76 results about "Multi wavelength laser" patented technology

The invention discloses an insulator pollution intelligent identification method and system based on a multispectral laser radar, and belongs to the technical field of external insulation state monitoring and intelligent operation and maintenance of a power system, and the method comprises the steps: S1, employing a multi-wavelength laser radar which comprises at least three emission wavebands and comprises 1550 nm to scan an insulator, and selecting at least three wavebands from {355 nm, 405 nm, 532 nm, 905 nm, 1064 nm and 1550 nm}; distance gating is set according to the measuring range, and the width of a time window is 5 ns to 50 ns so as to suppress corona and background interference; through double calibration of an airborne reference sheet and a ground polarization datum plate, fitting is carried out after registration and calibration, angle response correction is carried out on a DPR, and meanwhile, the angle sensitivity of a weight is constrained in complex index solution, so that the relative fluctuation of an SGT under different visual angles is controlled within 3%, and the relative fluctuation of a DPR is controlled within 3%. Therefore, the problem of inconsistent identification results caused by attitude change and incident angle difference is solved.

Provided is a medical skin treatment device including a control unit for controlling the operation of the skin treatment device; a main body which includes a transfer unit and a power supply unit; and a handpiece which is supplied with power from the power supply unit and controlled by the control unit and one side of which is brought into contact with a patient's skin to irradiate same with laser beams. The handpiece includes at least four different laser diodes; the at least four laser diodes radiate laser beams of four different wavelengths and comprise first laser diodes, second laser diodes, third laser diodes, and fourth laser diodes; the number of the first laser diodes is 30 percentage or less of the total number of the laser diodes; and the number of the fourth laser diodes is 25 percentage or greater of the total number of the laser diodes.

The invention provides an intelligent cashmere doping content judgment system utilizing multi-mode Raman spectrum characteristics, and relates to the technical field of intelligent spectrum analysis. The cashmere doping content intelligent judgment system utilizing the multi-mode Raman spectrum characteristics comprises a data acquisition module, a multi-wavelength laser excitation unit is used for carrying out space scanning on a sample, time sequence Raman spectrums under different polarization configurations are synchronously acquired, and the time sequence Raman spectrums are analyzed; multi-dimensional original data including space coordinates, a time sequence, spectral intensity and a polarization state is formed, and an original multi-modal data set is generated. Through multi-wavelength laser space scanning and polarization time sequence synchronous acquisition, a multi-dimensional original data set containing space coordinates, a time sequence, spectral intensity and a polarization state is constructed, the dimension limitation of a traditional spectrum is broken through, and a three-dimensional convolution kernel is adopted to perform synchronous sliding processing in space and spectrum dimensions, so that the spectrum intensity and the polarization state are obtained. And the spatial distribution rule and multi-mode spectrum correlation characteristics of the doped region are directly captured.

The invention provides a method for intelligently adjusting laser power of a flow cytometer, which belongs to the technical field of flow cytometers, and comprises the following steps of: establishing a power coupling matrix, and establishing a double-layer game optimization model containing upper-layer laser power stability error minimization and lower-layer laser power interference minimization; a laser power decoupling prediction model based on a Transform architecture is applied to predict and optimize power coupling influence quantity, temperature coefficient parameters are dynamically adjusted to adapt to temperature changes of different lasers, power adjustment increments of the lasers are calculated, and double-layer optimization results are subjected to weighted fusion to obtain an optimal power adjustment strategy. The power value of each laser is adjusted according to the optimal strategy to realize multi-wavelength laser power decoupling control, and the technical problem that the detection precision of the flow cytometer is unstable due to mutual coupling interference of the power of the multi-wavelength lasers is solved.

The invention discloses a method for inverting a cloud condensation nucleus number concentration profile based on a laser radar and a neural network. The method comprises the following steps: collecting multi-wavelength laser radar data including a backscattering coefficient vertical profile, an extinction coefficient vertical profile, a laser radar ratio and a depolarization ratio; the method comprises the following steps: acquiring an atmospheric temperature profile and a water vapor mixing ratio profile which are in time-space synchronization with multi-wavelength laser radar data, performing grid alignment on a vertical height, and constructing a multi-channel input feature set for each preset target supersaturation ratio; and constructing a convolutional neural network profile inversion model, taking the multi-channel input feature set as input and the cloud condensation nucleus number concentration profile data as output, training the model, and obtaining the trained convolutional neural network profile inversion model. According to the method, the limitation of continuous, high-precision and high-temporal-spatial-resolution detection of CCN number concentration vertical distribution is overcome, and key data support is provided for the fields of weather forecast, climate models, artificial influence weather and the like.

The invention discloses a dual-wavelength frequency doubling regulation and control method based on a PPLN waveguide, and relates to the technical field of nonlinear optics. The method comprises the following steps: constructing a PPLN waveguide model, and determining a fundamental frequency light mode and a frequency doubling light mode; calculating effective refractive indexes of the fundamental frequency light and the frequency doubling light at respective wavelengths; the polarization period is calculated according to the effective refractive index, any target polarization period is fixed, the target polarization period is configured to correspond to two different working wavelengths at the same time, and therefore dual-wavelength frequency doubling light with a specific wave crest interval is generated at the output end of the waveguide; the wave crest interval is regulated and controlled by selecting different polarization periods; according to the invention, dynamic control of dual-wavelength frequency multiplication output is realized by changing the size of a polarization period; the single waveguide can complete various optical function design ideas, and has certain value for research in related fields such as multi-wavelength lasers and wavelength multiplexing communication.

This invention discloses an antimony compound multi-wavelength laser material, its preparation method, and its applications. It relates to the field of semiconductor laser technology and solves the problems of existing antimony compound-based semiconductor laser materials, such as difficulty in achieving multi-wavelength laser emission through single epitaxial growth, and the complex epitaxial processes, limited interlayer interface quality, and insufficient precision in composition control of existing multi-wavelength laser materials. The antimony compound multi-wavelength laser material provided by this invention comprises, from bottom to top, a substrate, a monolayer of graphene, a buffer layer, a lower confinement layer, a lower waveguide layer, a dielectric layer, a quantum well structure, an upper waveguide layer, an upper confinement layer, and a capping layer; wherein the quantum well structure includes In… x3 Ga 1‑x3 As y3 Sb 1‑y3 And Al x4 Ga 1‑ x4 As y4 Sb 1‑y4 Laser materials can be used to fabricate mid-infrared semiconductor lasers, achieving selective epitaxial growth, multi-channel spectral acquisition, and broadband coverage through single-epitaxy and controlled photolithography patterns.

In some implementations, an optical device (e.g., a monolithic master oscillator power amplifier (MOPA) diode) may include a first facet, one or more gratings, an amplifier structure terminated with a second facet, and an oscillator array that includes multiple singlemode oscillators coupled to the first facet and to the one or more gratings. In some implementations, the multiple singlemode oscillators may be configured to generate multiple seed beams and to transmit the multiple seed beams into the amplifier structure through the one or more gratings.

This application discloses a wavelength division multiplexing (WDM) system, device, WDM communication method, and medium, belonging to the field of wireless communication technology. A multi-wavelength laser is used to generate input light of different wavelengths; a WDM multiplexer is used to combine and modulate the input light to obtain channels with different wavelength intervals; a demultiplexer is used to demultiplex the narrow wavelength interval channels of the WDM multiplexer to increase the number of channels in the system. This application provides a blue-green WDM optical communication system and implementation method based on a demultiplexer, using blue-green light WDM technology to improve system capacity and achieve a high-bandwidth and moderate-attenuation wireless optical communication system. WDM visible light communication is achieved through a multiplexer / demultiplexer with fine wavelength intervals for visible light.

The application discloses a kind of self-adapting segmented gain multi-wavelength laser ranging method and system, method includes: multi-wavelength laser is under the control of trigger signal, laser pulse is emitted by emission optical system, trigger mode has synchronization, equal interval and coded emission.Laser echo is guided to detector by receiving system, and digital signal is generated after conversion by segmented gain module.Control processing module includes the information of ranging value, echo intensity in signal processing calculation.By self-adapting segmented gain, low magnification gain circuit is used to suppress strong signal in short distance, high magnification gain circuit is switched to improve weak signal detection ability in long distance, and step gain is formed by gain partition, and segmented area is adaptively adjusted to avoid distortion according to echo ranging value.Control processing module will complete data transmission.Near distance signal distortion and long distance signal missing detection are avoided, and system reliability and detection ability are improved.

The invention discloses a contour parameter detection system and process for a silicon single crystal crude wafer, and the system comprises a holographic projection scanning module which generates a composite light beam by adopting a multi-wavelength laser beam combination technology, and relates to the technical field of semiconductor material detection. According to the contour parameter detection system and process of the silicon single crystal coarse wafer, all-directional and multi-angle scanning of the silicon single crystal coarse wafer can be realized through the holographic projection scanning module, the whole surface and subsurface area are covered, and the problem of limited detection range in the prior art is effectively solved; the conditions of missing detection of a key area and incomplete coverage of a core area are avoided, and meanwhile, the quantum sensing detection module has extremely high detection sensitivity based on quantum entanglement and quantum interference principles, and can sense tiny magnetic field, electric field and stress changes on the surface and in the silicon single crystal crude wafer, so that microdefects are accurately detected, and the detection accuracy is improved. The problem of insufficient microdefect detection sensitivity in the prior art is solved.

A multi-wavelength laser includes an active layer and a diffraction grating layer that includes a front diffraction grating region, a rear diffraction grating region, and a phase shift region between the front diffraction grating region and the rear diffraction grating region. The front diffraction grating region includes one or more grating regions. Each of the one or more grating regions includes a series of unit structures that are different from each other. The rear diffraction grating region has the same structure as a structure of the front diffraction grating region.

The present disclosure is directed toward architectures that combine DWDM and CWDM concepts in a single PIC. Transmitter stages in accordance with the present disclosure include a plurality of multiwavelength lasers having regions of separately grown epitaxial material whose gain peaks are centered at different wavelengths. Each laser launches a wavelength comb comprising a plurality of wavelength signals into a PLC, where the wavelengths within each wavelength comb are separated by a wavelength spacing that is smaller than that between adjacent wavelength combs. In some embodiments, the PLC includes modulator banks for encoding data on the wavelength signals and combining them to produce a composite DWDM output signal. In some embodiments, a receiver stage is included for demultiplexing a composite DWDM input signal and detecting each wavelength channel within it. In some embodiments, the receiver stage employs polarization-diversity techniques to enable it to operate on unpolarized / randomly polarized input signals.

The utility model relates to the technical field of laser radars, in particular to an optical lens adjusting device of a multi-wavelength laser radar, which comprises a first reflecting assembly, a second reflecting assembly, a light condensing assembly and a signal transceiving assembly, the light condensation assembly is fixedly arranged in the signal receiving and transmitting assembly, the second reflection assembly is nested above the signal receiving and transmitting assembly, and the first reflection assembly is nested above the second reflection assembly; a first receiving cylinder and a first rotating unit are arranged in the first reflecting assembly, a second receiving cylinder and a second rotating unit are arranged in the second reflecting assembly, a first reflecting mirror is arranged in the first receiving cylinder, and a first optical filter is arranged in the second receiving cylinder. The first reflection assembly and the second reflection assembly form double receiving and transmitting ports, the first rotation unit is arranged in the first reflection assembly, and the second rotation unit is arranged in the second reflection assembly, so that multi-angle detection of the laser radar in a complex environment is facilitated, and the detection range and the detection efficiency are effectively improved.

A multi-wavelength semiconductor laser with flat power comprises an active gain area, a phase adjusting area, a filtering area, a gain flattening area and a reflecting area, the active area and a passive area are integrated on the same substrate, and one side of the active area is plated with a high-reflection film; a thermal adjusting electrode is manufactured on the phase region; manufacturing a micro-ring structure in the filtering area; a cascaded unbalanced Mach-Zehnder interferometer is manufactured in a gain flat region; and a Sagnac reflection ring is manufactured in the reflection region. When the gain region radiates photons under electric excitation, two mode selection mechanisms of the Fabry-Perot cavity and the micro-ring resonant cavity in the outer cavity act together, light with a specific wavelength is selected, amplitude regulation on different wavelengths is carried out through the Mach-Zehnder interferometer, and multi-wavelength laser output with high power flatness is formed through the resonant cavity. According to the multi-wavelength laser with the flattened power, the improvement of the signal-to-noise ratio and the reduction of the bit error rate in parallel optical information processing and optical communication are assisted, and the development of a novel intelligent information processing technology and large-capacity information transmission are promoted.

The application discloses a compact multi-wavelength laser, which comprises a pump module, a shaping module, a first resonant cavity mirror, a first crystal, a second crystal, a Q-switching module and a second resonant cavity mirror arranged along an optical path; the shaping module is used for beam shrinking and collimation of pump light; the second crystal is used for generating excitation light, frequency-doubled light, signal light and idler light after receiving the pump light; the first crystal is used for polarizing the excitation light; the first resonant cavity mirror and the second resonant cavity mirror constitute a resonant cavity of the compact multi-wavelength laser; the second crystal further comprises a temperature control module connected thereto, so that the second crystal with a polarization period Lambda is maintained at a temperature T, which can simultaneously generate the frequency-doubled light, the signal light and the idler light in the resonant cavity.

This provides a multi-wavelength laser that emits multiple wavelengths using a single semiconductor laser. [Solution] The multi-wavelength laser comprises an active layer 103 and a diffraction grating layer having a forward diffraction grating region 161, a backward diffraction grating region 162, and a phase shift region 109 between the forward diffraction grating region and the backward diffraction grating region, wherein the forward diffraction grating region includes one or more grating regions, each of which includes a series of different unit structures, and the backward diffraction grating region has the same structure as the forward diffraction grating region.

The invention discloses a multi-wavelength laser mode adaptive switching method and system for a depression model, and relates to the technical field of laser adaptive switching. The multi-wavelength laser mode adaptive switching method and system for the depression model comprises the following steps: S1, constructing a multi-source stimulation data set, and performing quality marking and normalization processing; s2, constructing an equipment channel characteristic parameter set, and performing online correction and stability evaluation; s3, generating an equipment compensation stimulation sequence, and performing multi-wavelength laser mode adaptive switching and compensation; and S4, carrying out multi-source stimulation data full-link association and blood relationship management. According to the invention, the consistency of multi-wavelength laser stimulation output among multiple devices and the repeatability of depression model experiment conditions are effectively improved, and the problem that the physical output of the same stimulation scheme on different experiment devices is inconsistent is solved.

The invention discloses a flat low-noise multi-wavelength laser generation system and method based on a Brillouin cavity. The system comprises a multi-wavelength pumping laser generation branch, a Brillouin optical fiber ring cavity and a frequency shift injection locking branch. The multi-wavelength pumping laser generation branch is used for generating and outputting flat multi-wavelength pumping laser and comprises a first distributed feedback laser, a first polarization controller, a first optical fiber circulator, a first multi-wavelength generator and a spectrum shaper; and the Brillouin optical fiber ring cavity is connected with the multi-wavelength pumping laser generation branch and the frequency shift injection locking branch through a second circulator, and is used for generating and finally outputting multi-wavelength Brillouin laser. The invention generates multi-wavelength laser with the advantages of low noise, flat spectrum and the like, and is suitable for application scenes of low-phase noise signal generation, high-dynamic range signal processing and the like in a microwave photon system.

The invention discloses a weak fiber bragg grating array ultrafast demodulation system and method based on a laser array, and relates to the technical field of sensing, the system comprises a multi-wavelength laser array module, an optical beam splitter, an optical circulator, a weak fiber bragg grating array, a first photoelectric conversion module, a second photoelectric conversion module and a signal processing module; the output end of the multi-wavelength laser array module is connected with the input end of the light beam splitter, and the multi-wavelength laser array module integrates N wavelength channels; a first output end of the optical beam splitter is connected with the first photoelectric conversion module, and a second output end is connected with a first port of the optical circulator; a second port of the optical circulator is connected with the weak fiber grating array, and a third port is connected with the second photoelectric conversion module; the weak fiber bragg grating array comprises M weak fiber bragg gratings which are connected in series; and the output ends of the first photoelectric conversion module and the second photoelectric conversion module are connected to the signal processing module. According to the invention, ultra-high-speed demodulation can be carried out on M weak fiber gratings at the same time, and wavelength demodulation is realized.

The invention discloses a few-mode optical fiber multi-wavelength and multi-mode mixed mode decomposition device and decomposition method based on multi-wavelength lensless coherent modulation imaging, and the method comprises the steps: exciting a few-mode optical fiber to be detected through a multi-wavelength laser source, and modulating a mixed wavelength light field outputted by the optical fiber through a binary random amplitude plate; a single-frame diffraction pattern is collected by a detector; simultaneously reconstructing complex amplitude distribution of each wavelength component in a modulation plane from a single diffraction pattern by using a low-rank mixed state reconstruction algorithm containing frequency domain constraint; then constructing and calculating a virtual 4f system, and propagating a complex amplitude value of the modulation plane to an optical fiber end face to obtain amplified optical fiber end face complex amplitude distribution; and finally, space alignment is optimized in combination with a gradient descent algorithm, and modal coefficients under all wavelengths are extracted through modal projection. According to the method, the limitation that a traditional method can only perform single-wavelength analysis or is influenced by dispersion is overcome, and rapid, accurate and calibration-free decomposition of a multi-wavelength and multi-mode optical fiber light field under single exposure is realized.

The invention relates to the technical field of laser wireless energy transmission, in particular to a multi-wavelength laser adaptive matching and power optimization system and method. The technical problem to be solved is low photoelectric conversion efficiency caused by fixed power output in a multi-wavelength laser, and the multi-wavelength laser cannot adapt to dynamic environment changes. According to the technical scheme, the system comprises a multi-wavelength laser transmitting end (such as 808nm, 532nm and 980nm lasers), a photovoltaic receiving end (such as a multi-junction photovoltaic cell (such as GaInP / (In) GaAs / Ge), a sensor network and a self-adaptive control unit. Response characteristics of a photovoltaic cell to each wavelength are monitored in real time, and the output power of the laser is dynamically adjusted by adopting an optimization algorithm, so that the photoelectric conversion efficiency is maximized. The system has the beneficial effects that the system efficiency is improved by 20-35%, the heat loss is reduced, the adaptability is high, and the system is suitable for unmanned aerial vehicle charging and space energy stations.

The invention discloses a three-dimensional light sheet fluorescence microscopic imaging device without mechanical motion and an imaging method, and solves the problems that a galvanometer affects the imaging quality and limits the imaging speed, the image post-processing process is complicated, the image processing time and cost are increased, and the imaging efficiency is high. The device comprises a multi-wavelength laser source, a light field regulation and control light sheet generation and movement module, a double-objective lens and sample box module, a deformable mirror focusing module and a wide-field imaging module which are sequentially arranged along a light path, according to the three-dimensional light sheet fluorescence microscopic imaging device without mechanical motion, generation and axial movement of the illumination light sheet are realized by utilizing a pure optical method, the complexity of the three-dimensional light sheet fluorescence microscopic imaging device without mechanical motion is reduced, the environmental interference resistance is improved, and various different types of illumination light sheets can be flexibly and dynamically generated to meet different imaging scenes.

Methods, device and systems for producing images using optical fibers are described that utilize synthetic wavelength imaging. An example method for determining one or more characteristics of an object includes providing a multiwavelength laser illumination to a multi-mode optical fiber, where the illumination includes distinct first and second wavelengths. At least a portion of the laser illumination after interactions with the object is received. The detector is also illuminated by reference beams that include the first and the second wavelengths. Based on signals detected by the detector, amplitude or phase values associated with a synthetic wavelength are determined which enable determination of the object characteristics. The synthetic wavelength is inversely proportional to a difference between the two wavelengths, which are selected such that optical path variations due to propagation of the laser illumination through the optical fiber are less than a fraction of the synthetic wavelength.

The invention belongs to the technical field of laser, and provides a time sequence synchronous multi-wavelength pulse laser output device, which comprises a plurality of groups of optical gain modules, each group of optical gain modules comprises a blazed grating and a laser gain tube, each blazed grating is configured to reflect incident light with a set wavelength into the laser gain tube, and each blazed grating is configured to reflect the incident light with the set wavelength into the laser gain tube. Each group of light splitting gain modules are used for forming laser with different wavelengths; the acousto-optic modulator is configured to enable the multiple groups of gained multi-wavelength lasers to be incident to the acousto-optic modulator to meet the Bragg condition and then enable the pulse lasers to be synchronously output in time sequence, and at least every two groups of lasers are incident to the same position of the acousto-optic modulator; each group of output mirrors is plated with a semi-transparent and semi-reflective film and forms a resonant cavity with one group of blazed gratings, a laser part returns to the laser gain tube through the output mirrors along the same path and forms resonance with the blazed gratings, and a laser part is transmitted through the output mirrors; and the beam combining grating is used for combining the pulse lasers with different wavelengths and then outputting the combined pulse lasers at the same emergent angle.

The invention belongs to the technical field of laser, and discloses a feedback type multi-wavelength laser shaping and amplifying structure based on a multistage frequency doubling crystal fiber, which comprises a laser source unit, a selective frequency doubling unit, a feedback type laser shaping unit and a multi-wavelength gain amplifying unit, the coupling output end of the selective frequency doubling unit is in butt joint with a first port of an optical fiber circulator in the feedback type laser shaping unit, a second port of the optical fiber circulator is in butt joint with one end of an optical fiber waveform shaper, and a third port of the optical fiber circulator is in butt joint with the input end of the multi-wavelength gain amplification unit. Laser output by the laser source unit is subjected to selective frequency conversion through the selective frequency doubling unit, then is subjected to twice waveform Gaussian shaping through the feedback type laser shaping unit, and is subjected to laser power or energy compensation and amplification through the multi-wavelength gain amplification unit. The device is simple in structure and high in expansibility, modulates the laser frequency, improves the multi-wavelength laser waveform and improves the multi-wavelength laser output energy.

The application discloses a kind of multi-channel laser transmitter anti-radiation test device applied to space environment, it is related to wireless high-speed laser communication technical field, including: first test computer, electric signal generator, multi-channel space laser transmitter, radiation test box, second test computer, dense wavelength division multiplexer, 1x2 optical switch, adjustable optical attenuator, optical spectrum analyzer, demultiplexer, Nx1 matrix switch, beam splitter, optical power meter, adjustable optical attenuator and eye diagram instrument.The application adopts a set of test platform to test the performance parameters of multi-wavelength laser output in real time, cooperates with electric signal generator, dense wavelength division multiplexer, to reduce the system complexity of single parameter independent test, simplifies test optical path, reduces test time, improves test efficiency, improves the stability and reliability of test system.

The invention discloses an optical fiber device and a preparation method thereof, a laser and equipment, the optical fiber device comprises an output optical fiber, a graded-index optical fiber and an output head which are connected in sequence, and the output optical fiber comprises a fiber core and a cladding and is used for outputting a point loop light beam; the graded-index optical fiber is used for adjusting the light path of the point-loop light beam to adjust the divergence angle of the inner and outer-loop light beams; and the output head is used for outputting the adjusted light beam. By combining the inherent beam shaping characteristic of the graded-index optical fiber, effective and flexible regulation and control of the divergence angle of the output light are realized, and the device is especially suitable for a multi-wavelength laser output scene, and has the advantages of simple structure, low cost and high stability.

The invention discloses a multi-channel ultraviolet and visible light laser output module based on a super-continuum spectrum light source. A light path sequentially comprises a super-continuum spectrum light source, a diaphragm, a visible light low-pass filter and a polarization splitting prism. The prism divides the filtered visible light into a first light path and a second light path. The first light path is sequentially subjected to focusing of the first lens, frequency conversion of the nonlinear optical crystal, collimation of the second lens and filtering of the first dichroscope, and then ultraviolet frequency doubling light is output through the first optical window. The second light path is used for outputting at least one path of visible light and can further separate multiple paths of visible light with different wavelengths through the light splitting element. The light splitting element can be composed of a dichroscope and a reflecting mirror. According to the invention, the single super-continuum spectrum light source is used, stable and cooperative output of ultraviolet and multi-path visible light laser is realized in a compact module, so that the problems of complex structure, poor synchronism and low spectrum utilization rate of a traditional multi-wavelength laser system are effectively solved.

The invention discloses a cuttable multi-wavelength composite high-power laser light path device, and belongs to the field of multi-wavelength lasers. The device comprises a light source module, an intracavity beam combining module, an output feedback mirror, a collimation module, an optical fiber transmission module, an output focusing lens, a correction lens and a signal generator, the light source module, the intracavity beam combining module and the output feedback mirror form a resonant cavity; the light source module is provided with N lasers with different wavelengths; the intra-cavity beam combining module is provided with N light path regulation and control elements; the light path regulation and control element is used for regulating and controlling the laser with different wavelengths to obtain composite wavelength laser; the collimation module collimates the composite wavelength laser; the collimated laser is output after being transmitted by the optical fiber transmission module; the output focusing lens and the correction lens are used for focusing the composite wavelength laser; the correction lens is a nonlinear material lens with a variable focal length, can compensate the dispersion of the output focusing lens, and focuses the light beams with different wavelengths to one point under the combined action. And multi-wavelength composite high-power laser output with adjustable light spots is realized.