95 results about "Laser optics" patented technology

A laser annealing system and a laser annealing method are provided. A laser annealing system for annealing a thin film by irradiating the thin film on a substrate with a pulsed laser light, the laser annealing system comprising: a laser device for outputting the pulsed laser light; an optical system that irradiates the thin film with pulse laser light; and a processor that performs control to irradiate the same portion of the thin film with the pulsed laser light by performing burst irradiation in which a burst period in which the pulsed laser light is continuously irradiated and a suppression period in which the irradiation of the pulsed laser light is suppressed are repeated.

The invention provides a laser processing device and method, and the device comprises a laser device which is used for emitting laser; the optical system comprises a collimating lens, a shaping lens and a focusing lens, the laser is collimated and amplified by the collimating lens and then enters the shaping lens, the incident laser is converted into a flat-topped light spot from a Gaussian light spot by the shaping lens, and the flat-topped light spot is positioned on a bonding interface by moving the position of the focusing lens; the displacement table system comprises a longitudinal displacement table and a horizontal displacement table, and the longitudinal displacement table is used for driving the focus lens to move synchronously, so that the flat-topped light spot is located on a bonding interface; the horizontal displacement table is used for driving the heterogeneous bonding material to move synchronously so as to realize that the flat-topped light spot scans the whole bonding interface; the in-situ observation system is used for obtaining light spot images of the surface and the bonding interface at at least one height measurement point; and the processing control system is used for obtaining the moving distance of the focus lens according to the light spot image of the height measurement point so as to adjust the position of the focus lens. According to the method, the bonding interface can be optimized.

Laser welding device (1) for producing a welded joint (S) in the area of ​​a joint between at least two components (2, 3) by means of an emitted laser beam (LS) with - a laser scanner (4), having - at least one laser emitter (4.1) designed to emit laser radiation (L), and - at least one laser optic (4.2) designed to shape, direct and focus the emitted laser radiation (L) to form the laser beam (LS), - a measuring unit (4.3) which is designed, - to emit at least one measuring beam (MS) in such a way that it is guided to a predetermined point of impact on at least one of the components (2, 3), - to detect reflected components of the measuring beam (MS) and - to automatically determine depth data of the point of impact based on optical coherence tomography using measurement beam data (MD1 to MD3) determined from the reflected components, - a control unit (4.4) which is designed, - before welding, the measuring unit (4.3) is controlled so that it automatically scans a surface of the components (2, 3) in a grid-like scan movement using a measuring beam (MS), automatically determines geometric parameters of the components (2, 3) from depth data determined at the respective point of impact from measuring beam data (MD1), and stores the parameters as reference data in a database for different positions of the surface of the components (2, 3). - then, during welding, to control the laser scanner (4) so ​​that it directs the laser beam (LS) onto the surfaces of the components (2, 3) and at least partially melts the components (2, 3), and simultaneously to control the measuring unit (4.3) so that it automatically scans a generated melt (SM) using a measuring beam (MS) in a scanning motion and automatically determines depth data of a vapor capillary (DK) generated in the melt (SM) based on optical coherence tomography for different positions of the melt (SM) from measuring beam data (MD2), and - to compare the position-related depth data of the vapor capillary (DK) with the position-related reference data in a comparison process carried out simultaneously with or following welding, and to determine a position-related comparison depth of the vapor capillary (DK) in comparison to an initial state of the components (2, 3) existing before welding, wherein the measuring unit (4.3) is configured to emit at least one measuring beam (MS) into the at least one laser optic (4.2) in such a way that it is guided together with the laser beam (LS) to its point of impact.

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 application relates to the technical field of optical processing, and discloses a laser optical processing system with adjustable imaging depth, which comprises a laser emission unit, an optical transmission unit, a spectral domain optical coherence tomography unit, a laser galvanometer scanning unit, an indicating light imaging unit, an image processing and display unit and a control unit. The wavelength scanning mode of the spectral domain optical coherence tomography system is driven by a scanning telescopic rotating module, time scanning of high output wavelength is realized, image processing technology is combined to provide position information or image information of a sample from a surface to an interior in real time, the position of the sample is scanned in real time by a three-dimensional galvanometer scanning unit, the position and directional information of a scanning point are recorded, the real-time image information of the sample is simultaneously scanned, different depths, widths and axial positions are realized, the focusing depth and wavelength of an imaging laser beam, the focusing position and energy of a scanning laser beam are adjusted and fed back, and the sample is positioned for processing.

A Raman fiber laser includes a pump light source, a reflective end mirror, a wavelength division multiplexer, a Raman gain fiber, and an output end mirror. The output end mirror is an ultra-low reflectance fiber Bragg grating. The reflective end mirror is connected to a reflective end of the wavelength division multiplexer. The pump light source is connected to an input end of the wavelength division multiplexer. One end of the Raman gain fiber is connected to a common end of the wavelength division multiplexer, and the other end of the Raman gain fiber is connected to the ultra-low reflectance fiber Bragg grating. The laser of the present invention can reduce loss of laser light at the reflective end mirror, thereby increasing laser light optical conversion efficiency and output power, and simultaneously achieving high time domain stability and extremely low coherence.

A laser interferometer includes: a laser light source configured to emit first laser light; an optical modulator including a vibration element that generates a vibration component in a direction intersecting an incident surface of the first laser light, and configured to modulate the first laser light by using the vibration element to generate second laser light including a modulation signal; a photodetector configured to receive the second laser light and third laser light that includes a sample signal generated by the first laser light being reflected by an object, and output a light reception signal; a demodulation circuit configured to demodulate the sample signal from the light reception signal based on a reference signal; and an oscillation circuit configured to operate using the vibration element as a signal source and output the reference signal to the demodulation circuit.

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

The present application relates to the technical field of geophysical exploration, in particular to a downhole three-component magnetic field sensing system based on atomic magnetometer. The downhole three-component atomic magnetic field sensor is connected with the optical fiber signal modem in the ground well logging vehicle through the armored photoelectric composite cable. The optical fiber signal modem is used for real-time demodulation of the three-component magnetic field signals and three-component attitude signals measured by the three-component atomic magnetic field sensor. The three-component atomic magnetic field sensor comprises a non-magnetic high-temperature packaging structure, a high-temperature-resistant atomic gas chamber module, a three-axis orthogonal laser optical system, a high-temperature-resistant photoelectric detection array, a power management module, a temperature sensor, a magnetic field solving and signal processing unit and a three-component optical fiber attitude sensor which are arranged in the non-magnetic high-temperature packaging structure. The three-component atomic magnetic field sensor adopts the atomic magnetometer measurement principle, combines the high-temperature-resistant materials and the optimized heat dissipation design, and can work stably in an environment of up to 200 DEG C.

A method of laser-based high temperature mechanical property characterization comprising the steps of providing a mechanical test frame and chamber, loading a specimen in the mechanical test frame in the chamber, providing a laser, aligning the laser, sealing the chamber, evacuating 5 the chamber and optionally backfilling with a prescribed atmosphere, turning on the laser, applying mechanical loading to the specimen in the mechanical test frame, utilizing a load cell and a non-contact video extensometer, synchronizing the output of the load cell and non-contact video extensometer, and tracking the strain in the specimen. A device for laser-based high temperature mechanical property characterization comprising a vacuum chamber with a laser 10 transmissible window and viewing window, a vacuum pump, a uniaxial tensile system inside the vacuum chamber, a thermocouple inside the vacuum chamber, laser optics inside the vacuum chamber, a function generator, a laser source, an IR camera, and a video camera.

The present application relates to the technical field of laser optical control, and particularly relates to an electromagnetic mechanical shutter device, a light blocking piece of the device can reciprocate along a straight line, so that the light blocking piece is switched between a light beam passing position and a light beam blocking position, thereby realizing flexible control of the on-off of a laser beam. Meanwhile, by setting a diffuse reflection heat dissipation unit and setting a reflecting surface on the light blocking piece, when the light blocking piece is in the light beam blocking position, the incident laser beam can be reflected to the diffuse reflection heat dissipation unit, the laser energy is received and absorbed by the diffuse reflection heat dissipation unit, and the heat is dissipated in time, so that the problem of heat accumulation is effectively relieved, and the service life of the device is significantly prolonged. The present application also relates to a high-power laser, which comprises the electromagnetic mechanical shutter device.

The utility model is suitable for the technical field of laser equipment manufacturing, and provides a laser optical lens clamp assembly and a laser optical lens detection platform, and the laser optical lens clamp assembly comprises an upper rotating part, a clamp base, a clamp and a lower rotating part; the upper rotating piece is located above the lower rotating piece, and the upper rotating piece and the lower rotating piece are rotationally installed in the installation cavity of the clamp base. The upper rotating part and the lower rotating part are fixedly connected, the rotating end of the clamp extends into the position between the upper rotating part and the lower rotating part, the upper rotating part, the lower rotating part and the rotating end of the clamp are sequentially connected through the positioning part, the rotating end part of the clamp can rotate around the positioning part, and the other part of the rotating end of the clamp slides in the clamp base. The clamp is used for achieving clamping and opening of the clamp. The optical lens clamping device is suitable for clamping optical lenses of different sizes and keeping the optical lenses horizontal.

The application provides a thin-film solar cell two-dimensional code etching device, and provides a thin-film solar cell two-dimensional code etching device, which comprises a laser optical system, a material receiving reel, a material feeding reel, a tape sensor, a plurality of tensioning directional wheels and the like, and has the advantages of simple and compact structure and continuous operation capability. The device can edit the layout of the required mark in a self-defined mode, and can sputter the two-dimensional code information and the required mark information onto the surface of the glass by etching, so that the glass product is not damaged. The application also provides a thin-film solar cell two-dimensional code etching method, in which the near-infrared laser with a pulse width of nanoseconds is integrated and focused by using an optical system, and the high-temperature-resistant high-molecular material coated on PET or PEF is transferred to the surface of the glass by using a vibrating mirror scanning technology, so that the two-dimensional code and the related mark characters are obtained. The method has the characteristics of fast processing speed, stable process, easy maintenance, simple tape replacement and cost saving.

The objective of the present invention is to provide: a beam combiner in which the intensity of blue laser light after coupling is sufficiently strong and a temperature rise is suppressed; and a beam combiner system including the beam combiner. A beam combiner (1) according to the present invention comprises a substrate (2) and an optical multilayer film (4) formed directly on a substrate surface (Q), which is the surface of the substrate (2). The optical multilayer film (4) has alternating low refractive index layers and high refractive index layers, transmits first laser light (L1) in the blue region of p-polarized light, and reflects polarization-converted laser light (LZ) in the blue region of s-polarized light. Each high refractive index layer of the optical multilayer film 4 is an HfO2 layer made of HfO2 and contains a monoclinic crystal. The (-111) plane of the monoclinic crystal is oriented in the direction perpendicular to the substrate surface (Q).

This invention provides an on-board layout structure for a laser optical head, including a laser optical head, a head support, a thermal radiator, an L-shaped external heat pipe, and a slanted support structure. The head support is mounted on the outer surface of the satellite's ground plane, the slanted support structure is mounted below the ground plane at the bottom of the head support, the laser optical head is mounted on the head support, the thermal radiator is mounted on the side of the ground plane, the first end of the L-shaped external heat pipe is connected and fixed to the heat dissipation part of the laser optical head, and the opposite second end of the L-shaped external heat pipe is connected and fixed to the outer surface of the thermal radiator; and a cerium glass silver-plated secondary surface mirror is attached to the outer surface of the thermal radiator. Thus, this invention can solve the problem of thermal control layout for satellite laser optical head payloads.

The utility model discloses a light tactical dazzling laser gun, which belongs to the technical field of laser equipment and comprises a gun body, a laser optical lens is arranged at the front end of the gun body, a grip is arranged on the lower side of the rear end of the gun body, a battery is arranged on the lower side of the gun body close to the middle position, and a trigger is arranged between the grip and the battery. A display screen is arranged at the position, close to the upper side, of the rear end of the gun body, a laser, a microswitch and a control circuit board are arranged in the rear end of the gun body, the laser is connected with the laser optical lens through an optical fiber, the trigger abuts against the microswitch, and the control circuit board is electrically connected with the battery, the laser, the microswitch and the display screen. The laser gun is simple in structure, small in size, light in weight and convenient to disassemble, assemble, maintain and carry, various tactical accessories can be hung on the laser gun, and the use range of the laser gun is greatly widened. And the device can be widely applied to various service works such as anti-terrorism stability maintenance, anti-riot emergency treatment, expelling warning, arresting, searching, emergency help seeking and the like.

This application discloses a cuboid laser reflector auxiliary heating device and its control method based on heat flux topology reconstruction, belonging to the field of laser optics technology. This application aims to solve the problem of insufficient global temperature uniformity accuracy of existing uniform heating compensation methods due to spatial mismatch between the auxiliary heating field and the laser Gaussian thermal field. The device includes a cuboid reflector substrate, a continuous wiring channel on the back of the reflector substrate, and an electrothermal element embedded in the channel. The electrothermal element is spatially divided into at least two independently controlled auxiliary heating regions. The wiring density and power supply voltage of the electrothermal element in each region are coordinated, so that the Joule heat power density distribution generated by the electrothermal element on the back of the reflector substrate and the Gaussian heat flux density distribution of the incident laser on the reflecting surface satisfy a spatial complementary conjugate relationship, thereby forming a uniform total thermal field across the entire region. This application can accurately fill the temperature troughs in the laser Gaussian thermal field at the edge of the reflector, achieving high-precision temperature compensation.

The utility model discloses a cutting device in the field of cutting. The cutting device comprises a laser, an optical box, an electromechanical module, at least one drag chain and at least one sliding rail. The laser is used for emitting laser, and the optical box is used for receiving the laser emitted by the laser and then outputting laser for cutting; the electromechanical module is fixedly connected with the optical box, and the bottom surface of the electromechanical module is slidably connected with the sliding rail; the movable end of the drag chain is fixedly connected with the electromechanical module, and the electromechanical module drives the optical box to slide on the sliding rail. The laser cutting is adopted to replace knife cutting, so that the safety of the cutting process and the stability of the cutting effect are improved.

A device / system for firing a firearm round by igniting a specialized propellant in a specialized shell / casing / cartridge (hereinafter cartridge) with laser optics. The preferred embodiment and the system disclosed herein is intended for retrofitted use in a bolt action rifle, however, the principle may be applied to embodiments for pistols, shotguns and military munitions with minor changes to the laser's power, the focal lens for the cartridge and the laser ignitable propellant. The munitions cartridge design, its focal lens / window and column of charge constitute a critical element of this laser ignition device.

The application provides a stress measuring device for glass and an optical element, wherein: a light emitting unit is used for emitting laser light; the optical element comprises a first surface and a second surface, a laser light emitting direction of the light emitting unit is towards the first surface, the second surface is in contact with the glass to be measured, a collecting unit is used for collecting scattered light and processing the scattered light into a data signal; a processing unit is used for determining a stress distribution in the glass to be measured according to the data signal; wherein a plurality of support pieces and a gasket are arranged on the second surface, and the plurality of support pieces are arranged around the gasket. Thus, a matching refractive index liquid can be arranged between the prism and the glass to be measured, a small amount of the refractive index liquid is used to complete the measurement, the refractive index deviation between the laser passing through three media is reduced, the light loss caused by the interface is reduced, and the relative sliding of the glass to be measured caused by the refractive index matching liquid during the measurement is avoided, thereby solving the problem of inaccurate measurement.

The utility model discloses a large-caliber high-energy laser gun, which belongs to the technical field of laser equipment and comprises a gun stock, a cartridge receiver and a laser optical lens, the cartridge receiver is arranged at the front end of the gun stock, the laser optical lens is arranged in the cartridge receiver, the inside of the gun stock is of a hollow structure, and a control circuit board, a microswitch and a communication aviation plug are arranged in the gun stock. A trigger is arranged at the position, close to the middle, of the lower side of the gun stock, the trigger is connected with the microswitch through a connecting rod, a display screen is arranged at the position, close to the front end, of the upper side of the gun stock, and the control circuit board is electrically connected with the microswitch, the display screen and the communication aviation plug. The laser gun is convenient to use, convenient to disassemble and assemble due to the modular design, high in aiming degree, capable of automatically focusing, capable of being externally connected with a high-power laser generator, long in acting distance and wide in application, laser does not radiate strong electromagnetic signals, the laser gun is not affected by environmental electromagnetic interference, and target photoelectric equipment can be effectively damaged and interfered, and inflammable materials such as ignition oil, wood plates and organic fabric can be effectively ignited.

The invention discloses a high-power low-intensity noise semiconductor laser packaging structure, which structurally comprises a heat management module, a heat sink base, a laser chip, a chip base, an optical coupling module, a packaging shell and an intensity noise processing module, wherein the laser chip, the chip base and the optical coupling module are positioned above the heat sink base; the intensity noise processing module is positioned in a non-light-path area of the inner side wall of the packaging shell; the laser chip is used as a laser emission core to provide initial laser; the optical coupling module performs beam shaping, feedback control and output coupling on laser emitted by the laser chip; the intensity noise processing module comprises a piezoelectric MEMS sensor and a photonic crystal electrical filter and is used for performing feedback suppression on intensity noise; and the thermal management module performs temperature control on the laser chip and the optical coupling module. Through the synergistic effect of controllable optical feedback of the optical coupling module and precise temperature control of the temperature controller, the semiconductor laser light source still keeps extremely low intensity noise under the high-power output condition, and good repeatability and high reliability are achieved.

The invention relates to the technical field of intense laser optical element processing, and discloses a fused quartz intense light element subsurface damage performance evaluation method, which comprises the following steps: making a pit on the surface of a to-be-detected element by utilizing the characteristic that no additional crack is generated in magnetorheological polishing so as to expose a subsurface damage layer of the to-be-detected element; performing acid etching on the to-be-tested element to remove a hydrolysis layer formed on the surface of the to-be-tested element through magneto-rheological polishing; measuring the slope contour line of the magnetorheological pit; carrying out a photo-thermal weak absorption test and a fluorescence test on the subsurface of the to-be-tested element from shallow to deep along the inclined plane contour line of the magneto-rheological pit; and determining the depth of the sub-surface damage layer of the to-be-detected element according to the horizontal distance of extension of the sub-surface damage of the to-be-detected element and the inclined plane profile of the magnetorheological pit. Through combination of magneto-rheological polishing pit making, acid etching treatment and photo-thermal weak absorption and fluorescence testing along the inclined surface of the pit, direct association among subsurface depth, defect distribution and laser damage performance is established, so that the problems of single characterization defect type and the like are solved.

A narrow type and low light loss laser optical module comprising: a base, which having a laser diode and a photodiode chip; wherein: a narrow shape tube, the diameter of the bottom of the narrowed shape tube is smaller than the base, and is covering the outer periphery of the fixed base, the top of the narrowed shape tube is provided with a through opening without a cover; an optical glass inserted from above the through opening and fixed on the accepting surface, so as to form a narrow type laser optical module; and the height of the narrow shape tube is set based on the optical characteristics of the optical glass and the focal length required by the narrow type laser optical module.

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

The present application relates to the technical field of medical devices, and provides a continuum mechanical arm structure integrated with laser focusing and ultrasonic feedback functions, comprising a distal continuum module, a proximal continuum module, a first driving tendon and a second driving tendon, the first driving tendon being used for controlling movement of the distal continuum module, and the second driving tendon being used for controlling movement of the proximal continuum module; a pose detection module and a laser optical module are sequentially arranged at the front end of the distal continuum module, the pose detection module is used for acquiring relative pose information of a target lesion, and the laser optical module is used for projecting laser energy to treat the target lesion; an endoscope vision module is arranged on the side wall of the distal continuum module, and the endoscope vision module is used for acquiring image information. The present application not only can improve the flexibility and adaptability of surgery, but also can realize precise treatment, improve treatment effect, avoid damage to surrounding healthy tissues, reduce surgical risk, and meet the requirements of flexibility and accuracy of orthopedic treatment.

The utility model discloses a light intensity adjusting device and a laser optical system, and relates to the technical field of optics. The light intensity adjusting device comprises a beam expanding and shaping assembly and a polarization adjusting assembly which are sequentially arranged along a light path. The beam expanding and shaping assembly comprises a shaft distance adjusting piece, a first optical element and a second optical element, wherein the first optical element and the second optical element are arranged on the two opposite sides of the shaft distance adjusting piece respectively. The shaft distance adjusting piece drives the first optical element to move in the axial direction to get close to or get away from the second optical element. The polarization adjusting assembly comprises a rotation driving part, a wave plate and a polaroid, the wave plate is arranged between the polaroid and the second optical element, and the rotation driving part can drive the wave plate to rotate with the optical axis as the rotation axis; the first optical element, the second optical element, the wave plate and the polarizer are arranged along the same optical axis. The light intensity adjusting device is compact in structure, light intensity can be accurately adjusted, and the output stability and uniformity of laser are improved.

The application provides a laser processing device and a laser processing method, which comprise: a laser for emitting laser; an optical system comprising a collimating mirror, a shaping mirror and a focusing mirror, laser is collimated and enlarged by the collimating mirror, then is incident to the shaping mirror, the shaping mirror converts the incident laser from a Gaussian spot into a flat-top spot, the flat-top spot is located at a bonding interface by moving the position of the focusing mirror; a displacement table system comprising a longitudinal displacement table and a horizontal displacement table, the longitudinal displacement table is used to drive the focusing mirror to move synchronously, so that the flat-top spot is located at the bonding interface; the horizontal displacement table is used to drive the hetero-bonding material to move synchronously, so that the flat-top spot scans the whole bonding interface; an in-situ observation system for obtaining spot images of the surface and the bonding interface at at least one height measuring point; and a processing control system for obtaining the moving distance of the focusing mirror according to the spot images of the height measuring point, so as to adjust the position of the focusing mirror. The application can realize bonding interface optimization.

A laser surface treatment device includes: a laser device configured to output laser light; an optical head configured to irradiate a surface of an object with the laser light output from the laser device; a detection processing unit configured to detect a physical quantity that changes according to irradiation of the laser light; and a control unit configured to control, based on the physical quantity detected by the detection processing unit, at least either power of the laser light output from the optical head or an irradiation position of the laser light on the surface. Treatment of the surface is carried out by irradiating the surface with the laser light.