42 results about "High power lasers" patented technology

The disclosure provides a laser, a preparation method of the laser and an optical module, and relates to the technical field of optical elements, so as to meet the demand of the optical module for high-power lasers. The laser comprises the following steps: growing an etching auxiliary layer on the surface of a wafer body of the laser, the longitudinal etching rate of the wafer body is greater than the transverse etching rate of the wafer body, the transverse etching rate of the etching auxiliary layer is greater than the transverse etching rate of the wafer body, and the wafer body comprises a quantum well layer; forming a mask layer above the etching auxiliary layer, and pre-treating the mask layer to form a BH pattern; etching the BH pattern, so that the top of the wafer body is etched into a BH mesa, the etching depth is below the quantum well layer, and the etching depth is below the quantum well layer; growing a current blocking layer on both sides of the BH mesa; removing the mask layer and the etching auxiliary layer; and forming a P-InP layer on the top of the BH mesa and the current blocking layer.

The application belongs to the technical field of laser optics, and particularly relates to a heat distortion resistant mirror seat for a high-power laser system; the mirror seat comprises a seat body, a plurality of convex bosses for limiting a mirror are arranged on the inner side wall of the seat body, a contact plate for bearing the mirror is arranged in the frame of the seat body, a group of heat dissipation fins are arranged on the bottom of the contact plate, flexible grooves and threaded holes are respectively arranged in the frame of the seat body at positions corresponding to the convex bosses, a flexible pressing ring is fixed to the top end of the seat body through the threaded holes and is used for pressing the mirror, mounting holes corresponding to the threaded holes are arranged on the flexible pressing ring, and a flexible groove of the pressing ring is arranged on the inner side of each mounting hole; the application is suitable for the working condition that the temperature of the mirror continuously rises, can effectively reduce the temperature level of the mirror, and effectively solves the mirror surface shape distortion problem caused by the fact that the mirror seat extrudes the mirror due to the mismatch of the thermal expansion coefficients of the mirror seat and the mirror.

The utility model provides a series-parallel connection structure of optical isolation driving semiconductor switches, which relates to the field of semiconductor switches and comprises a plurality of groups of optical isolation driving semiconductor switches and a plurality of series-parallel connection metal plates, and the series-parallel connection metal plates enable the optical isolation driving semiconductor switches in the same group to be connected in series. The series and parallel metal plates connect the plurality of groups of optical isolation driving semiconductor switches in parallel; the driving boards are connected through a plurality of driving board supporting columns, and each driving board comprises a driving module and a photoelectric conversion module; according to the scheme, the laser array module is driven by using the laser array as the light source of the optical isolation driving semiconductor switch, and the optical isolation driving semiconductor switch can be driven by using the received optical signal from the laser array module. Energy optical fibers and high-power lasers are not needed, the application cost of the optical isolation driving semiconductor switch is remarkably reduced, and the economical efficiency of the optical isolation driving semiconductor switch is further improved.

The application provides a mirror thermal management mechanism and heat dissipation method for a high-power laser processing head, and belongs to the technical field of laser processing. The mirror thermal management mechanism comprises a galvanometer mirror module and a thermal management module. The galvanometer mirror module comprises a galvanometer mirror. The galvanometer mirror comprises a substrate, a first optical film layer and a second optical film layer. The substrate is transparent to working wavelength laser and has opposite first and second surfaces. The first optical film layer is arranged on the first surface and is used for reflecting laser incident on the first surface. The second optical film layer is arranged on the second surface and is used for transmitting laser transmitted through the substrate out of the second surface. The thermal management module comprises a liquid cooling plate. The liquid cooling plate has a light absorption surface and is arranged in a spaced manner with the second surface. The thermal management mechanism can meet the thermal management requirements of the galvanometer mirror in the high-power laser welding process.

The present application relates to an eye safety interlock for fiber coupled high power laser sources. A system is presented for continuously monitoring the integrity of the delivery fiber coupled to the laser source and shutting down the laser source immediately upon identifying any type of cut, break or disconnection along the delivery fiber. A pair of monitoring photodiodes are included with the laser source and used to observe the ratio of reflected light to emitted light, and if this ratio exceeds a given threshold, the laser is shut down. If there is a break, the power of the reflected light will be higher than normal, where a defined threshold is used to determine the calculated intensity indicative of the break. By using a measurement in decibels, the monitoring system only needs to employ the intensity difference to produce the reflected / delivery ratio output.

The application discloses a kind of high-power laser seed sources for multimodal medical imaging based on germanium saturable absorber, it is characterized in that, including first pump light source, second pump light source and laser resonator, the laser resonator is by first wave division multiplexer, second wave division multiplexer, erbium-doped optical fiber, polarization controller, polarization independent isolator, germanium saturable absorber, single-mode optical fiber, optical coupler sequentially connected, the first pump light source is connected with first wave division multiplexer, and second pump light source is connected with second wave division multiplexer.The germanium saturable absorber prepared in the application has good self-starting effect on pulse, the preparation method is simple, and the preparation cost is not high.And the stability of the obtained saturable absorber is good, and it can be used for passive mode locking for a long time.

The disclosure provides a laser, a preparation method of the laser and an optical module, and relates to the technical field of optical elements, so as to meet the demand of the optical module for high-power lasers. The laser comprises a current blocking layer, and the current blocking layer comprises a P-InP blocking layer, an impurity freezing layer, a first N-InP blocking layer and a second N-InP blocking layer. The method comprises the following steps: introducing a first doping source into an epitaxial growth chamber to form the P-InP blocking layer on both sides of a BH mesa; stopping the introduction of the first doping source and reducing the temperature of the epitaxial growth chamber to a first preset temperature; introducing a second doping source into the epitaxial growth chamber, so that the second doping source penetrates into the surface at the top of the P-InP blocking layer, the top of the P-InP blocking layer is processed to form the impurity freezing layer, and the first N-InP blocking layer is formed above the impurity freezing layer; and the second N-InP blocking layer is formed above the first N-InP blocking layer.

The application discloses a manganese-activated fluoride red fluorescent ceramic and a preparation method and application thereof. The manganese-activated fluoride red fluorescent ceramic is prepared by uniformly mixing manganese-activated fluoride red fluorescent powder (or a manganese-activated fluoride matrix and a fluoromanganate) and an additive, then cold-pressing and sintering, and cooling; or the manganese-activated fluoride red fluorescent ceramic is prepared by cold-pressing and sintering manganese-activated fluoride red fluorescent powder (or a manganese-activated fluoride matrix and a fluoromanganate), and cooling. The manganese-activated fluoride red fluorescent ceramic prepared by the application has high light transmittance, can be effectively excited by ultraviolet light, near-ultraviolet light and blue light, emits narrow-band red light of about 630 nm, has an absorption efficiency of blue light greater than 70%, and has an external quantum efficiency greater than 60%. The preparation process of the red fluorescent ceramic is simple, the conditions are mild, the universality is wide, the cost is low, and the red fluorescent ceramic can be applied to the fields of white light LED and high-power laser devices.

The application provides a GaAs high-power laser epitaxial wafer with strain compensation quantum well structure and a preparation method thereof, and belongs to the field of optoelectronics. From bottom to top, the epitaxial wafer comprises a buffer layer, an N confinement layer, an AlGaAs lower waveguide layer, an AlGaAs lower barrier layer, a GaAsP quantum well layer, a GaAs barrier layer one, an InGaAs quantum well layer, a GaAs barrier layer two, a GaAsP quantum well layer, an AlGaAs upper barrier layer, an AlGaAs upper waveguide layer, a P confinement layer and a GaAs ohmic contact layer. The application adds a quantum well larger than the band gap width before and after the quantum well of the epitaxial structure, completes the strain compensation of the quantum well by only using a mode within 10 nm, and further concentrates the light field in the InGaAs quantum well by using the refractive index difference, so that the optical gain of the quantum well is improved. The application completely makes up for the problems of the wide waveguide structure, such as the poor divergence angle and beam quality under the premise of high power.

The invention provides methods and apparatus comprising a laser source that uses a single unfocused pulse of a low intensity but high power laser over a large sample area to collect Raman scattered collimated light, which is then Rayleigh filtered and focused using a singlet lens into a stacked fiber bundle connected to a customized spectrograph, which separates the individual spectra from the scattered wavelengths using a hybrid diffraction grating for collection onto spectra-specific sections of an array photodetector to measure spectral intensity and thereby identify one or more compounds in the sample.

The application discloses a kind of nonlinear characteristic measuring device and test method suitable for thick sample, by light power density equivalence method, the light power density required for exciting thin sample nonlinear characteristics by small power laser beam is equivalent with the light power density required for exciting thick sample nonlinear characteristics by high power laser beam, to realize the purpose of thick sample nonlinear characteristics, such as nonlinear absorption coefficient and nonlinear refractive index measurement.The application adopts long focal length lens focusing, which not only meets the establishment condition of Z scanning and I scanning theory, but also can realize the complement of complete nonlinear characteristic curve.The application is composed of six parts, including laser output unit, energy attenuation unit, beam shaping unit, sample displacement unit, energy detection unit and computing processing unit, which can realize the nonlinear characteristic measurement of optical material with larger thickness range in wide waveband (such as 315nm-11μm), greatly enriching and facilitating the research in the field of material nonlinear.

The disclosure provides a laser, a preparation method of the laser and an optical module, and relates to the technical field of optical elements, so as to meet the demand of the optical module for high-power lasers. The laser comprises the following steps: growing an etching auxiliary layer on the surface of a wafer body of the laser, the longitudinal etching rate of the wafer body is greater than the transverse etching rate of the wafer body, the transverse etching rate of the etching auxiliary layer is greater than the transverse etching rate of the wafer body, and the wafer body comprises a quantum well layer; forming a mask layer above the etching auxiliary layer, and pre-treating the mask layer to form a BH pattern; etching the BH pattern, so that the top of the wafer body is etched into a BH mesa, the etching depth is below the quantum well layer, and the etching depth is below the quantum well layer; growing a current blocking layer on both sides of the BH mesa; removing the mask layer and the etching auxiliary layer; and forming a P-InP layer on the top of the BH mesa and the current blocking layer.

The utility model discloses an embodiment of a kind of heat dissipation device and laser for laser, the heat dissipation device includes pumping source pedestal and liquid cooling plate, pumping source pedestal is used to place laser chip, liquid cooling groove is opened in liquid cooling plate, pumping source pedestal includes pedestal body, and the several radiating fins of setting on pedestal body, pumping source pedestal is attached to liquid cooling plate, and make several radiating fins be inserted in liquid cooling groove, pumping source pedestal and the groove wall of liquid cooling groove are enclosed to form liquid cooling passage, cooling liquid is circulated in liquid cooling passage, therefore, the heat generated by laser chip can be promptly transferred to radiating fin, and then again through radiating fin transfer to cooling liquid in liquid cooling passage, so that the heat of radiating fin can be promptly taken away by cooling liquid, cooling mode using liquid cooling, high heat dissipation efficiency, so that heat dissipation device can satisfy higher power laser chip heat dissipation demand.

The utility model relates to a high-power laser lighting device comprising a plurality of high-power laser sources, each high-power laser source is provided with a laser transmission optical fiber, and each laser transmission optical fiber is provided with a transmitting end face; the optical fiber bundle assembly is formed by combining a plurality of laser transmission optical fibers, and each laser transmission optical fiber is surrounded by a sheath; the fly's-eye lens array is installed in the frame and composed of a plurality of sub-lenses, the sub-lenses are closely arranged, each laser transmission optical fiber in the optical fiber bundle assembly corresponds to one sub-lens in the fly's-eye lens array, and a laser beam output by each laser transmission optical fiber is coaxial with the optical axis of the corresponding sub-lens in the fly's-eye lens array. The frame on which the fly-eye lens array is mounted is adjustable relative to the transmitting end face to output an illumination beam having a predetermined divergence angle. The divergence angle of an output light beam can be freely adjusted in different illumination applications; the mixed divergence angle of the output light beam, the mixed output light beam and the light spot morphology are realized; and the output efficiency is higher.

The application discloses a high-power laser fiber strong heat dissipation mounting process, which comprises the following steps: S1, preparing a metal heat dissipation plate, machining a fiber mounting groove on the surface of the metal heat dissipation plate, and quickly vacuum cleaning and packaging the metal heat dissipation plate after the machining; S2, preparing a fiber and a filler prepared from metal powder, arranging the fiber in the fiber mounting groove of the metal heat dissipation plate, covering the filler on the fiber, then placing the metal heat dissipation plate on a heat radiation platform of a vacuum brazing furnace, and closing the vacuum brazing furnace; S3, first vacuumizing the vacuum brazing furnace to at least 2.4X10 ‑5 Pa, then heating the heat radiation platform to 240-260 DEG C, and keeping the temperature for 4 hours; and S4, after the internal temperature of the vacuum brazing furnace decreases to 80 DEG C, introducing atmosphere, and taking out the metal heat dissipation plate and the fiber as a whole after the brazing is completed. The process can significantly improve the heat dissipation efficiency of the fiber, and provides a solid technical foundation for large-scale development and application of high-power lasers.

The laser process uses a laser beam for cutting, brazing, welding or other operations on different materials, and the laser uses elements of the system for positioning, such as discrete adjustment of the positioning elements or dynamic movement of the laser head. For systems using high-energy laser, the elements, including elements that facilitate movement, may encounter a thermal problem. An optical head for a high power laser cutting system is disclosed herein. In the disclosed system, the optical head includes a focus lens having a focal length shorter than a desired working distance of the system. Further disclosed is a system using such an optical head, allowing for desired positioning of the focus and magnification of the image of the system. The use of the disclosed laser heads within high power laser systems may allow for reduced thermal loading and contamination to sensitive components.

The invention relates to the technical field of semiconductor lasers, in particular to a high-power laser based on a multi-PN junction Bar strip, and the multi-PN junction Bar strip comprises a Bar strip substrate, a PN junction array, a contact layer and an insulating layer. The PN junction array is composed of PN junction units, and each PN junction unit is formed by superposing epitaxial basic units of a hierarchical structure; the epitaxial basic units are connected through tunneling layers; the contact layer is arranged on the top surface of the PN junction unit; the insulating layers are arranged on the side surfaces of the PN junction units and are used for isolating the adjacent PN junction units; and the Bar substrate is used for carrying the PN junction array, the contact layer and the insulating layer. Through the stacked epitaxial basic units, the series integration of the luminous points in the epitaxial growth direction is realized, and by combining the traditional parallel integration of the transverse luminous points, the spectral distribution is more uniform, the number of Bar chips and the number of heat sinks can be reduced, and the advantages of component cost and production efficiency are achieved.

This invention discloses a manganese-activated organic-inorganic hybrid fluoride red fluorescent ceramic, its preparation method, and its applications. The invention obtains the manganese-activated organic-inorganic hybrid fluoride red fluorescent ceramic by cold pressing and sintering the manganese-activated organic-inorganic hybrid fluoride red phosphor, followed by cooling; or by uniformly mixing a manganese-activated organic-inorganic hybrid fluoride matrix and fluoromanganate, followed by cold pressing and sintering, and then cooling. The manganese-activated organic-inorganic hybrid fluoride red fluorescent ceramic prepared by this invention has high transparency and can be effectively excited by ultraviolet, near-ultraviolet, and blue light, emitting high-purity narrow-band red light at approximately 631 nm. It exhibits high absorption efficiency for blue light and high luminous efficiency, making it suitable for applications in white LEDs and high-power laser devices. The preparation process of the red fluorescent ceramic of this invention is simple, mild, widely applicable, and low-cost.

The invention provides a laser, a preparation method thereof and a laser system, and relates to the technical field of photoelectricity, and the laser comprises an epitaxial structure and a ridge waveguide. Wherein the epitaxial structure comprises an active layer; the ridge waveguide is located on the epitaxial structure and extends in the first direction, and the size of the ridge waveguide in the second direction is smaller than that of the active layer in the second direction; the ridge waveguide comprises a first sub-part and second sub-parts arranged on the two sides of the first sub-part in the second direction, and the part, close to the first sub-part, of each second sub-part comprises a first ion implantation damage structure. According to the scheme, the first ion implantation damage structures are arranged on the second sub-parts on the two sides of the ridge waveguide, the physical difference of light field distribution of a fundamental mode and a high-order mode is utilized, selective absorption of the high-order mode and effective limitation of current diffusion are achieved under the condition that the ridge waveguide is widened, and on the premise that an additional structure is not introduced, the effective absorption of the high-order mode is achieved. And stable output of the fundamental mode of the high-power laser is ensured.

The application discloses a uniform light optical system and a processing head based on multiple fiber output laser modules, which comprises multiple fiber output laser modules, an imaging lens and a light splitting component; the fiber output end faces of the multiple fiber output laser modules are arranged in a plane according to a certain rule; the imaging lens comprises at least one lens and is located on the output light path in the light emitting direction of the fiber output end faces of the laser modules; the light splitting component comprises at least one spatial angle or position light splitting device, and the light splitting devices are independently arranged before the imaging lens, after the imaging lens or between the lenses of the imaging lens; the application directly shapes and uniformly lightens through the optical system by using multiple small-power laser modules, avoids using high-power lasers, thus avoiding the combiner problem in the prior art, reducing the cost and improving the reliability.

The application discloses a high-power laser electric vector locking method and device, and relates to the technical field of lasers.The device comprises a collimator which receives laser generated by a laser through an optical fiber to form incident laser; the incident laser sequentially passes through an executing element module and a beam splitting detection module to obtain a feedback signal and send the feedback signal to a control processing module; the control processing module processes the feedback signal to generate a servo control instruction and send the servo control instruction to the executing element module; and the executing element module executes the servo control instruction to realize real-time closed-loop control of the high-power laser electric vector.The application realizes precise locking of the electric vector of laser with any intensity, and is especially suitable for a high-power and high single-photon energy laser system in which an electrically-controlled optical fiber attenuating device cannot be used, and has the characteristics of high precision, high speed and high sensitivity.

The application discloses a magnetic control composite phase change heat exchange system and method for a high-power laser, which comprises a gain medium layer, a composite phase change material layer wrapped around the periphery of the gain medium layer, the composite phase change material layer being composed of a base phase change material and magnetic nano-particles, the magnetic nano-particles being arranged in a direction under the action of a magnetic field to form a heat conduction chain, a micro-channel embedded in the composite phase change material layer and provided with a liquid cooling working medium, an annular Halbach array layer sleeved around the periphery of the composite phase change material layer, an elastic buffer isolation layer arranged between the annular Halbach array layer and the composite phase change material layer, a temperature detection unit for detecting the temperature of the gain medium layer, and a magnetic field control unit matched with the annular Halbach array layer to control the flow speed and trajectory of the magnetic nano-particles. The application adopts a "magnetic control-phase change-liquid cooling" cooperative heat exchange mode to solve the technical problems of high heat flux, poor heat uniformity and space limitation of the high-power laser.

The application discloses a kind of narrow linewidth high-power lasers integrated on chip, all structures of the device are integrated on the same photonic integrated chip, including semiconductor laser, optical power distribution unit, coupling straight waveguide, micro-ring resonant cavity and Sagnac on-chip mirror in sequence, wherein: semiconductor laser: as light source, generates initial laser.Light path power distribution unit: laser is divided into two ways-one is directly led out as output light, another enters subsequent feedback loop as feedback light.Coupling straight waveguide: feedback light is coupled into micro-ring resonant cavity.Micro-ring resonant cavity: as main resonant unit, for realizing the core resonance of self-injection locking.By using the application, by designing special light path power distribution structure, the power distribution of feedback light and output light is accurately controlled, and stable output of narrow linewidth high-power laser is realized.The application can be widely applied in the technical field of semiconductor laser.

The application belongs to the technical field of semiconductor lasers, and discloses an elliptical ridge waveguide laser and a preparation method thereof. The elliptical ridge waveguide laser comprises a laser body, a ridge structure of the laser body is an elliptical ridge waveguide structure, and a top surface of the elliptical ridge waveguide structure is in an elliptical shape. The top surface of the elliptical ridge waveguide structure satisfies an elliptical equation, a distance between two foci of the top surface elliptical of the elliptical ridge waveguide structure is the same as a cavity length of the laser body, and a length of a minor axis of the top surface elliptical of the elliptical ridge waveguide structure is less than a width of a top surface of an epitaxial substrate of the laser body. The elliptical ridge waveguide structure is formed through photolithography and etching. The application solves the problems of high optical cavity gain, low threshold current, single-mode high power, and low polarization ratio laser manufacturing difficulty, and provides reliable technical support for commercial and industrial applications of high-power lasers.

The invention provides a safety optical fiber suitable for a high-power laser, and belongs to the technical field of safety protection optical fibers for high-power laser transmission, the safety optical fiber comprises a multi-mode energy transmission optical fiber body, a polyimide coating is arranged on the outer side of the multi-mode energy transmission optical fiber body, and no less than one copper wire is embedded in the polyimide coating. Two ends of the copper wire extend to a joint part of the multimode energy transmission optical fiber body and are electrically connected with a circuit of a high-power laser machine; the multimode energy transmission optical fiber body is a passive multimode quartz energy transmission optical fiber or an active doped optical fiber with a wavelength adaptation range of 190 nm to 2400 nm. The copper wire is embedded in the polyimide coating of the multimode energy transmission optical fiber for the high-power laser and is connected with the laser circuit, so that the copper wire is fused to actively interrupt the laser circuit when the optical fiber is broken or a connection fault occurs, high-energy laser is prevented from leaking from the source, surrounding people or objects are protected from radiation damage, and the service life of the laser is prolonged. And meanwhile, the requirements of lasers with different powers are met.

The utility model relates to an optical fiber output head of a high-power laser, which sequentially comprises a dodging rod, a first lens, a plurality of second lenses arranged on a lens fixing seat and a plurality of insertion cores axially corresponding to the second lenses respectively from the front end to the rear end, an optical fiber is inserted in each insertion core, the positions of the first lens and the plurality of second lenses are set as follows: the combined focus of the second lenses and the first lens and the focus of the first lens are both on the rear end surface of the light homogenizing rod, and the first lens focuses light from the plurality of second lenses to the rear end of the light homogenizing rod. According to the utility model, the large lens and the uniformly distributed small lenses are matched for use, so that small-size light spots can be obtained; meanwhile, glue is not used in the insertion core, so that the temperature of the output head is obviously reduced, the temperature rise caused by the glue contained in the output head is avoided, and the problem that the insertion core head is cracked due to more heat generated by high-power laser is avoided.

A downhole tool includes a milling rotary body, a fiber optic cable extending through the milling rotary body, one or more milling knives extending outwardly from the milling rotary body at an end of the milling rotary body, and a laser head extending from the second end of the milling rotary body. The fiber optic cable is connected to the laser head, and the laser head is configured to rotate about a central axis of the milling rotary body.

The application discloses a high-power laser shutter based on wedge-shaped mirror tuning laser beam quality, which comprises an input end, a collimating mirror, a reflecting mirror and a light receiver arranged in sequence along a laser input light path, at least two switches and a light receiver arranged in sequence along a light path reflected by a front surface of the reflecting mirror, and a focusing mirror and an output end arranged in sequence along a light path reflected by a front surface of each switch, wherein each switch comprises a plurality of wedge-shaped mirrors capable of cutting into the light path, and a plurality of output ends output laser beams alternatively or at least two output ends output laser beams simultaneously.

The application discloses a kind of high-power laser parameter measuring system and method in laser nuclear fusion device target chamber, solve the technical problems such as existing measurement method easy to damage measuring instrument, and measurement efficiency and measurement result accuracy are lower.The measuring system includes carrying unit, multi-joint steering unit, detector and main control unit;Carrying unit is vacuum cavity inside, one end is inserted into target chamber, the other end is installed at corresponding position in target field, and is connected with external vacuum pump;Multi-joint steering unit is located in target chamber, one end is fixed end, and is connected with the one end of carrying unit inserted into target chamber;The other end is free end, for installing detector;Multi-joint steering unit is equipped with filter hole being communicated with target chamber, and filter hole is opposite the center of detector target surface, for filtering out to-be-measured laser beam, so that it is received by detector;Detector is used to collect the parameter information of to-be-measured laser beam and transmit to main control unit.

The application provides a high-power laser cleaning head, which comprises a shell assembly, a collimating mirror module, a galvanometer mirror module, a field lens module and a protection mechanism, the shell assembly has a shell and a heat dissipation mechanism, the shell is provided with an accommodating space, the shell is provided with a first opening and a second opening, the heat dissipation mechanism is arranged on the shell and is used for dissipating heat for the shell; the collimating mirror module is connected with the shell, the light outlet of the collimating mirror module is arranged opposite to the first opening, and the collimating mirror module is used for being connected with an external laser; the galvanometer mirror module is connected with the shell, the galvanometer mirror module has a galvanometer mirror, the galvanometer mirror is located in the accommodating space and is located behind the collimating mirror module; the field lens module is connected with the shell, the field lens module has a field lens, the field lens is located in the accommodating space and is located behind the galvanometer mirror; and the protection mechanism has a protection lens, and the protection lens blocks the second opening. The high-power laser cleaning head has the advantages of high power, high cleaning efficiency, reliable and stable structure and long service life.