auxiliary mode locking crystal with an adjustable thickness is arranged between the third plano-concave cavity mirror and the fourth plano-concave cavity mirror, and the crystal has a very high nonlinear refractive index coefficient, has very high transmittance in a 2-micron wave band, and is very suitable for 2-micron laser mode locking. By combining the Kerr self-focusing effects of the Tm, Ho: LLF / YLF bonding crystal and the ZnS crystal and optimizing the lengths of the two matrix gain crystals, the resonant cavity has different optical lengths for the two cross-polarized lasers, so that the output of the double-repetition-frequency mode-locked pulse laser with the wave band of 2 microns based on the Kerr lens effect can be realized.

A lens configured for a charged particle beam apparatus is described. The lens includes a first electrode configured to be charged to a first potential and a liner tube coupled to the first electrode, the liner tube includes at least a first conductive portion; a ceramic portion upstream of the first conductive portion; and one or more coating layers disposed on the ceramic portion in electrical contact with the first conductive portion. The lens includes a second electrode configured to be charged to a second potential, the first potential and the second potential generating a lens effect between the first conductive portion and the second electrode; and a magnetic deflector having at least a first pair of scan coils provided outside of the liner tube.

The present invention discloses a prism lens combination optical kit and a production method thereof. The optical kit comprises a mounting portion, a kit structure, a prism lens combination optical element, and a production and installation detection component. The prism lens combination optical element is glued in a card slot of the kit structure, so that the optical kit can realize the functions of a prism and a lens. During the assembly and production process, by detecting whether the prism lens combination optical element is tightly glued to the card slot, light path experimental data is collected, and by determining whether the prism lens combination optical element is tightly glued to the card slot, it is determined whether the prism lens effect of the optical kit meets the standard; if the standard is not met, a prompt message is issued, and the positional relationship between the card slot and the prism lens combination optical element is adjusted in time, the design and production process are optimized, and the performance and stability of the optical element are improved.

A method for controlling a LiDAR system and a LiDAR system. The method includes directing a laminar flow of heated air over an opening window of the LiDAR system, a thermal lens effect formed due to a temperature difference between the heated air and an ambient temperature; determining one or more operational parameters of the LiDAR system or a vehicle thereof; and modifying, based on the operational parameter, a flow parameter of the laminar flow. The LiDAR system includes a window; a scanning unit and a detecting unit; a nozzle configured to direct a laminar flow of heated air over the window to induce the thermal lens effect; and a control unit configured to cause the nozzle to direct the laminar flow; determining one or more operational parameters of the LiDAR system or a vehicle equipped therewith; and modifying one or more flow parameters of the laminar flow.

The invention discloses a measurement method and system for multi-laser cooperative detection of nanobubbles, and belongs to the technical field of nanobubble measurement and detection. Through the excitation-detection double-laser system, key data such as the size, the service life and the formation threshold value of the nanobubbles are obtained in real time, the limitation of the traditional optical microscopic imaging resolution ratio is broken through, and the measurement precision is improved. Time-resolved imaging and thermal lens measurement are combined to realize omnibearing bubble monitoring. A time-resolved imaging technology is adopted to obtain information such as nucleation and collapse change of the nanobubbles. And in combination with thermal lens effect measurement, multi-angle measurement is realized. The generation of nano bubbles is accurately regulated and controlled, and laser processing and biological application are optimized. By adjusting parameters, controllable generation of nano bubbles is optimized, and the method is suitable for laser micromachining, microfluidic control, biomarking and other applications. In addition, the method is non-contact optical measurement, electrode or other external intervention is not needed, and the applicability is improved.

The invention discloses a rod-like laser gain medium with radial concentration gradient distribution and a preparation method thereof, and belongs to the technical field of laser materials. Aiming at the thermal lens effect problem caused by Gaussian pump light in a high-power solid laser, the heat effect is inhibited through a material design source. Active ions of the gain medium are transition metal ions, a matrix material is a chalcogenide, the radial doping concentration of the gain medium is in high-low-high gradient distribution, Gaussian pump light intensity distribution is matched, and axis heat production is reduced. The preparation method comprises the steps of machining, transition metal film deposition, high-temperature diffusion and end face polishing. According to the design, the heat effect under high power is obviously inhibited, the light beam quality factor M2 is stabilized at 1.1-1.3, and the light-to-light conversion efficiency is obviously improved. The method is simple in process, low in cost and suitable for industrial production, and can be widely applied to the fields of high-power lasers, medical equipment, industrial processing and the like.

An electron optical module for providing an off-axis electron beam with tunable coma. An electron optical module for providing an off-axis electron beam with tunable coma according to the present disclosure includes: a structure positioned downstream of an electron source; and an electron lens assembly positioned between the structure and the electron source. The structure generates a decelerating electric field and is positioned to prevent electrons from passing along the optical axis of the electron lens assembly. The electron optical module further includes a microlens that is not positioned on the optical axis of the electron lens assembly and is configured to apply a lens effect to the off-axis electron beam. The combination of aberrations applied to the off-axis electron beam by the microlens and the electron lens assembly is such that the coma of the off-axis beam has an expected value in a downstream plane.

The application discloses a solar spectrum frequency division combined heat and power system and an operation method, and relates to the technical field of renewable energy sources, and comprises the following steps: S001, a coupling analysis baseline between irradiation parameters, heat distribution and optical characteristics is established, real-time temperature data and beam wavefront information of a spectrum frequency divider under sunlight conditions are collected, and an estimated atlas of refractive index gradient distribution is generated based on a thermal refractive index variation law. Through thermal, optical and force coupling control, the application realizes accurate prediction, real-time identification and dynamic correction of thermal lens effect, establishes a closed-loop feedback mechanism, guarantees stable alignment of photoelectric and photothermal paths, effectively improves system energy efficiency and operation reliability, and overcomes the problems of deviation, energy efficiency reduction and component damage caused by thermal lens in the prior art.

The invention belongs to the technical field of nanosecond solid laser, and provides a pulse solid laser which comprises a pumping unit used for emitting pumping light, a pumping mirror, a laser crystal, a Q-switched device, a plano-convex reflector, a first reflector, a second reflector, a frequency doubling crystal and an output mirror. The pump light is highly transmitted through the pump mirror and then enters the laser crystal to excite the laser crystal to emit continuous laser; after continuous laser emitted from the laser crystal is input into the Q-switched device, pulse laser is generated and is emitted to the first reflecting mirror; the first reflecting mirror is used for reflecting the pulse laser to the second reflecting mirror; the second reflector is used for reflecting the pulse laser to the frequency doubling crystal for frequency doubling and outputting the pulse laser through the output mirror. According to the invention, the first reflector and the second reflector are arranged to change the transmission path of the laser and shorten the length of the laser cavity so as to reduce the occupation of the transverse space of the laser equipment at the rear end, and the plano-convex reflector is arranged to compensate the thermal lens effect of the laser crystal.