609 results about "Pulsed laser" patented technology

A wide-field dynamic magnetic imaging device and method. The wide-field dynamic magnetic imaging device comprises: a probe assembly (1), comprising a diamond (101) containing NV centers; a microwave magnetic field assembly (2) configured to generate a uniform microwave field and a uniform bias magnetic field in the vicinity of the diamond (101), so as to regulate the spin energy level of the diamond (101) and the quantum state evolution process; a laser modulation assembly (3) configured to output an initial uniform pulsed laser to excite the diamond (101) to emit fluorescence; a fringe light modulation assembly (4) configured to modulate the initial uniform pulsed laser to output a fringe pulsed laser, causing the fluorescence emitted by the diamond (101) to be fringe fluorescence, or to modulate the fluorescence emitted by the diamond (101) into fringe fluorescence; a fluorescence detection assembly (5) configured to perform spatial imaging on the fringe fluorescence to obtain magnetic field information of a sample under test (7), thereby obtaining an initial magnetic image of said sample (7); and a data processing assembly (6) configured to perform Fourier transform and inverse Fourier transform on the initial magnetic image to obtain a first magnetic image.

The invention provides a pulse laser deposition process online monitoring device and method, and relates to the technical field of material preparation and process monitoring, the pulse laser deposition process online monitoring device comprises a growth cavity, a substrate supporting mechanism and a target material supporting mechanism which are arranged in the growth cavity, a pulse laser for ablating a target material, and a spectrum acquisition unit, the optical signal acquisition module is used for acquiring an optical signal radiated by plasma plume generated by ablating a target material by the pulse laser; and the spectrum analysis unit is connected with the spectrum acquisition unit and is used for receiving the light signals acquired by the spectrum acquisition unit and analyzing and processing the light signals so as to obtain the state information of the plasma plume. According to the online monitoring scheme, the extreme ultraviolet spectrum diagnosis technology and the pulse laser deposition process are deeply fused, so that the film growth process is accurately controlled, and the process is optimized.

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

The invention discloses a method for improving the oxidation resistance of nickel-based superalloy, and belongs to the technical field of metal material surface modification. Based on the high-energy transient effect of laser shock waves, the method mainly comprises the key steps of alloy surface pretreatment, laser shock peening process implementation, post-treatment and the like. Specifically, firstly, the surface of the nickel-based single crystal alloy is subjected to pretreatment such as polishing and cleaning, surface defects and pollutants are removed, and the treatment quality is guaranteed; then, according to the material characteristics and performance requirements of the nickel-based single crystal alloy, laser parameters such as laser energy, pulse width and light spot diameter are accurately set, and proper restraint layer and absorption layer materials are selected; then, high-energy pulse laser is utilized to irradiate the absorption layer, high-temperature and high-pressure plasma is induced to be generated, the plasma expands and explodes to generate strong shock waves, the shock waves act on the alloy surface, the surface material is subjected to severe plastic deformation, a residual compressive stress layer with the depth capable of reaching hundreds of micrometers is formed, meanwhile, surface grains are refined, and the microstructure is optimized; and after the strengthening treatment is completed, simple cleaning and performance detection post-treatment are carried out. Through laser shock strengthening, a special organization structure with high density and low defect density is formed on the surface of the nickel-based single crystal alloy, diffusion and invasion of oxygen atoms are effectively hindered, and the oxidation resistance of the alloy is remarkably improved. According to the method, the controllability of technological parameters is high, the strengthening effect can be accurately regulated and controlled, the treatment process is free of pollution and high in efficiency, the obtained strengthened nickel-based single crystal alloy can be widely applied to the fields such as aerospace engine hot end parts and nuclear energy equipment which have strict requirements for high-temperature oxidation resistance, the reliability of related parts is greatly improved, and the service life of the related parts is greatly prolonged.

The invention provides an optical neural network computing system and method based on time domain excitation characteristics, and the system comprises a pulse clock sequence module which is used for generating a reference time sequence; the multi-channel pulse laser array is used for generating semiconductor neuron laser pulses with subnanosecond pulse width based on a reference time sequence; the time domain and wavelength division multiplexing module is used for simultaneously performing time domain coding and wavelength division multiplexing on the laser pulse based on a reference time sequence to generate a first optical signal; the reconfigurable weight matrix module is used for performing all-optical linear matrix operation and weight mapping on the first optical signal to obtain a second optical signal; the neuron activation module is used for performing nonlinear activation processing on the second optical signal based on an LIF theory to obtain an activated optical signal; and the output module is used for carrying out decoding and photoelectric conversion on the activated optical signal to obtain a network reasoning result.

The invention provides a metal material surface treatment method based on the synergistic effect of solid solution-aging heat treatment and laser shock. The metal material surface treatment method is used for remarkably improving the mechanical property of a metal material and the uniformity and stability of a microstructure. Different from a traditional single laser shock peening process, the heat treatment method is combined with laser shock, and the double effects of structure optimization and mechanical property enhancement are achieved. Specifically, firstly, alloy elements are subjected to sufficient solid solution in a matrix through solid solution-aging heat treatment, heat preservation is conducted at the low temperature so that a strengthening phase can be promoted to be separated out again, and the strengthening phase which is evenly and stably distributed is obtained; and then laser shock is applied to the surface of the material, deep residual compressive stress is introduced into the surface layer through high-energy pulse laser, and a nanocrystalline layer structure is formed. According to the synergistic process, the microstructure stability and uniformity of the material are effectively improved, and the mechanical property of the material is remarkably improved. The technology is suitable for the fields of aerospace, automobile lightweight structures, rail transit and the like, and has wide industrial application prospects.

The invention relates to the technical field of ocean detection equipment, and particularly provides an ocean laser radar system and a seawater multi-parameter detection method. The system comprises a laser emission subsystem, an optical receiving subsystem and a signal acquisition and control subsystem. The laser emission subsystem can emit multi-wavelength pulse laser to seawater; the optical receiving subsystem adopts a double-receiving telescope structure, respectively receives scattering and fluorescence signals with different properties, and realizes multi-channel signal separation through light splitting, light filtering and polarization light splitting elements; and the signal acquisition and control subsystem realizes synchronous acquisition and processing of multi-channel data. The system can synchronously invert water optical parameters, water particulate matter depolarization ratio and color ratio, chlorophyll concentration, suspended load concentration and other multi-parameter profiles, and is suitable for marine environment unattended monitoring of a fixed platform and a mobile platform.

The invention belongs to the technical field of photoelectric detection imaging, and particularly relates to a dim target enhancement device and method based on range gating polarization imaging, the device comprises a transmitting system and a receiving system, the transmitting system comprises a pulse laser, a signal modulation circuit and a transmitting optical system; the pulse laser is used for emitting laser beams; the signal modulation circuit is used for generating a high-frequency modulation electric signal and modulating a laser beam emitted by the pulse laser; the emission optical system is used for focusing and adjusting the light beam direction and the emergent light polarization state; the receiving system comprises a receiving optical system, a focal plane polarization detector, a synchronous control board, a signal processing board, an image processing board and display control equipment; according to the device, the pulse illumination module, the time synchronization control module and the polarization imaging module are integrated, and an image definition evaluation algorithm is combined, so that synchronous acquisition and fusion of target polarization information and distance information are realized.

The embodiment of the present application discloses a kind of test system and heat dissipation method of pulse laser analog single particle effect, and it is used to improve the heat dissipation efficiency of the chip to be tested for heat dissipation.The heat dissipation system includes pulse laser and heat conduction component.The heat conduction component is located between the pulse laser and the chip to be tested.The heat conduction component includes light-transmitting region and heat-conducting region.The light-transmitting region is physically connected with the heat-conducting region.The pulse laser emitted by the pulse laser is transmitted to the chip to be tested through the light-transmitting region.The pulse laser is used to carry out pulse laser analog single particle effect test on the chip to be tested.The light-transmitting region is physically connected with the chip to be tested.The heat of the chip to be tested is dissipated through the light-transmitting region and the heat-conducting region.

The application relates to the field of laser micro-nano processing, in particular to a laser micro-nano processing device based on an acousto-optic deflector and a rotating mirror and a use method thereof, which comprises a pulse laser, a mirror group, an acousto-optic deflection module, a signal control unit, a beam splitting module, a rotating mirror and a flat-field focusing lens arranged in sequence; the acousto-optic deflection module comprises a first acousto-optic deflector and a second acousto-optic deflector, the first acousto-optic deflector and the second acousto-optic deflector are orthogonally arranged, the first acousto-optic deflector is arranged in parallel with the rotating shaft of the rotating mirror, the second acousto-optic deflector is arranged in perpendicular to the rotating shaft of the rotating mirror, through the arrangement of the two orthogonally arranged acousto-optic deflectors, the laser beam can be flexibly controlled to be deflected to any position in a rectangular scanning area, and in combination with the polygon rotating mirror, the polygon rotating mirror can be rotated only once along a processing track, the acousto-optic deflector can compensate and fill a processing pattern, and the technical effect that any shape can be realized is achieved.

The invention provides a liquid heat conductivity coefficient measurement method without absolute thickness information, and belongs to the field of liquid heat conductivity coefficient measurement. The problem that the universality and the accuracy are seriously restricted due to the fact that an unsteady state method must depend on the absolute thickness of a sample to be detected is solved. The method comprises the following steps: placing a to-be-detected liquid sample in a crucible, and adjusting an optical system to enable an infrared detector to be aligned with a to-be-detected area; changing the thickness of the liquid sample through an electric displacement table to obtain a plurality of thickness values; corresponding to each thickness, using a pulse laser to heat the sample, detecting a signal of the overheat residual temperature of the upper surface of the crucible along with time change, and obtaining a normalized temperature rise curve; repeatedly measuring under a plurality of different liquid thicknesses, and recording the half-peak time of the normalized heating curve corresponding to each thickness value; and calculating the thermal diffusion coefficient of the to-be-measured liquid according to the proportional relation between the half-peak time and the thickness square of the liquid, thereby determining the heat conductivity coefficient of the liquid. The method is used in practical industrial environments such as thermoelectricity and lithium ion batteries.

A laser processing apparatus according to one embodiment includes: a stage that holds a plurality of substrates on a concentric circle and rotates about a center of the concentric circle; and a laser irradiation device which is provided with a control unit that controls the output of the infrared pulse laser light such that a plurality of adjacent laser spots are spaced apart, and which is movable in the radial direction of the concentric circle. When the diameter of the plurality of laser spots is x and the interval between the plurality of adjacent laser spots in the rotation direction of the stage is L1, the control unit may satisfy xlt; l1 is used for controlling.

A laser device according to one embodiment includes a laser light source configured to output pulsed laser light L1 and a pulse width control unit configured to amplify the pulsed laser light output from the laser light source, change a pulse width of the pulsed laser light, and output the pulsed laser light. The pulse width control unit includes a first laser amplifier configured to amplify the pulsed laser light and a pulse waveform manipulation unit disposed between the first laser amplifier and the laser light source and configured to manipulate a pulse waveform of the pulsed laser light.

The utility model discloses a belt coal flow coal quality detection device, and relates to the technical field of coal quality detection, the belt coal flow coal quality detection device comprises two support plates, the inner sides of the two support plates are provided with sliding chutes, the interiors of the sliding chutes are slidably connected with a sliding frame through sliding blocks, the front of the sliding frame is fixedly connected with two circular plates, and the circular plates are fixedly connected with the two circular plates. A first driving motor is arranged on the left side of a circular plate on the left side, a second driving motor is arranged on the right side of a circular plate on the right side, a circular sleeve and a second containing box can collect and sample coal above a conveying belt, and then the collected coal can be pulverized through a pulverizing rod in a pulverizing cylinder; according to the coal quality detection device, coal quality can be accurately sampled, the work of operators is relieved, the pulse laser and the spectrograph are matched for work, the spectrograph and the pulse laser are used for coal quality analysis, the components and characteristics of the coal quality can be accurately detected, the working efficiency and accuracy are improved, and the practicability is improved.

A particulate matter detection device takes holographic images of flowing particulate matter concentrated by a virtual impactor, which selectively slows down and guides larger particles to fly through an imaging window. The flowing particles are illuminated by a pulsed laser diode, casting their inline holograms on a CMOS image sensor in a lens-free mobile imaging device. The illumination contains three short pulses with a negligible shift of the flowing particle within one pulse and triplicate holograms of the same particle are recorded at a single frame revealing different perspectives of each particle. A deep neural network classifies the particles based on the acquired holographic images. The device was tested using different types of pollen and achieved a blind classification accuracy of 92.91%. This mobile and cost-effective device weighs ˜700 g and can be used for label-free sensing and quantification of various bio-aerosols over extended periods.

Heat-resistant laser-scribed grain-oriented silicon steel and an efficient scribing method therefor. The surface of the grain-oriented silicon steel has a plurality of parallel linear grooves (2), a roughness mean value Ra of a central line at the bottom of each groove (2) is less than or equal to 0.92 μm, and the ratio Rz / d of the maximum height Rz of the central line at the bottom of the groove (2) to the depth d of the groove (2) is less than or equal to 0.45. The scribing method comprises: using a pulsed laser to scan the surface of a grain-oriented silicon steel plate (1) so as to form a plurality of parallel linear grooves (2), wherein a repetition frequency of the pulsed laser falls within 10-400 MHz, and a spot overlap rate during laser scanning is greater than or equal to 96.4%.

The present invention presents improved systems and methods for performing multi-photon lithography. A line-scanning temporally focused two-photon lithography (LS-TFTPL) technique is capable of patterning three-dimensional structures with high throughput. An example LS-TFTPL system may include a pulsed laser, first optical components for expanding light pulses into an elongated or line cross section, a digital micromirror device for modulating the light pulses with a linear pattern and dispersing spectral components of the modulated light pulses, and second optical components for focusing the dispersed spectral components of the modulated light pulse at a line in or on a target material. The focused spectral components may alter the target material within selected voxels along the line, where the selected voxels spatially correspond to the linear pattern.

The application discloses a photoacoustic spectrum signal detection system and a detection method. The system comprises a signal acquisition device and a detection signal processing terminal. The signal acquisition device comprises an ultraviolet pulse laser, a first plano-convex lens, a second plano-convex lens, a focusing objective lens, a refractive prism, a helium-neon laser, an electric displacement platform, a polarization modulation assembly, a light splitting assembly and a differential detector. The photoacoustic spectrum signal detection system uses the specific absorption of cell nuclei to ultraviolet light, obtains a differential detection signal through the differential detector and generates an analysis spectrum. The light sensing assembly collects a light sensing signal of the sample and generates a microscopic image. The detection system can realize photoacoustic spectrum analysis of a cell nucleus level micro-sized absorber, thereby obtaining a high-resolution analysis spectrum and a microscopic image reflecting the physical properties inside the cell nuclei. The label-free and non-staining photoacoustic spectrum signal detection does not need staining and can save detection time, and the accuracy of cell detection on biological samples is improved.

The invention provides a vehicle with a welded bus bar connector. In a high voltage vehicle electronic system, an electronic component having a tab is welded to a bus bar using pulsed laser welding. Each tab is welded to the bus bar by an array of welds. Each spot welding portion includes an inner region formed in a pinhole mode by laser welding and an outer region formed in a conduction mode by laser welding. The density of energy applied to the inner region is between ten and twenty times higher than the density of energy applied to the outer region.

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.

This invention discloses an all-weather reconnaissance and alarm device, comprising a laser illumination component, an ICCD / ICMOS gating component, and an integrated processor. The laser illumination component uses high peak power pulsed laser light for illumination assistance, enhancing target brightness. The ICCD / ICMOS gating component is used to achieve high-gain photoelectric conversion of weak optical signals. Specifically, the ICCD / ICMOS gating component eliminates or reduces the influence of sunlight through "ultrafast adaptive imaging + light decay," enabling the component to operate in the linear region with the optimal signal-to-noise ratio for the target. Simultaneously, the ICCD / ICMOS gating component integrates a high-speed CCD / CMOS image sensor. Without changing the delay time, a higher image intensifier repetition frequency results in a smaller increase in delay time. Through ultra-high-speed image acquisition, it fully utilizes the energy of each laser pulse, enabling imaging of targets at different distances and high-speed moving targets. The integrated processing component focuses on controlling the ultrafast adaptive adjustment duration, the interval between auxiliary illumination and gating opening, and high-precision gain control.

Array single photon detection and two-dimensional camera common path fusion device and pixel matching method belong to the field of optical precision measurement. The array single photon detection and two-dimensional camera common path fusion device comprises a signal generator, a laser, an emitting optical system, a receiving optical system, a dichroic mirror, a two-dimensional camera, an array single photon detector, an array single photon counter and a data acquisition and processing fusion module. The method of the present application is as follows: the array single photon detection waveband pulsed laser and the two-dimensional camera sensing waveband ambient light returned by the target object are separated by using a common receiving optical path and a dichroic mirror to determine the pixel size and the number of the array single photon detector and the two-dimensional camera; the transmission light offset d is calculated according to the thickness of the dichroic mirror; the transmission light offset d is used as a correction factor to realize the pixel matching of the array single photon detection three-dimensional imaging and the two-dimensional camera image; the array single photon detection three-dimensional image and the two-dimensional camera image are superimposed, and the high resolution of the two-dimensional image is used to enrich the three-dimensional point cloud imaging information.

The metal wire laser derusting system comprises a pulse laser, a beam expanding and collimating assembly is arranged on a light path of the pulse laser, a spectroscope is arranged on an emergent light path of the beam expanding and collimating assembly, and a group of laser focusing sub-modules I distributed on the left side and the right side of the circumferential direction of a metal wire are arranged on a transmission light path of the spectroscope; a reflection assembly is arranged on a reflection light path of the spectroscope, and a set of laser focusing sub-modules II distributed on the upper side and the lower side of the metal wire in the circumferential direction are arranged on an emergent light path of the reflection assembly. According to the invention, by arranging the laser splitting sub-module and the two groups of bidirectional focusing sub-modules, the collimated laser beam is divided into two paths, and the synchronous laser irradiation of the full circumferential surface of the wire rod is realized at one time under the synergistic effect of the lens group and the reflecting mirror under the condition that the wire rod is not rotated.

This invention belongs to the field of laser surface engineering and metal matrix composite technology, and provides a Ti / Nb microalloyed Inconel 625 toughening coating, its composite powder, and preparation method. The composite powder is composed of gas-atomized Inconel 625 alloy powder, titanium powder, and niobium powder, with a Ti to Nb mass ratio of (0.8–1.2):1 and a total addition amount of 0.8–1.5 wt%. A dual-laser cladding process is employed. An initial coating is first formed by laser cladding in an inert atmosphere, followed by in-situ pulsed laser shock blasting when cooled to 900–1000℃. After slow cooling, a toughened coating is obtained. The resulting coating contains 10–20 nm dispersed Ni3(Nb,Ti) composite γ-rays. , The coating contains no Ni2(Nb,Si) Laves phase. It exhibits both high strength and high toughness, along with excellent high-temperature stability.

This invention discloses a method and system for detecting micro-UAVs based on target reflectivity, solving the problem of low-reflectivity targets being difficult to detect in complex environments in existing technologies. It achieves the identification of micro-UAVs by combining active laser detection with target reflectivity feature analysis. The method includes: emitting pulsed laser light towards the target area; synchronously acquiring target signals through dual detectors with a common optical path design to obtain target geometric features and reflectivity intensity signals; calculating the original reflectivity based on the reflectivity intensity signals and obtaining target distance information; correcting the original reflectivity based on the target distance information to obtain a corrected reflectivity value; generating target motion features through multi-frame temporal analysis; and fusing the corrected reflectivity value, target geometric features, and target motion features based on a fusion strategy to construct a comprehensive target feature vector; inputting the comprehensive target feature vector into a classifier to output the identification result of the micro-UAV.

A pulse width extension system, a laser apparatus, and a method of manufacturing an electronic device are provided. A pulse width expansion system according to one aspect of the present disclosure expands the pulse width of an incident pulse laser beam and emits the pulse laser beam, the pulse width expansion system comprising: a pulse width expansion optical system configured to include a beam splitter and a plurality of mirrors; a housing that houses the pulse width expansion optical system; at least one target configured so as to be able to discriminate a portion irradiated with the pulsed laser light; and a target movement mechanism capable of disposing the at least one target on an optical path of the pulse laser light including the pulse width expansion optical system and retracting the at least one target from the optical path.

This invention relates to lidar, specifically to a high-precision self-mixing pulse modulation semiconductor lidar, comprising: a driving circuit that drives a semiconductor laser to emit pulsed laser light; an optical amplification unit that amplifies the power of the pulsed laser light and transmits it to an optical coupling unit; an optical coupling unit that collimates or focuses the amplified pulsed laser light onto the target and backcouples the reflected or scattered light from the target to the resonant cavity of the semiconductor laser, where it undergoes self-mixing interference with the intrinsic laser light within the cavity to form a self-mixing lidar signal; and a signal processing unit that conditions and processes the self-mixing lidar signal, outputting the velocity and range information of the target. The technical solution provided by this invention effectively overcomes the shortcomings of existing technologies, such as poor low-speed detection capability, high external frequency shifting loss and cost, and poor overall adaptability.

The invention discloses a preparation method of a silicon carbide coating with high bonding strength, and belongs to the technical field of material surface treatment. The method comprises the following steps: pretreating a matrix; depositing a silicon powder and carbon powder mixed precursor layer on the surface of the substrate by adopting ultrasonic cold spraying; performing rapid cladding on the precursor layer by using pulse laser under a protective atmosphere so as to form a silicon carbide transition layer on an interface through induction; and finally, carrying out high-temperature annealing treatment to densify the coating. Through the synergistic effect of pulse laser and high-temperature annealing, the metallurgical bonding silicon carbide coating is formed on the surface of the graphite matrix, and firm chemical bonding between the coating and the matrix is achieved; meanwhile, based on a combined process of ultrasonic cold spraying, rapid laser cladding and short-time annealing, the preparation period is greatly shortened; and the method can also adapt to matrixes with complex morphologies. Therefore, the problems that in the prior art, a coating is insufficient in bonding strength and low in efficiency are effectively solved.

This application proposes a bolt preload measurement system and method based on laser-electromagnetic ultrasound, relating to the field of bolt nondestructive testing. The measurement system includes a laser source, an ultrasonic probe, a signal conditioning module, a temperature module, a loading module, and a data processing module. The laser source generates pulsed laser light. The ultrasonic probe includes a long-axis housing and an electromagnetic ultrasonic transducer unit. The housing contains an incident light path and an outgoing light path. The electromagnetic ultrasonic transducer unit is located inside the housing near the end of the outgoing light path. The signal conditioning module preprocesses the ultrasonic waves received by the electromagnetic ultrasonic transducer unit. The temperature module acquires the bolt temperature in real time. The loading module applies an axial tensile load to the bolt when it is at thermal equilibrium temperature. The data processing module calculates the bolt preload based on the flight time of the preprocessed ultrasonic waves and the tensile load. This application enables non-contact, high-precision measurement of the preload of small-diameter bolts under extreme conditions.

The application provides a preparation method of a laser-induced graphene composite film based on a biomimetic multi-level structure, the composite film and application. It relates to the fields of material surface engineering and deicing technology, and the preparation method comprises the following steps: cleaning and drying pretreatment of a polyimide film substrate; through selective scanning by a pulsed laser, a laser-induced graphene layer is generated in situ on the substrate surface synchronously, and a biomimetic multi-level structure containing a periodic microporous array and a three-dimensional porous graphene network is constructed; the product is immersed in a nano-hydrophobic solution for modification and solidification to form a three-level hydrophobic coating; annealing treatment is performed under inert gas protection to eliminate internal stress, and the composite film is obtained after cooling. The film has super-hydrophobicity, low ice adhesion strength and high efficient light-heat conversion capacity. The application aims to solve the safety and efficiency problems in the fields of aviation, wind power, photovoltaic and the like due to the lack of long-acting, stable, low-energy and function-integrated deicing materials.