329 results about "Laser assisted" patented technology

The invention relates to a Spin Exchange Relaxation-Free (SERF)-based magnetometer system (100) for detecting ultra- weak magnetic fields, particularly suited for bio¬ sensing applications such as MEG, MCG, and MRI. The system operates at room temperature and includes a VCSEL (101) emitting dual beams tuned to Rubidium-87 transitions, a microfabricated vapor cell (102) with LIAD-based heating (103), and an optical assembly (104) for polarization control. A detection unit (105) converts Faraday rotation into electrical signals, enhanced by lock-in amplification. Magnetic shielding (106), thermal management (107), and relaxation mitigation maintain SERF conditions. A calibration subsystem (109) and embedded machine learning module (110) optimize sensitivity in real time. The compact, cryogen-free architecture enables portable and wearable applications. The invention achieves femtotesla-level sensitivity while overcoming limitations of conventional SQUID-based systems, making it suitable for clinical and field deployments.

The invention discloses a laser-assisted helium arc penetration fusion welding method, and belongs to the technical field of welding. The problems that according to an existing paraxial laser-electric arc composite structure, the welding track is difficult to control, the energy coupling efficiency is low due to laser energy loss, and weld joint partial melting and undercut defects are caused due to uneven distribution of a welding temperature field due to a generated asymmetric heat source are solved. The welding method comprises the steps of 1, pretreatment; 2, after being focused by a focus lens, the laser is divided into three laser beams through a spectroscope, then the three laser beams are converged again through a plurality of reflectors, three fan-shaped light spots are formed on the surface of the to-be-welded plate after convergence, and finally the focal plane position of the laser is adjusted to be located on the surface of the to-be-welded plate; 3, setting welding current and arc voltage; and fourthly, laser is used for assisting helium arc penetration fusion welding. The method is used for laser-assisted helium arc penetration fusion welding.

The invention relates to a fatigue limit rapid prediction method based on infrared thermal image energy dissipation characteristics. The method comprises the steps of sample preparation and pretreatment, fatigue loading stress level upper limit determination, infrared fatigue test and temperature rise data acquisition, thermal image data processing and temperature rise feature extraction, energy dissipation model construction, fatigue limit value prediction, error analysis and method verification. The method comprises the following steps: monitoring steady-state temperature rise rates under different stresses through a thermal infrared imager, establishing a relation curve between a dissipation rate and a stress amplitude, predicting a fatigue limit based on a least square method, and comparing the fatigue limit with an S-N test result for verification. Compared with a traditional method, the method has the advantages of high prediction precision, high response sensitivity, low loss, short test period and the like, and is particularly suitable for rapid fatigue limit prediction and strengthening effect judgment of the high-temperature alloy material subjected to laser-assisted ultrasonic rolling strengthening.

The invention discloses a laser-assisted sintering method for a TOPCON solar cell, the TOPCON solar cell and a photovoltaic module. The front surface of the battery is divided into a first edge region, a middle region and a second edge region along a first direction, and grid lines are arranged on the front surface; performing laser-assisted sintering on the first edge region and the second edge region under a first bias voltage U1; performing laser-assisted sintering on the middle region under a second bias voltage U2; wherein U2-U1 is marked as U, 0.5 V < U < = 9V, the length of the battery along the first direction is L, the lengths of the first edge region, the second edge region and the middle region along the first direction are d1, d2 and d3 respectively, d3 = L-d1-d2, 0.02 L < d1 < = 0.25 L, and 0.02 L < d2 < = 0.25 L. A high bias value is used in the middle region, so that high photoelectric conversion efficiency of the battery piece can be kept; the edge area has a proper size, and the edge area is subjected to laser-assisted sintering by using a relatively low bias value, so that the problem of EL edge blackening can be relieved and even solved.

The present invention relates to an ultra-thin light-emitting diode (LED) electrode assembly, a manufacturing method of the ultra-thin LED electrode assembly, and a transfer film of an ultra-thin LED used for manufacturing the ultra-thin LED electrode assembly and relates to an ultra-thin LED electrode assembly in which a plurality of LED elements are simultaneously transferred using a laser-assisted multi-chip transfer printing method to form and pattern the LED elements, thereby preventing process defects caused by omission of the LED elements during transfer and deviation thereof from an electrode line, and defects such as dark spots caused in an LED display, a manufacturing method of the ultra-thin LED electrode assembly, and a transfer film of an ultra-thin LED used for manufacturing the ultra-thin LED electrode assembly.

The invention discloses a liquid nitrogen cooling and laser heating collaborative auxiliary cutting device and a cutting method thereof. The device comprises a laser heating system, a liquid nitrogen cooling system, a cutting system, a tool temperature monitoring system and a control system. Laser emitted by the laser heating system is focused on a to-be-machined area of a workpiece in front of a cutting edge after transmitting through the cutter body; the liquid nitrogen cooling system accurately sprays liquid nitrogen to the cutting edge area of the tool through a heat insulation liquid supply pipeline and a nozzle which are integrated in the tool rest. The control system dynamically and synergistically adjusts the laser output power and the liquid nitrogen injection flow based on a temperature signal sent by a thermocouple embedded in the cutter. According to the device, parallelism of the two processes of laser heating of a workpiece and liquid nitrogen cooling of a tool is achieved in space, dynamic matching and accurate balance of laser heating and liquid nitrogen cooling are achieved in time, and the problems that in laser-assisted cutting, the tool is prone to thermal damage, the cooling efficiency is low, and a thermal field is out of control are effectively solved.

The invention relates to the technical field of hybrid bonding, in particular to a laser-assisted hybrid bonding interconnection method, which comprises the following steps of: S1, processing the surface of a wafer to enable the to-be-bonded surface of the wafer to be flat; s2, cleaning a to-be-bonded surface of the wafer, and removing organic pollutants and an oxide layer; s3, aligning and fitting the surfaces to be bonded of the two wafers; s4, enabling the to-be-bonded surfaces to comprise dielectric layers and metal interconnection points, irradiating the dielectric layers with infrared laser, and carrying out the interconnection of the dielectric layers of the two to-be-bonded surfaces; and S5, the metal interconnection points are heated by blue laser, and the metal interconnection points of the two surfaces to be bonded are interconnected. In the hybrid bonding stage, the infrared laser and the blue laser are used for bonding the dielectric layer and the metal interconnection point respectively, partitioned irradiation and differentiated heating of the metal interconnection point and the dielectric layer are achieved, the problems of interface warping, microcracks and other thermal damage are effectively avoided, and the interconnection quality and the packaging reliability are improved.

Method for creating an electrode on a substrate using a laser assisted deposition process. A metal paste is printed and dried on the substrate to form a conductive layer, and by 2D or 3D inspection, the dimensions of the conductive layer are measured. The substrate is subject to a pretreatment process so as to increase adhesion and / or conduction of the conductive layer to the substrate. An electrode that is produced according to the present method may be used in flexible devices.

The utility model relates to a laser-assisted rolling work station which comprises a rolling work head, a laser work head, an adjustable support, an intelligent robot, a robot control cabinet, a main control cabinet, a laser device, a cooling system and a control screen. The laser working head is in adjustable mechanical connection with the rolling working head through an adjustable support and used for achieving laser auxiliary heating in the workpiece rolling process, and the rolling working head is mechanically connected with a mechanical arm of the intelligent robot. The laser working head, the robot control cabinet, the laser, the cooling system and the control screen are all electrically connected with the main control cabinet, and the intelligent robot is electrically connected with the main control cabinet through the robot control cabinet; the cooling system is connected with the laser through a liquid cooling pipe; the laser is electrically connected with the laser working head through an optical fiber; the laser-assisted heating device realizes laser-assisted heating in the rolling process, improves the rolling quality, is particularly suitable for rolling forming of high-strength and ultra-high-strength plates, and is high in safety and intelligent degree.

According to the double-laser-assisted MIG arc horizontal position welding method and device, through asymmetric narrow gap groove design (a3gt, a1gt and a2), the angle of an upper side groove is slightly larger than that of a lower side groove, the laser irradiation effect of an upper side wall can be improved, it is guaranteed that the upper side groove can be fully covered with laser and an arc, and the tendency of incomplete fusion defects is reduced; and meanwhile, the lasers are arranged in an asymmetric form, auxiliary lasers are obliquely emitted to the upper side wall of the groove from bottom to top to form an auxiliary laser molten pool, the height (d4) of the molten pool is widened, the problem that the molten pool on the upper side wall is prone to incomplete fusion under the action of gravity during horizontal welding of traditional laser-arc hybrid welding can be effectively solved, and the welding quality is improved.

The invention provides a laser-assisted rolling forming fillet radius control method based on a prediction model, and the method comprises the steps: carrying out an ultrahigh-strength steel laser-assisted rolling fillet experiment through designing a plurality of groups of laser power, scanning rate and light spot offset parameter combinations, measuring an actual fillet radius, and analyzing a quantitative relation between the actual fillet radius and process parameters. Based on this, a process parameter prediction model is established by using machine learning. When a specific target fillet radius is needed, reverse calculation can be carried out through the model, and a process parameter combination is directly obtained. The parameter combination is used for machining, and then a target part can be obtained. The quantitative prediction model is applied to the laser-assisted rolling forming process for the first time, accurate control over the small fillet radius of the ultra-high-strength steel is achieved, the fillet radius can be set as needed within the range of 1.0-2.5 times of the plate thickness, and the control precision of + / -5% is guaranteed. According to the method, the limitation of a traditional laser-assisted rolling forming process is broken through, the production efficiency and the part quality are greatly improved, and the method has wide industrial application prospects.

The invention relates to the field of power transmission line inspection, and discloses a laser-assisted focusing system of a power transmission line inspection camera, and the system comprises a laser ranging module, a visual sensor, a main control module, a target analysis module and a strategy optimization module, and the laser ranging module measures the distance between a target part on a power transmission line and a high-speed zoom lens in real time; the vision sensor synchronously collects definition characteristic data of a target part, and the main control module fuses the two types of data to generate an initial focusing parameter matrix and controls the high-speed zoom lens to adjust the focal length; the target analysis module determines a focusing strategy instruction based on the current detection task and a target priority database; the strategy optimization module corrects the initial parameter matrix according to the instruction, generates an optimized parameter matrix and feeds back the optimized parameter matrix to the main control module; the system improves the accuracy, pertinence and efficiency of focusing in a complex environment through the cooperation of multiple modules, and is suitable for the intelligent inspection work of a power transmission line.

The invention belongs to the technical field of welding robots, and particularly relates to a welding robot error correction method based on vision and laser data fusion. The method comprises the following steps: firstly, calibrating parameters on a dual-focus conjugate plane through a binocular camera, establishing a three-dimensional distortion correction model, constructing depth information in combination with a binocular triangle principle, completing laser light plane parameter calibration through an SVD (Singular Value Decomposition) method, and outputting large-field-of-view and high-depth-of-field laser-assisted vision measurement data; secondly, designing a three-dimensional target containing sphere characteristics, initially calibrating hand-eye parameters based on a fixed-point variable attitude method, establishing a hand-eye relationship and distance error identification model, and solving errors to realize robot-vision integrated online calibration; and finally, extracting a welding seam center point in a layered manner, planning a track through unit quaternion interpolation and a mixed curve, and writing an interface to output a welding control scheme. The problems that a traditional method is low in calibration precision and difficult in light bar extraction are solved, the measurement and positioning precision of the welding robot is greatly improved, and the high-precision welding requirement of a large component is met.

A robot including a robot arm having an end effector and a first laser diode provided on the end effector. The first laser diode is configured to emit a first laser light in a first direction. The robot further includes a camera configured to sense or detect first reflected light from an object upon which the first laser light contacts, and a processor configured to determine a clearance height between the end effector and the object using information from the first reflected light.

The invention discloses a low-loss preparation method of a single crystal diamond wafer. The low-loss preparation method comprises the following steps: A, carrying out laser ablation on the surface of a single crystal diamond crystal ingot; b, performing laser-assisted polishing on the surface; c, the ultrafast pulse laser is modulated into N modified light spots, all the modified light spots are made to scan at the corresponding depth positions according to a preset path at the same time, and a scanning face formed by the same modified light spot covers the cross section of the single crystal diamond crystal ingot in the 100 crystal face direction, n laser modified layers distributed in the direction perpendicular to the 100 crystal face in the single crystal diamond crystal ingot are formed after scanning; d, performing stress-induced separation on the monocrystal diamond crystal ingot; e, performing laser ablation on the cutting surface of the single crystal diamond wafer; and F, the cutting face is subjected to laser-assisted polishing. According to the low-loss preparation method of the single-crystal diamond wafer, the material loss of the single-crystal diamond crystal ingot can be reduced, and the wafer yield of the single-crystal diamond crystal ingot can be increased.

The invention relates to the technical field of steelmaking roller way overhaul construction in the metallurgical industry, in particular to a laser-assisted positioning method for bolt installation. Comprising the following steps that connection between a roller way and a driving motor and a dry oil pipe are removed, and the roller way is hoisted to a storage site; bolts and slurry piers on the roller bed foundation are cleaned, and all the bolts are ensured to be intervisible; and the laser locator Z prints an elevation line parallel to the plane of the roller bed foundation, the elevations of all the bolts are measured, and the unified installation elevation of the bolts is determined by taking the mode of the measured values and combining the original design drawing and the elevations of the front and rear sections of foundations and considering the foundation settlement and the running stability of the steel billets. According to the method, the longitudinal datum line, the transverse datum line and the elevation datum line are established through the laser locator X, the laser locator Y and the laser locator Z respectively, a three-dimensional space positioning network is formed, it is ensured that the bolts are accurately aligned in the horizontal position, the perpendicularity and the height direction, and personal errors and position deviation caused by a traditional lofting method are remarkably reduced.

The invention discloses equipment and a method for laser auxiliary heating, magnetic control arc combination and static magnetic field coupling, and relates to the technical field of refractory and high-melting-point metal and metal-based composite materials. The problems of difficulty in melting and non-uniform components in the prior art are solved. The equipment comprises a vacuum melting furnace, a split water-cooled crucible, a laser auxiliary heating device, an electric arc generating device, a magnetic control device, a static magnetic field generating device and a central control cabinet. The method comprises the steps of charging and vacuumizing, laser preheating, starting arc and double-magnetic-field coupling smelting, and coordinately regulating and controlling multiple parameters through a control cabinet so as to realize accurate control on flowing and solidification structures of a molten pool. Through multi-energy field time sequence coupling and space cooperation of laser, magnetic control electric arc and static magnetic field, active intervention on the molten pool dynamics and solidification process is achieved, component homogenization is promoted, the solidification structure is refined, and the method is used for preparing high-temperature alloy and refractory and active metal material cast ingots with uniform components and excellent structure performance.

The invention relates to conductive paste and a preparation method thereof, a solar cell and a preparation method thereof, and a photovoltaic module. The conductive paste comprises 82%-88% of metal powder, 1%-5% of glass powder, 8%-15% of an organic carrier, 0.5%-3% of a wave-absorbing material and 0.1%-1% of a polymer pore-forming agent, and the wave-absorbing material can absorb laser and release heat. During laser-assisted sintering treatment, the wave-absorbing material can efficiently absorb laser energy and instantly release heat, so that the surrounding polymer pore-forming agent is quickly gasified. After the polymer pore-forming agent is gasified, a cavity structure is formed in the conductive slurry, a multi-reflection cavity of light is formed, laser which is subsequently transmitted in is reflected for multiple times in the cavity, a light path is prolonged, and the absorption rate of laser energy is greatly improved. Due to the high absorptivity of the laser, the laser power required by good ohmic contact is formed, the energy consumption is reduced, and the damage to the surface of the battery is reduced.

The invention belongs to the technical field of lunar exploration equipment, and provides a step-by-step laser-assisted rock breaking drilling tool and method for a lunar-based extreme environment, the drilling tool comprises a conversion disc, a rock drilling tool and a laser head, the laser head and the rock drilling tool are integrated in the same drilling tool structure through the conversion disc, laser or mechanical rock breaking modes can be switched according to working conditions, and the laser or mechanical rock breaking modes can be switched according to the working conditions. And step-by-step rock breaking is realized. The drilling tool is suitable for extreme environments such as low gravity, vacuum, high dust and severe temperature change of the moon, has the advantages of being compact in structure, flexible in switching and high in energy utilization rate, and can be widely applied to tasks such as lunar soil stripping, lunar rock mining, underground structure detection and lunar base construction.

This invention provides a process for preparing a superhydrophobic surface of a titanium alloy plate using a laser assisted flow of ethanol. The process involves: rough milling the surface of the titanium alloy plate to remove the oxide layer; introducing flowing ethanol onto the milled surface; using a laser to pass through the flowing ethanol to fabricate a grid structure framework on the titanium alloy plate surface; removing impurities from the surface of the titanium alloy plate; and then modifying it with fluorosilane and performing heat treatment to achieve the superhydrophobic surface. This invention improves the hydrophobicity of the titanium alloy plate, making it easier to achieve superhydrophobicity, reducing water flow resistance, and improving water transport efficiency. Furthermore, this process is cost-effective, easy to control, and allows for stable automated production.

This application provides a solar cell and a method for fabricating the same. The method includes: providing a solar cell having a first side and a second side opposite to each other; the first side having multiple first grid lines and the second side having multiple second grid lines; obtaining the overlap index of each first grid line on the solar cell; classifying the first grid lines according to their overlap index to divide them into at least a first type of grid line and a second type of grid line; and performing a laser-assisted sintering process, wherein the process parameters used for the first type of grid lines are within a first parameter range, and the process parameters used for the second type of grid lines are within a second parameter range, wherein the maximum value of at least one parameter range in the first parameter range is less than or equal to the minimum value of the corresponding parameter range in the second parameter range. The solar cell and the method for fabricating the same provided by this application are at least beneficial for improving the yield and efficiency of solar cells.

The invention relates to a method and a device for regulating and controlling the structure performance of a nickel-based high-temperature alloy in pulse laser-assisted additive manufacturing, and belongs to the technical field of additive manufacturing. The method comprises the following steps: controlling the oxygen content in a sealed forming cabin of an LPBF forming device, and paving nickel-based high-temperature alloy powder on a substrate of the sealed forming cabin; and the pulse laser and the continuous laser are controlled to output laser beams, the pulse laser beams and the continuous laser beams are coupled in a polarization beam combination or wavelength beam combination mode, and after the focal length of the coupled laser beams is adjusted, the nickel-based superalloy powder on the substrate is subjected to fusion forming. According to the method, the pulse laser and the continuous laser are coupled into the coaxial light spots, in-situ synchronous disturbance on the molten pool in the LPBF additive manufacturing process is achieved, the solidification behavior of the nickel-based high-temperature alloy can be accurately regulated and controlled, epitaxial growth of columnar crystals is effectively broken, formation of fine isometric crystals is promoted, and the yield of the nickel-based high-temperature alloy is improved. And the anisotropy and cracking risk of the material can be reduced.

The invention provides laser-assisted diamond sheet sawing equipment, which relates to the field of laser-assisted diamond sheet sawing equipment, and comprises a base, a sawing table, a laser-assisted device, a diamond clamp, a ball precision lead screw linear sliding table module, a pressure sensor connecting unit, a high-precision linear sliding rail, a sliding block, a sliding rail bracket, a clamping device and a locking device, the heating effect of a laser auxiliary device is adopted, the mechanical property of a diamond material is reduced, the machining efficiency is improved, the machining quality of the diamond end face is improved, a sandwich structure (sapphire glass-diamond sheet-sapphire glass) is adopted for clamping the diamond sheet, the stress concentration of the end face during cutting is reduced, and the edge breaking resistance is improved; a micro pressure sensor is adopted to measure the pressure of interaction between a saw blade and a diamond, the pressure is adjusted through a ball precision lead screw linear sliding table module, and the pressure is kept to fluctuate within a certain range within a period of time during working. The diamond machining quality is improved, the edge breaking phenomenon of the end face of the diamond is relieved, and the machining efficiency is improved.

The application discloses a partitioned laser-assisted bonding system, comprising: a light source assembly for emitting light; at least one light guide, the light emitting end of which is arranged in a two-dimensional array, the light emitted by the light source assembly is incident to the light guide and is emitted from the light emitting end of the light guide after conduction; an optical assembly, the light emitted by the at least one light guide is incident to the optical assembly and is projected after passing through the optical assembly; and a light control assembly for controlling whether the light source assembly emits light to any light guide in the at least one light guide, so that the light source assembly emits light to a selected light guide; or the light control assembly is used for controlling whether any light guide in the at least one light guide emits light, so that the selected light guide emits light, the light spot formed by the light beam projected by the optical assembly is matched with a core particle to be bonded, and the arrangement shape of the light emitting end of the selected light guide is matched with the core particle to be bonded. The partitioned laser-assisted bonding system can more flexibly adjust the light spot corresponding to the projected light beam, and has higher flexibility and efficiency.

A beam-adjustable laser-assisted turning device, wherein a lathe X / Y-axis moving platform is fixed above a lathe moving guide rail; a lathe tool changing and positioning table is fixed above and on a side of lathe X / Y-axis moving platform; a beam-adjustable turning tool module is fixed on a side of lathe tool changing and positioning table; a beam fixing module is fixed above lathe X / Y-axis moving platform and on a side of lathe tool changing and positioning table; a laser beam emission module is fixed on a side of lathe tool changing and positioning table and beam-adjustable turning tool module through beam fixing module, and a laser emission port is maintained in a coaxial position with a laser beam directional hole; and a modulatable laser generator is fixed on a side of lathe bed and connected to a beam receiving port of laser beam emission module through a laser fiber.

The invention discloses a preparation method of a hemispherical micro-pit array on a copper surface. The preparation method comprises the following steps: processing a round pit array on the surface of a copper substrate by adopting laser; and the obtained copper substrate is subjected to chemical etching, and the hemispherical micro-pit array is obtained. According to the preparation method of the copper surface hemispherical micro-pit array, laser-assisted chemical etching is adopted, fixed-point etching is achieved, no template is needed, the hemispherical micro-pit array with the large depth-diameter ratio can be prepared, operation is easy, cost is low, efficiency is high, forming quality is high, defects are small, and the preparation method is suitable for batch production.

The invention discloses a dry and wet film compounding process, and relates to the technical field of patterning etching processes, and the process comprises the following steps: carrying out chemical micro-etching treatment on the surface of a base material to form a nano-scale pore structure; laser is adopted to assist in slitting the dry film material to form narrow dry film sections, and plasma passivation treatment is carried out on the slitting edge; the method comprises the following steps of: preparing a narrow dry film section with a preset width, and subsequently or concurrently, uniformly coating a photosensitive oil film on the surface of a base material through a coating process so as to form a continuous wet film layer on the surface of the base material; the narrow dry film sections obtained by slitting are respectively attached to the opposite side parts of the wet film layer; and in the exposure process, accurate alignment of an exposure pattern and a predetermined etching area on the material is realized by identifying an alignment Mark point mark on the dry film. The method has the effect of conveniently and clearly displaying the Mark points on the wet film so as to realize accurate positioning.

This application relates to the field of solar cell technology, providing a solar cell and its manufacturing method, a tandem cell, and a photovoltaic module, which at least improves the benefit of laser-assisted sintering of sectional cells in terms of contact resistance. The manufacturing method includes: providing a solar cell, the solar cell including opposing first and second surfaces; forming a first grid on the first surface and a second grid on the second surface; irradiating the first surface of the solar cell with a first laser and applying a first voltage to the first and second grids; cutting the solar cell to divide it into at least two sectional cells, and passivating the cut surfaces of the sectional cells; irradiating at least a portion of the first surface of the sectional cells with a second laser and applying a second voltage to the first and second grids; wherein the energy density of the second laser is less than the energy density of the first laser, and / or the second voltage is less than the first voltage.

The invention relates to the technical field of laser-assisted milling machining, and discloses a modularized self-adaptive laser-assisted machining device and method.The modularized self-adaptive laser-assisted machining device comprises a data acquisition module used for acquiring the three-dimensional shape of a workpiece before machining and acquiring physical parameters of the workpiece in the machining process; the electromechanical execution module is used for controlling the laser to pass through the to-be-machined area in the machining process; the laser light path module is used for emitting laser in the machining process and adjusting physical parameters of the laser; the data processing module is electrically connected with the data acquisition module, the electromechanical execution module and the laser light path module, and the data processing module is used for processing data acquired by the data acquisition module and generating double-path control instruction streams in parallel in a single processing period; and the laser light path module is driven to adjust laser parameters and adjust an advancing strategy of the electromechanical execution module.

The invention relates to a laser-assisted heterogeneous bonding stripping method, a heterogeneous bonding structure and an optical element, and the method comprises the following steps: preparing an acceptor substrate and a donor substrate which is provided with a first surface and a second surface which are opposite to each other; bonding the to-be-bonded surface of the receptor substrate with the second surface; focusing laser on a preset stripping surface in the donor substrate from the first surface, and performing laser scanning so as to sequentially form a plurality of modified points on the preset stripping surface; after the laser scanning is completed, stripping the donor substrate along the preset stripping surface to obtain a heterogeneous bonding structure comprising an acceptor substrate and a donor film bonded on the acceptor substrate, and the residual donor substrate; the heterogeneous bonding structure is prepared by the laser-assisted heterogeneous bonding stripping method. The optical element comprises the heterogeneous bonding structure. The method provided by the invention has the effect of realizing high-efficiency, high-quality and low-cost manufacturing of a normal-temperature, high-efficiency and lossless heterogeneous bonding structure.