152 results about "Laser application" patented technology

The invention belongs to the technical field of laser application, and discloses a feedback type multi-wavelength optical fiber laser shaping and amplifying system which comprises a laser light source, an optical fiber frequency doubling device and a laser shaping and amplifying mechanism. The laser shaping and amplifying mechanism comprises a laser shaping and amplifying branch or more than two laser shaping and amplifying branches which are arranged in sequence; the laser shaping and amplifying branch comprises a feedback type laser shaping device and an optical fiber gain amplifying device; the optical fiber frequency doubling device is used for carrying out selective frequency conversion on fundamental frequency laser output by the laser light source; the feedback laser shaping device is used for carrying out waveform shaping on target wavelength laser; and the optical fiber gain amplification device is used for performing gain amplification on the shaped target wavelength laser. The device has the advantages of being simple in structure and high in expansibility, is suitable for being used in an optical fiber laser application system, and is used for modulating laser frequency, improving multi-wavelength laser waveforms and improving multi-wavelength laser output energy.

The invention provides a method for processing a micro-channel in glass by femtosecond laser, and belongs to the technical field of laser application, and the method comprises the following steps: carrying out polishing pretreatment, ultrasonic cleaning and drying treatment on a glass material to be processed to obtain a clean glass material with a polished surface; the femtosecond laser is led to the position above the surface of the glass material through a plurality of reflection lenses, and the femtosecond laser is vertically focused in the glass material through a focusing objective lens; the femtosecond laser is treated by utilizing an ultrasonic solution auxiliary means and a time domain shaping device, so that the femtosecond laser is used for preparing a microchannel and a modified region in the glass material; and immersing the glass material with the micro-channel into a KOH solution for etching to obtain a glass sample with a large-length micro-channel. According to the method, femtosecond laser light field shaping and ultrasonic-assisted coordinated regulation and control of parameters are adopted, chemical etching is combined, the machining length and quality of the micro-channel in the glass are effectively improved, and the problems that in the traditional manufacturing process of the micro-channel in the glass, the machining length is limited, and the wall quality of the micro-channel is poor are effectively solved.

The utility model belongs to the field of laser application, and relates to beam shaping of a laser, in particular to a small-divergence-angle laser based on a beam shaping technology. The problems that in the prior art for laser diode collimation, astigmatism of the diode cannot be calibrated through single-lens collimation, and cost is increased due to the fact that fast axis collimation and slow axis collimation need to customize a fast axis collimating lens with a proper focal length are solved. The utility model discloses a small-divergence-angle laser based on a beam shaping technology. A first collimating lens, a fast-axis beam shrinking device and a beam expander are sequentially arranged on an emergent light path of a first laser diode; the light emitting point of the first laser diode is located at the focal point of the first collimating lens, the fast axis beam shrinking device comprises a first cylindrical lens and a second cylindrical lens, and the focal points of the first cylindrical lens and the second cylindrical lens coincide. According to the utility model, the divergence angle of the laser diode is reduced to 0.1 mrad, so that the diameter of a light spot at 500m is less than 100mm, and the actual light spot observed in an experiment is 80mm.

The invention relates to the technical field of femtosecond laser application, in particular to a femtosecond laser micro-nano machining device based on dynamic focusing, which comprises a machining table used for mounting an object to be machined and a driving mechanism moving according to a machining track, and a laser used for generating femtosecond laser pulses is arranged above the machining table. A rotating module and a beam shrinking mechanism are sequentially arranged in the irradiation direction of the femtosecond laser pulse; the rotating module comprises a first light path system for irradiating according to a processing track and a second light path system for forming detection irradiation on an object to be processed; the beam shrinking mechanism is used for adjusting the beam diameter and forming polarized light in different polarization states; the CCD camera is used for acquiring real-time image data; the control module is used for adjusting the power of the beam shrinking mechanism and the laser based on the real-time image; the method is used for automatically adjusting the control parameters according to the machining track control requirement in the complex machining task, and the machining precision is guaranteed.

DEPCT68 The welding method disclosed here includes a procedure for applying laser light for... Inspect the workpiece at an angle while varying the amount of light dispersion. The process of determining the correction value for the amount of light scattering based on intensity. Laser backlight for inspection and workpiece welding process. Laser light is applied to the workpiece so that the amount of light scattering is adjusted. The correction value is zero in the welding method as disclosed, laser light for inspection. It is scanned in a direction approaching the laser emission point for time-based monitoring. The amount of light scattering will be zero during the laser application process for... Inspect the workpiece. From the results, determine the welding method, welding system, and possible adjustments. Improvements to the accuracy of laser beam focusing control for welding were provided;

The utility model relates to the technical field of laser application, in particular to a laser frequency stabilization device based on an etalon frequency measurement technology, which comprises a laser emission unit, a frequency detection unit, a frequency stabilization laser output end and a master control adjusting unit, the frequency detection unit comprises an optical splitter, an optical attenuator, a first photoelectric detector, an etalon and a second photoelectric detector. An etalon in the frequency detection unit is used as a frequency reference, an optical attenuator is arranged to reduce temperature rise and improve precision, a first photoelectric detector and a second photoelectric detector are used to provide a frequency measurement error signal and a reference signal, and the master control adjustment unit is used to carry out analysis and calculation according to the error measurement signal and the reference signal. And the laser emitting unit adjusts the laser frequency according to the adjusting signal, so that the frequency stabilization adjustment of the laser is realized.

The application discloses a kind of offshore surface fly body void ratio prediction methods based on laser attenuation coefficient, it is related to marine environment perception and laser application technical field;The application is measured data of 532nm laser emission and receiving power in actual scene, the standardized formula based on Lambert-Beer law is used to calculate 532nm laser attenuation coefficient, to attenuation coefficient as only input parameter, the body void ratio of offshore surface fly is solved by the prediction model obtained by polynomial fitting, it solves the problem that traditional method is insufficient in prediction accuracy, scene adaptability is poor, while the input parameter of prediction model is less, expression form is simple, calculation is fast, the quick calculation and real-time inversion of offshore surface fly body void ratio parameter can be realized in practical application.

To determine the quality of connection of an optical connector.SOLUTION: The optical connector connection determining apparatus includes a 1.5 μ F1a for introducing a connection checking laser beam into an input optical fiber mLD14, a connection checking laser beam extraction unit 17 for extracting the connection checking laser beam from the extraction optical fiber F1d, a connection determining unit 18 for determining whether the connection between the first optical connector 12 and the second optical connector 22 is good or bad based on the connection checking laser beam extracted by the connection checking laser beam extraction unit 17, a first connection checking laser beam applying unit F1b - c for receiving the connection checking laser beam from the intermediate optical fiber F1c and applying the connection checking laser beam to another intermediate optical fiber 19a, and second connection checking laser beam applying units F2a, F2c, F2b for receiving the connection checking laser beam from one second optical fiber () and applying the connection checking laser beam to another second optical fiber (). 26b F2d 26c 26a 24a 24c 24b.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of optical fiber communication and laser, in particular to a double-shaft double-wavelength polarization-maintaining ultrahigh-power optical fiber amplifier, which comprises a polarization-maintaining beam splitter, a polarization-maintaining wavelength division multiplexer, a polarization-maintaining doped fiber, a polarization-maintaining beam combiner, a double-cladding polarization-maintaining optical fiber and a polarization-maintaining coupler, the other side of the polarization-maintaining wavelength division multiplexer is in optical fiber connection with a polarization-maintaining doped fiber, the other side of the polarization-maintaining doped fiber is connected with a polarization-maintaining beam combiner, the other side of the polarization-maintaining beam combiner is connected with a double-cladding polarization-maintaining optical fiber, and the other side of the double-cladding polarization-maintaining optical fiber is in optical fiber connection with a polarization-maintaining coupler; according to the utility model, stable and high-power output can be realized on two different spectral wavelengths at the same time, the polarization state of signal light is kept unchanged, the signal quality and the system performance in an optical communication system and industrial laser application are remarkably improved, the dual-wavelength high-power output and the polarization maintaining performance are realized, and the application range is wide. And the reliability and efficiency of the system are improved.

The application discloses a laser cleaning scanning line width self-adaptive adjustment system, method, equipment and medium, relates to the fields of laser application technology and intelligent online monitoring of surface state, and the system comprises a computer control module, a photosensitive monitoring module and a line width regulation module; the photosensitive monitoring module acquires the brightness and color image of the laser interface line width of the area that is not cleaned on the surface of the material irradiated by the laser in real time, the computer control module compares the brightness and color image with the brightness and color standard image in the photosensitive comparison database to obtain a difference line width image, determines the second edge limit information of the area that is not cleaned, controls the line width regulation module to adjust the deflection angle of a galvanometer, and adjusts the length of the laser scanning line width; the laser cleaning scanning optical system performs re-cleaning on the area that is not cleaned according to the laser with the adjusted line width, and completes the cleaning of the overall area on the surface of the material that is cleaned. The application can improve the accuracy and self-adaptive adjustment of laser cleaning.

This invention relates to the field of laser application technology, specifically a precision long-range laser demolition device. It includes a support frame on which a laser device is fixedly mounted. The laser output end of the laser device is a laser emitter head. A fixed shell is integrated into the laser device, and a limiting groove is formed inside the fixed shell. A sliding block is slidably connected within the limiting groove, and a pair of protective mirrors are mounted on the sliding block. The protective mirrors protect the laser emitter head, and a slider is fixedly connected to the sliding block. When using this device in rainy weather, if rainwater or debris adheres to the protective mirrors, the rainwater and debris will cause diffraction and scattering of the laser, resulting in an increased beam divergence angle and affecting the laser power. Wiping the surface of the protective mirrors with a sponge can prevent debris and rainwater from affecting the light transmittance of the protective mirrors.

The utility model relates to the technical field of Q-switched laser application, and particularly discloses an optical lens adjusting frame, which comprises a right-angle fixed lens frame, a through groove hole is arranged on a vertical plate of the right-angle fixed lens frame, a lens adjusting lens cone is arranged in the groove hole, a lens pressing ring for pressing a lens is arranged on one side of the lens adjusting lens cone, and a lens fixing ring is arranged on the other side of the lens adjusting lens cone. Screw holes are evenly distributed in the circumference of the side, away from the lens pressing ring, of the lens adjusting lens cone, and lens cone fixing screws corresponding to the screw holes are arranged on the vertical plate of the right-angle fixing lens frame and located on the circumference of the groove hole. A lens is installed between a lens adjusting lens cone and a lens pressing ring, a lens cone fixing screw on a right-angle fixing lens frame is connected with the lens adjusting lens cone, the lens cone adjusting screw adjusts the vertical angle between the lens cone and the center vibration reduction optical axis of the laser resonant cavity through three-point adjustment of the lens, and the lens on a movable piece is kept in a completely vertical state with the optical axis. The overall size is small, installation and fixation are easy and convenient, stability is high, and the application range and convenience are improved.

The invention provides a method for preparing a gradient microstructure on the surface of a current collector, and belongs to the field of laser application. The invention provides a method for preparing a gradient microstructure on the surface of a current collector. The method comprises the following steps: scanning the surface of the current collector by using combined laser; the combined laser comprises nanosecond pulse laser and femtosecond pulse laser; the output power of the nanosecond pulse laser is 50-100 W, and the output power of the femtosecond pulse laser is 15-30 W; the pulse width of the nanosecond pulse laser is 50 to 500 ns, and the repetition frequency of the nanosecond pulse laser is 10 to 50 kHz; the pulse width of the femtosecond pulse laser is 50-500 fs, and the repetition frequency of the femtosecond pulse laser is 10-50 kHz; and the speed of the combined laser during scanning is 1500-3000mm / s. The gradient microstructure meeting the service performance requirement of the current collector is prepared by regulating and controlling the output power, the pulse width, the repetition frequency and the scanning speed of the nanosecond pulse laser and the femtosecond pulse laser.

A laser atherectomy device includes a sensor-equipped light transmission conduit for monitoring physical properties of a laser application site. An integrated control unit utilizing data from the sensors is provided to optimally adjust laser energy parameters and safely and efficiently ablate vascular occlusions.

The invention provides a cigarette lighting device and method for realizing stable laser output, and relates to the technical field of semiconductor laser application, the cigarette lighting device comprises a laser, a lithium battery, a voltage boosting and stabilizing circuit, a constant current driving circuit, a timing control circuit, a first switch and a second switch; the input end of the boost voltage stabilizing circuit is connected with the lithium battery, the output end is connected with the input end of the constant-current driving circuit, and the output end of the constant-current driving circuit is connected with the laser; the output end of the timing control circuit is connected with the grounding end of the constant current driving circuit; the first switch is arranged between an enabling pin of the voltage boosting and stabilizing circuit and a power supply and is used for controlling the voltage boosting and stabilizing circuit to be switched on and switched off; the second switch is connected with the trigger end of the timing control circuit and used for triggering the timing control circuit to output signals. According to the cigarette lighting device and method, tobacco shreds can be lighted within two seconds, the power density is close to 1 W / mm, and the power density is far better than that of a traditional laser lighting scheme.

The invention provides a laser coating method, and relates to the technical field of laser application. The laser coating method comprises the following steps: step 1, acquiring demand parameters of a substrate material needing to be coated, and setting coating working parameters according to the demand parameters; 2, cleaning the transparent material substrate, and ensuring that the surface of the transparent material substrate is free of oil stains and impurities; 3, the linear laser beam is divided into a cleaning laser beam and a coating laser beam through a spectroscope; step 4, carrying out laser cleaning on the surface of a substrate to be coated through a cleaning total reflection mirror by utilizing the cleaning laser beam; and step 5, performing hot melting on the target material in contact with the surface of the cleaned substrate in the step 4 by utilizing the film coating laser beam through a film coating total reflective mirror. According to the method, laser cleaning and film coating are integrated, the surface of the substrate does not need to be independently cleaned before film coating, the whole working process is smoother, large-scale production is facilitated, and laser cleaning objects are wider.

The invention relates to a laser Doppler space sound field reconstruction system and method, and belongs to the field of laser application. The laser Doppler space sound field reconstruction system comprises an optical fiber laser, a 1 * 2 optical fiber coupler, an optical fiber acousto-optic modulator, an acousto-optic driving power supply, an optical fiber attenuator, a 2 * 1 optical fiber coupler, an optical fiber loop device, a photoelectric detector, a signal acquisition card, an industrial personal computer, a transceiving integrated lens, a piezoelectric deflecting mirror, a target sound field driving device and a hard reflecting plate. According to the laser Doppler space sound field reconstruction system, the problems of non-contact high-precision measurement and reconstruction of the space sound field are solved, laser Doppler vibration measurement and the space sound field measurement technology are combined, and the advantages of non-contact, high precision and high signal-to-noise ratio of an optical measurement method are utilized; the influence of measurement equipment on the target space sound field in a conventional measurement method is effectively avoided, the space sound field is reconstructed through a filtered back projection algorithm, and visual dynamic distribution of the intensity parameters of the target sound field is achieved.

The application discloses a method for regulating Brillouin gain, a laser and an optical microwave source, and specifically relates to the method for regulating Brillouin gain. a The application discloses a method for regulating Brillouin gain, a laser and an optical microwave source, and specifically relates to the method for regulating Brillouin gain. The method for regulating Brillouin gain adopts the gradual change of the angle between the circular light path and the crystal axis, so that the speed of the generated acoustic phonon is continuously changed, and then the widened backward Brillouin gain feature is generated, the threshold of the backward Brillouin laser is reduced, the linewidth of the Brillouin laser is reduced in one step, and the diversity of the Brillouin laser application is increased.

The present invention relates to a laser surgical system for cutting hard tissue on an object, comprising a handheld laser applicator, a collaborative robot with a robot arm to which the handheld laser applicator is attached, a navigation system with which the instantaneous position of the laser applicator relative to the object can be detected, and a controller for the collaborative robot. The laser applicator has a measuring device with which the cutting depth of a kerf produced by a processing laser beam and the residual thickness of the hard tissue in the kerf can be measured.The control system directs the collaborative robot during the execution of a cut based on data from the navigation system and the measuring device in such a way that it maintains a cutting distance of the laser applicator to the object required for cutting via the robot arm and only allows a feed movement of the laser applicator along a cutting line by the operator when a cut that has just been carried out is completely finished.

The application belongs to the technical field of laser application, and discloses a multi-wavelength laser frequency multiplication device and a multi-wavelength spatial laser modulation device. The multi-wavelength laser frequency multiplication device comprises a base A and one or more laser frequency multiplication units. Two rows of first mounting grooves are arranged on the two sides of the base A in parallel along the length direction of the base A. Each row of the first mounting grooves comprises two or more coaxially arranged clamping grooves A, and the clamping grooves A on the two rows of the first mounting grooves are symmetrically arranged. The laser frequency multiplication unit is mounted in the symmetrically arranged clamping grooves A of the two rows of the first mounting grooves. Each laser frequency multiplication unit corresponds to laser of one wavelength, and performs frequency multiplication processing on the laser of the corresponding wavelength. The multi-wavelength spatial laser modulation device comprises a fundamental frequency laser, a selective frequency multiplication mechanism provided with the multi-wavelength laser frequency multiplication device, and a laser shaping and amplifying mechanism. The application has the characteristics of simple structure and strong expansibility, and is suitable for use in a spatial laser application system to synchronously modulate the multi-wavelength laser frequency, waveform and power.

The invention belongs to the technical field of ultrafast laser application, and particularly discloses an ultrafast imaging and real-time processing integrated system based on a spatial light modulator. Comprising a signal generator, a femtosecond laser, a first pump light beam splitter, a probe light processing subsystem, a pump light modulation subsystem, a 4F unit, an optical delay translation stage, a fourth reflector, a second band-pass filter, a CCD camera, a coaxial cage type mechanical module, a three-dimensional displacement stage and a computer control subsystem. A spatial light modulator is used for carrying out spatial shaping on femtosecond laser, so that precise shaping machining is completed while the transient process of a material is observed. According to the invention, the problem that a traditional oblique incidence ultrafast pumping detection system and a diversified light field processing function cannot be seamlessly integrated in time and space in the prior art is solved.

The application relates to an all-fiber variable carrier laser sound field measuring device and a variable carrier modulation method, and relates to the technical field of laser application. The device comprises a main laser, a third fiber coupler, a fiber attenuator, a second fiber coupler, a balanced photoelectric detector, a signal acquisition card and an industrial computer; the third fiber coupler is further connected with an optical phase-locked loop; the optical phase-locked loop comprises the following components connected in sequence: a first fiber coupler, a phase detector, a signal amplifier, a frequency mixer, a voltage-controlled oscillator and a slave laser; wherein the frequency mixer is further connected with a local oscillator. The all-fiber laser coherent vibration measuring light path is adopted as the light path structure of the spatial sound field measuring system, can be disassembled and simply installed, and all the light paths are transmitted through optical fibers, so that the influence of ambient light can be avoided. The fiber attenuator in the local light path can adjust the attenuation coefficient in real time according to factors such as a detection distance and a detection angle, and the matching efficiency of the local light and the signal light is greatly improved.

The present application relates to a kind of biological medical titanium alloy surface modification method, belong to laser application technical field.The method first utilizes femtosecond laser to process groove-micro ripple composite structure on the surface of clean polished nickel titanium alloy material;Then, rich nanometer sheet is formed on the basis of the structure by alkali heat treatment, and groove-micro ripple-nanometer sheet multistage micro-nano composite structure is obtained;Subsequently, the multistage micro-nano composite structure is placed in the alkaline Tris buffer solution containing hydrochloric acid dopamine to coat polydopamine coating;Finally, the multistage micro-nano composite structure with polydopamine coating is placed in silver nitrate solution to load silver ion, complete titanium alloy surface modification, realize the promotion of titanium alloy bioactivity, bone integration ability and anti-bacterial infection ability.

The application relates to a laser cleaning control system and method, which belongs to the field of laser application control, wherein the laser cleaning control system is adapted to a laser cleaning execution system, and comprises an upper computer, an instruction input component and a core circuit; the upper computer is used for generating a fixed instruction based on fixed parameters and sending the fixed instruction to the core circuit; the instruction input component is used for generating a dynamic instruction based on dynamic parameters and sending the dynamic instruction to the core circuit; and the core circuit is used for receiving the fixed instruction and the dynamic instruction, and sending the fixed instruction and the dynamic instruction to the laser cleaning execution system to complete laser cleaning work. The application combines two control modes, simultaneously supports automatic laser cleaning and handheld laser cleaning, can adapt to more working conditions, and is simple to operate and high in convenience.

The application discloses a kind of processing methods of multi-focal microlens array, belong to laser application technical field.The purpose of the present application is to solve the problem of traditional plane microlens array only single focal length, low processing efficiency and great processing difficulty;The method is obtained by spatial shaping to ultrafast laser in the quartz inside different focal depth multi-focal array, realize different depth in quartz glass inside ablation.After being ablated quartz glass is etched by hydrofluoric acid solution, utilize the characteristics of ablation point depth in quartz, prepare the microlens array of different focal length on quartz surface.The advantage of the method is high processing efficiency, structure morphology controllable, high processing quality, and the ratio of maximum focal length and minimum focal length of sub-lens can satisfy the demand of microlens array in different application occasions.

The utility model relates to the technical field of laser application, and discloses a wearable multifunctional laser system, which comprises a wearable carrier, a laser host, a power supply device, a laser emission head and an emission control device are arranged on the wearable carrier, and the laser host, the power supply device and the emission control device are fixed on the wearable carrier. The power supply device is electrically connected with the laser host and the emission control device. A plurality of fixing positions for fixing the laser emitting heads are distributed on the wearable carrier, and the plurality of laser emitting heads are respectively loaded and fixed at the fixing positions; the laser host is provided with a flexible tail fiber, and the free end of the flexible tail fiber is provided with a connection joint used for detachable connection of the laser emission head. The laser is combined with traditional clothes to form integrated equipment, the laser function can be guaranteed, comfort and attractiveness are achieved, a switchable laser emitting head is matched, multiple functions are integrated, and the application range and the use efficiency of the medium-low power optical fiber laser in the actual production and life field are expanded.

The invention discloses a test system suitable for the performance of an acousto-optic modulator, and the system comprises a light source directivity test unit, a zoom lens group, a pre-diffraction power monitoring unit, a response time test unit, a post-diffraction directivity test unit, a diffraction efficiency test unit, and an imaging efficiency test unit. The acousto-optic modulator to be tested is arranged between the pre-diffraction power monitoring unit and the response time testing unit, the acousto-optic modulator to be tested is in control connection with the stability control unit, and an isolator is arranged between the light source directivity testing unit and the zoom lens group. According to the method, the optimal use performance of the acousto-optic modulator in different laser application fields can be achieved, meanwhile, the method is also suitable for application of the optical fiber type acousto-optic modulator, and the method can be used for design of all wavebands, all powers and all laser modulation systems.

The utility model relates to the technical field of Q laser application, and particularly discloses a single-cavity double-loop Q-switched laser which comprises a bottom plate, a single-lamp double-rod light-gathering cavity is arranged at the upper end of the bottom plate, and an optical polaroid adjusting frame, a Q switch adjusting frame, a 12.5 optical lens adjusting frame and a 20 optical input lens adjusting frame are sequentially arranged on one side of the single-lamp double-rod light-gathering cavity. A 15 optical lens adjusting frame and a 20 optical turn-back lens adjusting frame are sequentially arranged on the other side of the single-lamp double-rod light-gathering cavity, a 20 optical backward-returning lens adjusting frame is arranged on the front side of the 20 optical turn-back lens adjusting frame, and an adjustable light barrier is arranged on the side, away from the 20 optical backward-returning lens adjusting frame, of the single-lamp double-rod light-gathering cavity. Through the arrangement of the light adjusting frame, the optical polaroid adjusting frame, the Q switch adjusting frame and the like on the two sides of the single-lamp double-rod light-gathering cavity, laser energy is adjusted and output, so that the whole structure is compact, the size is small, installation is convenient, stability is good, and use efficiency is high.

The invention relates to the technical field of laser processing and numerical control, and discloses an intelligent control method and device applied to galvanometer laser, and the method comprises the steps: carrying out calibration operation on a target processing object, obtaining a target calibration result corresponding to the target processing object, and determining an error parameter corresponding to the target processing object through a target driver; determining a measurement parameter corresponding to the target processing object, and generating a compensation parameter corresponding to the target processing object based on the measurement parameter and the error parameter; based on the compensation parameters, cooperative control parameters corresponding to the target machining equipment are generated, and the cooperative control parameters are used for controlling a galvanometer laser emitting assembly, a Y-axis driving assembly and a roller motor assembly corresponding to the target machining equipment to achieve cooperative operation. Therefore, the processing efficiency in the galvanometer laser application process can be improved, and the control intelligence and the control efficiency can be improved.

The invention discloses a non-reflection galvanometer laser swing output method, a non-reflection galvanometer laser swing output structure and a deformable output head. The non-reflection galvanometer laser swing output method comprises the steps that S100, an output section of an energy transmission optical fiber is cut flatly and then welded to a quartz vertebral mirror; s200, protecting and fixing a section of optical fiber adjacent to the quartz vertebral mirror and the quartz vertebral mirror by using a bare optical fiber protection sleeve, and stopping the external acting force on the optical fiber outside the bare optical fiber protection sleeve; and S300, applying an external force by using the electromagnetic assembly to enable the bare fiber protection sleeve to generate tiny swing smaller than + / -1 degrees, so that the laser beam generates swing output meeting the application requirement of laser welding. The handheld laser swing output head is small and exquisite, light in weight, free of a reflection light path, easy to debug and easy to maintain, can be suitable for being held for a long time like a conventional handheld laser swing output head, and can extend into a narrow space into which the previous handheld laser swing output head cannot enter to carry out laser application operation by changing the shape.