18 results about "High energy laser" patented technology

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 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.

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 application relates to the technical fields of mining engineering and laser application, and particularly relates to a coal mine high-energy laser cutting and thermal shock synergistic pressure relief and permeability enhancement method, comprising the following steps: S1, collecting the methane concentration value, the environmental temperature value and the pose coordinate value of the operation terminal in the drill hole, digitally encoding and clock synchronously marking the collected analog signals, and generating the environmental state monitoring data. In the present application, by comparing the physical feedback characteristics of the rock after excitation with the preset ideal cracking state, the core operation parameters such as laser output energy and scanning speed are automatically corrected by using the deviation calculation, the adaptive and rapid response of the operation process to the hardness and material changes of the rock stratum is realized, the problem of rock breaking efficiency reduction or slag blockage caused by sudden change of geological conditions is effectively solved, and the stability and efficiency of the non-contact cracking operation in the complex environment are significantly improved.

This invention discloses a method for optical interconnection of silicon photonic chips based on meniscus-guided additive manufacturing, belonging to the field of silicon photonic chips. The method includes: in a controlled gas environment, using a printing material system containing polymers and organic solvents, stretching a liquid bridge between the optical interfaces of two silicon photonic chips using microneedles, and guiding the movement of the meniscus to form a polymer filament connecting the two ends. Subsequently, the solvent evaporates and solidifies, ultimately forming a free-space polymer optical waveguide spanning the chips. This method does not rely on high-energy lasers or adhesive application and washing processes, and is simple, low-cost, and highly efficient. The fabricated waveguides can achieve controllable spans from hundreds of nanometers to hundreds of micrometers in diameter and tens of micrometers to millimeters in length. The end faces can be optimized into controllable transition structures, effectively improving mode matching and coupling efficiency. It features low insertion loss, high alignment tolerance, and good mechanical stability, making it suitable for high-density silicon photonic packaging and heterogeneous integration.

The application provides an integrated honeycomb sandwich structure resistant to high-energy laser ablation, which comprises a honeycomb core, a composite material skin covering the front surface of the honeycomb core and an aluminum alloy skin covering the back surface of the honeycomb core; the composite material skin comprises a high reflectivity layer located at the outermost layer, a high conductivity layer located at the middle layer and an aluminum alloy layer located at the innermost layer; the honeycomb core is a honeycomb core filled with a light ablation material and a thermal insulation material, which comprises a honeycomb core base, a light ablation material layer covering the front surface of the honeycomb core base and in contact with the back surface of the aluminum alloy layer and a light thermal insulation material layer covering the back surface of the honeycomb core base; the aluminum alloy skin is in contact with the back surface of the light thermal insulation material layer. The application has reasonable structure design, is safe and convenient to prepare, can meet the design requirements of lightweight structure and greatly enhances the ablation resistance of the integrated honeycomb sandwich structure.

To provide surface-treated metal components that further improve the stability of the surface structure and the overall surface quality. [Solution] The metal substrate has a smooth metal base layer 10 formed by polishing the surface of a metal substrate, and a laser engraved layer 20 provided on the metal base layer, which has a microstructure texture 21 with texture depth formed by high-energy laser processing, and whose surface is divided into a texture region 22 having a microstructure texture and a non-textured region 23 not having a microstructure texture, and which is chemically polished to remove slag generated by laser processing and the heat-affected layer formed by laser processing, and an anodic oxidation layer 30 provided on the laser engraved layer, in which an oxide film 31 that continuously and completely covers the texture region and the non-textured region is formed in one step by a single anodic oxidation treatment.

This invention provides a method and apparatus for measuring the intensity distribution of high-energy laser light, relating to the field of laser intensity measurement technology. The apparatus includes: a beam sampling element, a sampling material, a sampling material control platform, a damage spot monitoring system, and a data processing terminal. The beam sampling element is used to sample a single beam of fixed diameter from the high-energy laser to be measured, obtaining the incident laser. The sampling material control platform, connected to the sampling material, is used to adjust the incident angle of the incident laser onto the surface of the sampling material and to adjust the position of the incident laser acting on the surface of the sampling material. The damage spot monitoring system is used to monitor the radius of the laser damage spot on the surface of the sampling material. The data processing terminal determines the intensity distribution of the high-energy laser to be measured based on the prior data of the damage threshold of the sampling material and the radius of the laser damage spot. This invention achieves direct measurement of the intensity and intensity distribution of high-energy laser light without using a beam attenuation element, providing intuitive results and simple operation.

This invention discloses a projectile-type, retrievable laser loitering system and method, relating to the field of aerospace technology. The system includes: a flight control module, a communication interaction module, a navigation and guidance module, a perception and warning module, a command and control decision-making module, a servo-tracking module, and a high-energy laser module. The perception and warning module is used to detect environmental information in the monitored area; the command and control decision-making module is used for centralized management, information fusion, and intelligent decision-making; the servo-tracking module is used to acquire, track, and aim at threat targets and send aiming-ready commands; the high-energy laser module is used to non-destructively strike key parts of the threat target along the path to the threat target when the servo-tracking module sends the aiming-ready command; and the navigation and guidance module is used to generate a path to the threat target. This system improves the safety of the aircraft.

The utility model provides a scanning head impurity filtering device for high energy laser processing relates to an impurity filtering structure, including collimating lens group, total reflection mirror, mirror group, field mirror mirror group being installed in the casing, after laser enters, collimating lens group collimates light and shoots to the mirror head to make light transfer and shoot to mirror group, and then via mirror group will light beat into high -speed scanning fan -shaped light, this fan -shaped light passes through field mirror mirror group shaping again to make fan -shaped light focal point can fall on projection plane, there is gap for forming air current channel between casing and mirror group, casing is installed with filter device in the gap in the interval, and the filter screen of filter device is used for the impurity of air current to pass through is blocked, the utility model discloses a reasonable air current channel and filter device, effectively reduce the impurity adhesion on the surface of optical assembly, improve the reliability and processing quality of system, and the device simple structure, easy to manufacture and maintenance has broad application prospect.

Disclosed is a vehicle-mounted high-energy laser-induced rock fracturing control system and method. The method includes: acquiring, by a second image acquisition and analysis unit, surrounding environment information of an electric flat cart; generating, by an electric flat cart control unit, a first control command; controlling the electric flat cart to move to a designated rock crushing position; acquiring, by a first image acquisition and analysis unit, the type of the rock to be crushed, and acquiring real-time condition information of laser-induced rock fracturing after activating a laser emission unit; acquiring, by a laser control unit, a laser emission parameter corresponding to the current type of rock to be crushed, adjusting the laser emission parameter, and generating a second control command according to the laser emission parameter; and controlling the laser emission unit to activate to emit a laser to fracture the rock.

This invention provides an intelligent sensing reconfigurable metasurface laser protection structure and its fabrication method. The intelligent sensing reconfigurable metasurface laser protection structure comprehensively utilizes stealth coating materials, smoke stealth materials, and ablation-resistant materials, combined with ultrasonic motor technology, to propose an intelligent metasurface high-energy laser-resistant structure with four functions: a camouflage layer, an ablation-resistant layer, a sensing layer, and a driving layer. It achieves full coverage of the three-stage laser protection theory: "first, to remain undetected; if detected, to avoid being hit; if hit, to avoid being damaged." This results in a protective structure that resists high-energy lasers, extends the protection time against high-energy lasers, and improves the battlefield survivability and service performance of weapons and equipment. The intelligent sensing reconfigurable metasurface laser protection structure of this invention can be used in various service equipment across land, sea, air, and space facing potential laser weapon threats.

This invention relates to the field of thermal management technology for high-energy laser weapons, and particularly to an integrated phase-change cold storage liquid cooling system and its usage method for high-energy laser weapons. The system includes a laser heating unit, a main circulation pump, a water tank, a compressor-type refrigeration unit, an integrated phase-change cold storage heat exchanger, a first switching valve, a second regulating valve, a temperature sensor, and a controller. The first switching valve is connected to the outlet of the main circulation pump, the inlet of the refrigeration unit, and the inlet of the laser heating unit; the second regulating valve is connected to the outlet of the laser heating unit, the inlet of the cold storage heat exchanger coolant, and the inlet of the water tank; the outlet of the refrigeration unit is connected to the inlet of the cold storage heat exchanger coolant, and the outlet of the cold storage heat exchanger coolant and the outlet of the water tank are both connected to the inlet of the main circulation pump; the controller is connected to each valve and the temperature sensor. This invention achieves rapid switching between cold storage and cold release modes under single-pump drive through the coordinated control of two three-way valves, realizing closed-loop control of the laser heating unit temperature.

The application discloses a method for analyzing thermal blooming aberration with different truncation factors based on Zernike polynomials, and belongs to the technical field of high-energy laser atmospheric transmission and thermal blooming correction. Firstly, a thermal blooming wavefront phase distribution of a Gaussian beam after atmospheric transmission is acquired, and normalization processing is performed; then, mode decomposition is performed on the normalized wavefront by using Zernike polynomials, and Zernike coefficients of each order under different truncation factors are extracted; further, the evolution law of the structure characteristics and aberration components of the thermal blooming wavefront distortion with the truncation factor is quantitatively analyzed; based on a point spread function, a Strehl ratio is calculated, and a source energy transmittance is introduced to construct a target light intensity evaluation index, and the optimal truncation factor balancing the transmission efficiency and aberration suppression is determined through extreme value optimization; finally, the optimal truncation factor is converted into a hardware control instruction to drive a variable beam expander telescope or a dynamic diaphragm to perform physical adjustment. The application can effectively improve the peak target light intensity of the system under typical thermal blooming conditions.

The application provides a high-energy laser spot energy distribution measuring device and method based on a calorimetric array detector, and aims to solve the technical problem of thermal crosstalk among existing calorimetric array detector probes. The high-energy laser spot energy distribution measuring device based on the calorimetric array detector comprises a plurality of calorimetric probes with special structures and arranged in an array, a single channel of each calorimetric probe adopts a temperature difference detection mode, and is matched with a heat sink at the rear end to form a plurality of array-arranged heat transfer channels; all the channels share one heat sink, when heat is transferred to adjacent channels, the slow temperature rise of the heat sink will mainly cause the overall synchronous temperature rise of the probe structure, and the temperature difference detection mode can effectively eliminate the interference of the overall temperature rise, thereby effectively reducing the influence of thermal crosstalk among the channels on the measurement results.

The application discloses a portable high-energy laser anti-UAV system, which comprises a command control subsystem, an ATP subsystem, a laser source subsystem, a power supply subsystem and a packaging box subsystem, wherein the command control subsystem is used for receiving superior instructions to guide and track a target and control attack; the ATP subsystem is used for detecting and identifying a target, tracking and guiding the target and controlling high-energy laser attack on the target; the laser source subsystem is used for outputting high-energy laser for the system to attack a UAV target; the power supply subsystem is used for supplying power to the laser and other subsystems; and the packaging box subsystem is used for packaging the system after being disassembled, so that the system is convenient to carry. The application is based on the advantages of a large field of view, miniaturization and light weight of a transmission optical system, applied to the high-energy laser anti-UAV system, can reduce the precision size and weight of a coarse tracking structure, and combined with an air-cooled laser, can realize the portable anti-UAV system.

The utility model discloses a kind of welding jigs of sealing compression ring, the welding jig includes bottom plate, support, drive fixed base, driver and compression assembly;Support and drive fixed base are fixedly assembled on bottom plate, driver is assembled on drive fixed base, one end of compression assembly is connected with driver through connecting rod, the other end of compression assembly extends to the top of support;Groove is equipped on support, and groove is used to place sensor;Compression assembly is equipped with compression plate in one end close to support;Welding through-hole is formed in compression plate;Multiple protrusions extending to the direction of welding through-hole center are equipped in welding through-hole.The welding jig described above, the compression plate set in the front end of compression assembly is driven by driver to tightly compress sensor, and protrusion side channel in welding through-hole is shot into high-energy laser to weld sealing compression ring, greatly improve the accuracy of sealing compression ring welding, and ensure that the sealing of welding is good.

This utility model relates to the field of high-voltage power supply semiconductor switch technology, specifically a high-voltage optically controlled bidirectional switch assembly. A pair of optically controlled switch valve bodies and voltage equalizing resistor circuits are symmetrically arranged on each partition between the upper and lower plates of the switch assembly. Optical fibers are connected to the optically controlled switch valve bodies, and these fibers are connected to a positive optical pulse generator and a negative optical pulse generator. This utility model uses a high-energy laser pulse beam to trigger the switch's activation, resulting in superior high- and low-voltage insulation and isolation, and eliminating electromagnetic interference. By improving the length of the optical fiber and the trigger pulse timing, the activation time of the multi-stage series semiconductor switches is controlled within 1μs, thus meeting the requirements for multi-stage series applications. Furthermore, the switch assembly adopts a bidirectional design, allowing bidirectional withstand of rated voltage. The contactless design of the switch valves ensures noiseless operation during activation, meeting partial discharge test requirements while being safer, more stable, flexible, and efficient.