131 results about "High energy laser" patented technology

The invention relates to the field of optical elements, in particular to a coating method of a high-precision intense laser optical lens. The film coating method comprises the following steps: step 1, substrate pretreatment; step 2, surface activation; 3, a preparation stage; step 4, coating treatment; and step 5, post-processing. According to the method disclosed by the invention, the problems of adhesive force, uniformity, damage resistance and the like of a traditional method in strong laser lens coating are solved through fusion of double-plasma cooperation and a self-adaptive gradient composite coating technology. The method provided by the invention can be used for customized production for different laser scenes, and is suitable for high-end fields such as high-energy laser industry, quantum calculation, infrared imaging and the like.

The invention discloses a welding robot with a protection function, the welding robot comprises a rack, a laser welding head is movably arranged on the rack, a bearing plate is arranged on the rack, two to-be-welded plates are placed on the bearing plate, the welding robot further comprises a pressing assembly and a protection assembly, the pressing assembly is arranged on the bearing plate, and the pressing assembly is used for fixing the two to-be-welded plates; the silica gel adhesive tape is connected with the two plates to be welded; the aluminum foil is arranged on the silica gel adhesive tape; the ceramic gasket is arranged on the aluminum foil; and the high-temperature-resistant surface layer is arranged on the ceramic liner. In the welding process, the aluminum foil, the ceramic gasket and the high-temperature-resistant surface layer are connected to a welding seam between the two plates to be welded through the silica gel adhesive tape. In the laser welding process through the laser welding head, the high-temperature-resistant surface layer can directly resist high-temperature corrosion generated by a molten pool and high-energy laser of the laser welding head, the burning through phenomenon is avoided, and effective protection is provided for welding of two plates to be welded.

The invention provides a performance prediction and control method for a multi-physics-field coupled high-energy laser system, and relates to the technical field of laser systems, and the method comprises the steps: obtaining optimized environment parameters; configuring laser system parameters; determining turbulence compensation parameters and laser energy distribution data; determining turbulence compensation control parameters at the current moment; controlling a deformable mirror of the high-energy laser system based on the turbulence compensation control parameters; determining optical element temperature field data, optical element deformation and wave aberration variation based on the laser system parameters and the laser energy distribution data; determining task feasibility of the current task based on the optical element temperature field data; under the condition that the task feasibility is feasible, determining a target dynamic damage threshold; and determining a performance prediction result of the high-energy laser system. According to the technical scheme, control and performance prediction are carried out on the high-energy laser system based on multi-parameter cooperation in the coupled physical field, the environmental adaptability and the parameter configuration efficiency are improved, and closed-loop compensation can be carried out in real time.

The invention discloses a method for identifying a bad plate in a substrate, belongs to the technical field, and realizes high fusion of bad plate identification and a production process through a precise marking process and a dynamic data collaboration mechanism. A high-energy laser carbonization technology is adopted, an irreversible permanent mark is formed on the surface of a substrate, and a microscopic carbonized layer structure and a base material form remarkable optical contrast. The mark can still keep stable gray scale characteristics under strong light irradiation, and the problem of misrecognition caused by the fact that a traditional ink mark is prone to falling off and pollution is solved. Meanwhile, the closed-loop control of laser parameters ensures that the marking area is only modified within the depth of 0.1 mm of the surface layer, substrate warping or inner layer circuit damage caused by diffusion of a heat affected zone is avoided, and the reliability and safety of marking of the damaged plate are guaranteed from the physical level.

The invention provides a high-energy laser damaged material surface temperature monitoring system and method.The high-energy laser damaged material surface temperature monitoring system comprises a high-energy laser light source, a homogenizing optical fiber beam expanding system, a material sample fixing system and a material surface temperature monitoring system, and laser generated by the high-energy laser light source is output after being homogenized and expanded by the homogenizing optical fiber beam expanding system; the output homogenized high-energy laser acts on an irradiation target material sample after beam expansion, the material surface temperature monitoring system comprises a high-precision target acquisition system, a binocular vision imaging system and a multispectral wavelength temperature measurement system, and the target acquisition system is used for acquiring infrared heat radiation on the surface of a laser irradiation material; the binocular vision imaging system is used for realizing three-dimensional thermal imaging of the laser irradiation target material sample piece according to the collected infrared thermal radiation, and the multispectral wavelength temperature measurement system is used for realizing three-dimensional temperature measurement of the laser irradiation target material sample piece according to the three-dimensional thermal imaging. By applying the technical scheme of the invention, the technical problem that three-dimensional temperature monitoring is difficult to realize in the prior art is solved.

The invention discloses an airport intelligent laser bird repelling system and method based on multi-sensor fusion, and relates to the technical field of airport safety protection, and the system comprises a flying bird coarse positioning module, a flying bird fine tracking module, a flying bird laser repelling module and a remote monitoring module. The flying bird coarse positioning module adopts a phased array millimeter wave radar to carry out wide area scanning on a designated area of an airport, and outputs coarse positioning coordinates of a flying bird. Then, the bird fine tracking module uses a laser scanning radar and a medium-wave infrared camera to cooperatively carry out high-precision tracking scanning on the bird in the target area, and outputs the three-dimensional coordinate of the bird in real time. The remote monitoring module displays an airport area map and a bird infrared image on an indoor console in real time, and provides a manual control interface for an operator at the same time. And finally, the bird laser repelling module controls a high-energy laser transmitter of the bird repelling machine to output a high-energy pulse laser beam to a bird body according to the three-dimensional coordinates of the bird, and the bird in the target area is accurately repelled.

The invention provides a forming method for a curved frame component of an aircraft made of a thermoplastic composite material, which comprises the following steps: S1, based on a mathematical model of the curved frame component, laying the thermoplastic composite material through an automatic fiber laying process to form a preformed body flat plate; s2, the preformed body flat plate is cut to the preformed body size required by mold pressing along the laid positioning tows; and S3, the preformed body flat plate is subjected to mold pressing through a hot mold pressing process to form the curved frame component in a preset shape. According to the scheme, the thermoplastic composite material preform flat plate is prepared by adopting an automatic fiber placement process, so that automatic and accurate positioning of fibers can be realized, and interlayer bonding stability can be realized through high-energy laser heating. In addition, the material sheets can be accurately positioned through the hot mold pressing process, and therefore rapid mold pressing forming of parts with complex characteristics is achieved.

The invention provides a puncture guide wire with foresight detection and penetration functions and an intelligent intervention system, and belongs to the technical field of medical minimally invasive intervention instruments. The energy conversion assembly is innovatively integrated at the head end of the puncture guide wire, and the dual functions of A-type ultrasonic foresight detection and ablation are achieved through electric or optical path driving. The system supports two implementation modes: in an electroacoustic mode, a piezoelectric micro-electro-mechanical system is used for realizing ultrasonic transceiving and ablation; in the opto-acoustic mode, ultrasonic waves are generated by utilizing the opto-acoustic effect of the optical fiber, echoes are detected by utilizing optical interference, and ablation is performed by utilizing high-energy laser or ultrasonic waves. According to the invention, blood vessel, heart and occlusion lesions are identified based on a waveform fingerprint algorithm of time domain echoes, and a high-energy mode can be dynamically switched to assist in penetrating tissues. The problems that in an existing minimally invasive interventional operation, in-vitro image guiding precision is insufficient, a traditional IVUS / ICE catheter is too large in size and high in cost, and a traditional guide wire lacks active detection and auxiliary penetrating capacity when facing complex lesions are solved.

The invention discloses a local area wireless laser communication-distance measurement-energy transmission integrated terminal of a space on-orbit service platform, and belongs to the technical field of optical electromechanical system integration and precision measurement. The terminal integrates three functions of high-speed data communication, high-precision laser ranging and efficient wireless energy transmission. The core innovation lies in that unified optical aperture sharing for transmitting high-energy laser beams and receiving weak signals is realized through a beam splitter and an optical path multiplexing architecture, and the size and weight of the system are remarkably reduced while signal isolation is ensured. The terminal measures the laser round-trip time in real time in the communication process by using the high-stability clock reference of the precise timing unit, directly calculates the relative displacement between the nodes, and can realize the non-contact high-precision deformation sensing of the platform structure. Besides, the system supports intelligent switching between a communication / ranging low-power mode and an energy transfer high-power mode, dynamic flexible allocation of on-orbit energy is realized, and high-precision, high-reliability and high-autonomy task requirements of space services are met.

The present invention relates to the field of high-energy laser counter-UAVs. The present invention provides a method and system for collecting and analyzing UAV damage effectiveness data. The method comprises: obtaining UAV damage effectiveness data using a video data acquisition device and a temperature data acquisition device; wherein the video data acquisition device and the temperature data acquisition device are carried into the air by a UAV; and calculating the acquired UAV damage effectiveness data. The UAV damage effectiveness data calculation process includes image-based energy effectiveness calculation and temperature measurement-based effectiveness calculation; confidence weights are preset for the image-based energy effectiveness calculation and the temperature measurement-based effectiveness calculation; and a total estimated value of the UAV damage effectiveness data is calculated using the preset confidence weights. The present invention has the characteristics of low cost, good practicality, excellent timeliness, robustness, and strong scalability.

The invention discloses a high-energy laser electrified deicing method and system for a post insulator of a transformer substation based on material classification, and the method comprises the steps: classifying the post insulator of the transformer substation according to materials, and adjusting the parameters of a high-energy laser according to the number threshold values of photons in unit area corresponding to different materials; safe and efficient electrified deicing of the post insulator of the transformer substation is realized, and damage to an insulator material caused by improper laser energy is avoided.

The invention provides a crystallization method of an amorphous nano-film, which comprises the following steps of: depositing the amorphous nano-film in a reaction cavity by adopting an atomic layer deposition method, performing high-energy laser annealing treatment on the surface of the amorphous nano-film, and converting the amorphous state in the amorphous nano-film into a crystalline state to prepare a crystalline nano-film. According to the method disclosed by the invention, controllable preparation of a crystalline functional film is realized by introducing laser annealing treatment after ALD deposition, a crystallization method of the amorphous nano film is constructed, the problems of poor crystallinity and limited performance after ALD film formation can be effectively solved, and a reliable, efficient and controllable film preparation scheme is provided for a next-generation high-performance device.

An arrayed high-energy laser counter-UAV (unmanned aerial vehicle) test method and apparatus are provided, relating to the technical field of UAV tests. The method includes the following steps: preparing a test apparatus and a UAV; conducting a laser counter-UAV test; observing an ablation process and analyzing an ablated morphology of the UAV to obtain a radius and ablation depth of a tested ablation area of the UAV; performing finite element simulation on a test process to obtain a radius and ablation depth of a simulated ablation area of the UAV; and comparing the radii and ablation depths of the simulated and tested ablation areas of the UAV, adjusting finite element simulation parameters to make a simulation result coincide with a test result, and deriving an ablation depth-time variation curve of a key point in the simulated ablation area.

The utility model discloses a laser obstacle removing device, which relates to the technical field of laser equipment, and comprises an optical ranging aiming lens, a laser emission lens, an electric holder and a control panel, and the optical ranging aiming lens and the electric holder are respectively arranged at the top and the bottom of the laser emission lens. The optical ranging aiming lens is used for measuring the distance between the laser obstacle removing device and a target, a distance signal is used as a focusing parameter to guide the laser emitting lens to focus, the optical ranging aiming lens transmits a target image back to the control panel, and the laser emitting lens is used for bearing input and output of high-energy laser. The focus of a laser beam is adjusted through a distance signal of an optical ranging aiming lens, the electric holder has the rotating freedom degree in the horizontal direction and the vertical direction, the functions of system rotation, aiming, laser focusing and emitting and the like are achieved through a control panel, and the problems that a laser obstacle removing device is complex in structure, not attractive in appearance, incomplete in function and high in practicability are solved. And the operation is troublesome.

The invention discloses an on-line measuring device and method for a high-energy broadband pulse laser light field and a far-field focal spot. Broadband pulse laser generated by a high-energy laser device is processed by an intensity attenuation system and then reaches a light splitting element; the light beam penetrating through the spectroscope penetrates through a coding plate, the coding plate is used for carrying out coding modulation on the light beam, and then a table array light intensity detector is used for recording the intensity of a single-frame diffraction image formed after modulation of the coding plate; and the spectral data of the light beam reflected by the light splitting element is recorded by a spectral analysis unit. The near-field complex amplitude (intensity and phase) distribution of a to-be-measured high-energy broadband pulse laser light field can be accurately reconstructed through a multi-mode light field reconstruction algorithm by means of single-frame diffraction image intensity recorded on line by an area array light intensity detector and single-time spectrum data recorded on line by a spectrum analysis unit, and meanwhile far-field focal spot distribution can be obtained through inversion. The method has the advantages of simple structure, low cost, strong environment anti-interference capability and the like.

The invention relates to the technical field of cooling of optical equipment in a high-energy laser system, in particular to a water-cooling optical mirror bracket, which is characterized in that an annular or spiral annular water channel matched with the circumferential heat dissipation characteristic of a lens is arranged in a mirror bracket body, and two ends of the water channel are communicated with the outside through connecting ports in the side wall of the mirror bracket. Coolant flows through the water channel to efficiently take away heat. The design does not need an additional water cooling plate, reduces the weight of the mirror bracket, saves the optical space, can be compatible with various coolants such as liquid and gas, is adaptive to the temperature range from the liquid nitrogen temperature to 600 DEG C and the pressure environment from low vacuum to 10 atmospheric pressures, and can be made of alloys such as aluminum, steel and copper. The machining modes comprise 3D printing, casting, friction welding and the like, and the method is suitable for spectacle frames with different thicknesses. The design is uniform in cooling, can guarantee the optical property of the lens and stable light spot quality, and is wide in application range.

The application discloses a kind of middle-long wave infrared shallow slot deep broadband all-dielectric reflection grating and preparation method thereof, belong to the technical field of infrared optical device.The grating is composed of bottom grating film and top shallow slot deep diffraction grating, bottom grating film and top shallow slot deep diffraction grating cooperate and modulate Bloch mode reflection phase, and the diffraction efficiency of-1 level is higher than 99% in 3-14 μm wave band range.Preparation method includes: sequentially depositing functional film layer on substrate, and forming shallow slot deep grating structure by patterning etching.The application adopts the design of all-dielectric shallow slot deep grating, avoids the preparation difficulty of middle-long wave infrared diffraction grating, and has the performance of wide angular spectrum, ultra-wide band, high diffraction efficiency and high damage threshold.The application provides a solution to the preparation condition limitation of middle-long wave diffraction grating, accelerates the application of diffraction grating in middle-long wave infrared, and promotes the development of middle-long wave infrared high-energy laser spectrum beam combination system, ultra-short laser pulse compression and spectrometer system.

The invention provides a direct bonding method based on laser surface activation and repair. The direct bonding method comprises the steps of wafer cleaning, high-energy laser processing, low-energy laser processing and wafer bonding. According to the method, atoms on a wafer bonding interface are activated by using high-energy laser, diffusion of the atoms is promoted, surface dangling bonds are opened, and favorable conditions are created for the subsequent bonding process. Then, a low-energy laser is used to repair an amorphized or lattice damaged layer of the bonding interface. The invention provides a bonding method which can be carried out at room temperature and can realize lattice repair while activating. According to the method, additional annealing treatment is not needed, laser treatment only acts on the surface of the wafer, meanwhile, the specific rapid temperature rising and falling characteristic of laser processing is fully utilized, the influence on the wafer is strictly limited to the extremely shallow surface layer of the wafer, the overall thermal budget is reduced, meanwhile, thermal damage to the wafer body is avoided, and the wafer quality is improved. The method is especially suitable for high-quality bonding preparation of heat-sensitive devices. Besides, the method has excellent compatibility, and can be combined with the prior art of plasma activation, surface activation bonding and the like to improve the flexibility of the bonding process and the product quality.

The application provides a deep ultraviolet double-waveband femtosecond laser processing objective lens, relates to the optical technology field, and the processing objective lens comprises a first lens group, a second lens group, a diaphragm and a third lens group. The femtosecond laser emitted by a laser light source passes through a collimation and beam expansion optical system composed of various lens groups, is converged on an image plane through the objective lens, the processing of the femtosecond laser is realized, higher processing precision is realized by adopting a shorter deep ultraviolet wavelength, steep and burr-free processing boundaries are obtained, the working distance of the objective lens is greater than 11 mm, the adhesion of material chips in the laser processing process can be effectively reduced, the service life of the objective lens is increased, the damage of high-energy laser to the objective lens is avoided, and the technical problem that the existing processing system is difficult to obtain higher processing precision by using a shorter deep ultraviolet wavelength is solved.

The invention belongs to the field of functional ceramic materials, and relates to a boron nitride fiber-based ceramic material as well as a preparation method and application thereof. The material is prepared by calcining BN powder at 700-900 DEG C for 12-48 hours, and the content of B2O3 is 1t; the BN powder is of a fibrous structure, the radial width of the BN powder is 1-5 microns, and the length-diameter ratio of the BN powder is gt; 10: 1. The preparation method comprises the following steps: dissolving a B source and an N source in a low-hydroxyl-density cosolvent-water mixed solvent, evaporating the solvent or cooling to obtain a precursor product, calcining the product in NH3-N2 to obtain fibrous BN powder, and calcining the molded powder to obtain the BN fiber-based ceramic material. The material has good high-temperature oxidation resistance, thermal shock resistance, heat conduction anisotropy and ultraviolet-visible-near infrared band hyperspectral reflectivity, and can be applied to a thermal protection layer of a spacecraft, a thermal protection layer of a high-temperature pipeline and a reactor or a high-energy laser protection layer.

The application discloses a method for isolating GaN-based devices, wherein a Fe film is evaporated on a region requiring device isolation on a surface of a GaN HEMT structure, a pulse laser is used to heat the Fe film covering region, laser pulse energy is reasonably controlled, Fe is accelerated to diffuse into the sample and the sample is recrystallized, so that Fe is incorporated into the sample lattice. Fe impurities are deep level impurities in GaN-based materials, and doping Fe in the region requiring isolation can form a high resistance state, so that the purpose of device isolation is achieved. The method can reduce the defect density of the isolation region by recrystallizing the sample through high-energy laser pulses and introducing Fe impurities in the recrystallization process.

This application discloses a method for manufacturing a CPG filter element, comprising: processing a CPG composite filter element, the CPG composite filter element comprising a core block and a CPG matrix integrally formed on the outside of the core block, the core block being resistant to the environment of the oligonucleotide synthesis process and at least partially exposed; and laser marking the exposed portion of the core block to form unique identification information for the CPG composite filter element. In subsequent oligonucleotide solid-phase synthesis operations, the CPG composite filter element of this application can be tracked based on the unique identification information on the core block, and traceability of the synthesis based on the CPG composite filter element can also be achieved. Furthermore, the embodiments of this application avoid the problems of easy detachment, corrosion, or blurring of markings due to traditional marking methods, leading to information loss, and also avoid the destruction of the integrity of the unique identification information during the high-temperature sintering process of the CPG filter element or the destruction of the pore structure of the CPG filter element by high-energy lasers.

The present invention belongs to the technical field of efficient fragmentation of hard rocks. Provided are a vehicle-mounted system and method for controlling high-energy laser-induced rock fracturing, the method comprising: by means of a second image acquisition and analysis unit, acquiring surrounding environment information of an electric flat car during movement; on the basis of a stored motion path of the electric flat car and the surrounding environment information, an electric flat car control unit generating a first control instruction; the electric flat car controlling the electric flat car to move to a designated position for rock fragmentation; by means of a first image acquisition and analysis unit, acquiring the type of a rock to be fragmented, and after a laser emission unit is started, acquiring real-time condition information of laser-induced rock fracturing; a laser control unit acquiring a laser emission parameter corresponding to the type of the current rock to be fragmented, and upon receiving the real-time condition information of laser-induced rock fracturing that is acquired by the first image acquisition and analysis unit, adjusting the laser emission parameter, and generating a second control instruction on the basis of the laser emission parameter; and the laser emission unit controlling the laser emission unit to start emitting a laser for rock fragmentation.

The application discloses a resin-based high-energy laser protection composite coating and a preparation method thereof. The resin-based high-energy laser protection composite coating comprises a three-layer structure, and a porous heat insulation layer, a heat dissipation layer and an ablation layer are sequentially arranged on the surface of a base body from bottom to top. The porous heat insulation layer comprises a high-temperature-resistant resin binder and hollow microspheres. The heat dissipation layer comprises a high-temperature-resistant resin binder and a heat-conducting material. The ablation layer comprises a high-temperature-resistant resin binder, a high-melting-point carbide ceramic powder, a low-melting-point carbide ceramic powder and a short-cut fiber powder. The preparation method is simple and easy to implement and has low cost. The ablation, heat dissipation and heat insulation effects of different functional layers are used to achieve the purpose of protecting the base body material. The prepared composite coating has excellent laser protection performance and can be applied to a high-energy laser irradiation environment.

A high-energy laser processing system (100) comprising: a light source (102) for providing a CW initial laser signal having a spectral linewidth in the range of 15 to 250 GHz; an optical modulator (104) which can be configured in a CW operating mode for transmitting the unmodulated CW initial laser signal and in a pulse operating mode for forming a pulsed initial laser signal by applying amplitude modulation; an optical splitter (106); an optical amplifier (108) for amplifying the seed laser signal to an average optical power in the range of 800 W to 5 kW; a phase actuator (110) which can be configured to adjust the phase of the seed laser signal; an optical beam combiner (112); a phase control device (116, 310) which can be operated to transmit a phase control signal configured to cause the phase actuator to adjust the phase of the seed laser signal and minimize the phase difference between seed laser signals in the combined laser signal output from the beam combiner; and a controller (118) for transmitting one or more control signals configured to cause the optical modulator to switch between the operating modes.

A counter high-energy laser system directs high-intensity laser radiation back to a threat laser in the form of an ultra-short optical pulse (USP). The retro-directed USP induces permanent internal optical damage in the threat laser, thus disabling the threat by exploiting the very high optical gain at the source of an incoming laser thereby causing an injected pulse to grow exponentially in energy and peak power within the threat laser optical train until it reaches a damaging threshold. The existing optical energy from the threat laser system and stored in the laser beam from threat system is exploited thereby enabling the size, weight, and power of the counter laser system to be significantly reduced. The wavelength of the counter pulse is automatically matched to the threat.

A high energy laser (HEL) weapon system for counter-UAS (C-UAS) use comprises a fully self-contained laser system including a power supply, thermal management, high-capacity batteries, and integrated radar and electronic warfare subsystems.

The utility model belongs to the technical field of emitting device manufacturing, and particularly relates to a high-energy laser generating device which comprises a workbench, a first laser device, a second laser device, a first convex lens, a second convex lens and a third convex lens, light emitted by the first laser device is parallel to light emitted by the second laser device, and the first convex lens is arranged on the light emitting side of the first laser device. The first convex lens is arranged on the light emitting side of the first laser, the second convex lens is arranged on the light emitting side of the second laser, and light emitted by the first laser is collinear with the central axis of the first convex lens. Two common lasers can be combined to form a high-energy laser, so that the problem of high cost caused by direct purchase of the high-energy laser is solved.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a pole piece manufacturing method which is characterized by comprising the following steps: (1) cutting at least two discontinuous parallel straight lines on a pole piece through ultrasonic die cutting; and (2) punching a tab in an area, which is not subjected to ultrasonic die cutting, of the pole piece through a die. According to the pole piece manufacturing method, the pole piece manufacturing method of ultrasonic die cutting and die punching is adopted, and the slitting cost is low. And moreover, the processing temperature of ultrasonic die cutting and die punching is relatively low, the bead melting problem caused by high-energy laser slitting is avoided, and the safety of the battery is improved.

A system for measuring a laser beam profile of industrial high-power lasers. The setup incorporates UV fused silica windows for beam attenuation and a combination of reflective and absorptive neutral density filters to further reduce beam intensity. Achromatic doublet lenses refocus the attenuated beam, to create a magnified low-power replica suitable for high-resolution measurements. This configuration allows for continuous real-time monitoring of the laser caustic parameters and the laser beam profile along its optical axis.