174 results about "Dual beam" patented technology

The invention discloses a low-profile dual-circularly polarized wave beam scanning folding reflection array antenna. The low-profile dual-circularly polarized wave beam scanning folding reflective array antenna comprises a lower reflective array antenna and an upper circularly polarized selection metasurface. A circular polarization plane feed source is integrated in the middle of the reflective array antenna, and beam deflection is achieved. The circular polarization selection metasurface introduces opposite phase gradients to a left-hand circular polarization wave beam and a right-hand circular polarization wave beam through spin decoupling, and then introduces opposite wave beam deflection angles. Meanwhile, due to the polarization selection function of the circular polarization selection metasurface, the profile height of the antenna is half of the focal length of a traditional reflective array. By rotating the lower-layer reflective array antenna and the upper-layer circular polarization selection metasurface, the antenna can realize simultaneous + / -42-degree pitch angle scanning and 360-degree azimuth angle scanning of left-hand circular polarization and right-hand circular polarization dual beams, and the aperture efficiency, the axial ratio, the scanning loss and other performances are good. The low-profile dual-circularly-polarized wave beam scanning folding reflection array antenna provided by the invention can realize simultaneous scanning of two circularly-polarized wave beams, and is low in profile, compact in structure, low in cost and novel in function.

The invention relates to the technical field of semiconductor detection, in particular to a method and a system for measuring the thickness of a semiconductor epitaxial layer based on multi-beam interference correction. Acquiring infrared reflection spectrum data of the wafer under different incident angles, and performing double-stage smoothing preprocessing on the data by using a moving least square fitting algorithm; an interference extreme point is accurately identified by adopting a self-adaptive extreme value feature extraction strategy; the method comprises the following steps of: calculating the dynamic refractive index and the initial thickness estimation value of the epitaxial layer, constructing a multi-beam interference intensity distribution model, and finally providing a hybrid nonlinear optimization algorithm to invert the accurate thickness d of the epitaxial layer, thereby overcoming the measurement error caused by neglecting the multi-beam effect and the refractive index change in the traditional double-beam interference, and improving the accuracy of the multi-beam interference. And the precision and the reliability of epitaxial layer thickness measurement are remarkably improved through the combination of data preprocessing and a nonlinear optimization algorithm. The objective of the invention is to solve the problem of how to correct measurement errors caused by multi-beam effect and refractive index change.

The invention provides a silicon carbide epitaxial layer thickness infrared light measurement method and system, a medium and equipment, and relates to the technical field of thickness measurement. Based on a double-beam interference model, considering air-epitaxial layer and epitaxial layer-substrate interface reflection, deducing an optical path difference and a total phase difference, and constructing a general thickness solving model according to a refractive index relationship between an epitaxial layer and a substrate; dividing spectral intervals by adopting a sliding window, calculating the thickness of each interval by utilizing different dispersion models, and distributing weights according to relative standard deviation for weighted fusion to obtain a comprehensive thickness solving model; expanding to a multi-beam interference model, deducing a total reflectivity formula, and analyzing necessary conditions and thickness errors of multi-beam interference; and acquiring a silicon carbide epitaxial wafer to be measured, and building a fitting model by combining an Airy formula and the dispersion model to eliminate errors so as to obtain a thickness measurement result. High-precision and high-reliability non-destructive measurement of the thickness of the silicon carbide epitaxial layer is achieved, and the problems of systematic errors and insufficient result reliability caused by a traditional simplified model are solved.

An aberration regulation method of a reflective double-beam interference exposure system, comprising: constructing a reflective double-beam interference exposure system, dividing a light beam output by a laser into two double beams with the same intensity, and forming an interference exposure field; constructing an aberration regulation system, testing and recording the aberration of the double-beam light path by using a spherical interferometer, and regulating the wavefront of any light beam in the double beam by using a deformable mirror, so that the aberration of the light beam matches the aberration of the other light beam, and the regulation of the aberration of the interference exposure field is completed. The present application solves the problems of precise assembly and adjustment, wavefront aberration control and the like of the reflective double-beam interference exposure system based on a large-aperture off-axis parabolic mirror, and provides a new solution for the preparation of a meter-level large-aperture, low-aberration diffraction grating.

According to the grid line perpendicularity adjusting method and device for the holographic diffraction grating double-beam exposure system, on the basis of the double-beam exposure system, a high-side sag substrate, a cube-corner prism, a rectangular prism, a horizontal adjusting table and a CCD are additionally arranged; a reflection reference surface is established through a cube-corner prism and a right-angle prism, and a to-be-exposed substrate with a high-precision positioning notch is combined, so that high-precision correction of an exposure light path is realized. The method effectively solves the problem that the perpendicularity of the grid line relative to the bottom reference surface of the substrate in double-beam holographic interference photoetching is insufficient, ensures that the prepared grating grid line has high perpendicularity precision, and remarkably improves the diffraction performance of the grating.

The application discloses a kind of superfast laser processing system and method that can steplessly regulate the inclination of micro slot side wall, including laser, laser exit beam is divided into two beams after beam splitter, wherein beam 1 is parallel to Y axis, beam 2 is parallel to X axis;Beam is reflected after first mirror and exits parallel to Y axis;Two beams are vertically incident into double-beam adjustable tilt moving device, and after regulating light beam, respectively through second mirror, third mirror and through first convex lens, second convex lens, it converges in a certain angle and a certain interval on the surface of workpiece to be processed, and the workpiece to be processed is clamped on three-dimensional motion platform, and the focal point of two intersecting converging beams is relatively moved with workpiece to be processed, to realize the laser etching processing of surface micro slot;The application can regulate the inclination of two sides respectively to realize the efficient controllable processing of rectangular micro channel, other side wall inclination micro channel and even negative inclination micro channel.

The invention discloses a photobleached all-polymer optical waveguide grating sensor and a preparation method thereof, and belongs to the technical field of polymer optical waveguide grating sensors. The preparation method comprises the following steps: carrying out hot stamping on a substrate sheet to obtain a substrate sheet with a groove; spin-coating photoresist on the substrate sheet to form a photoresist core layer; photoetching the photoresist core layer through double-beam interference to obtain the photoresist core layer with interference fringes; spin-coating a thermosensitive polymer cladding material on the photoresist core layer, covering the flexible substrate and then carrying out low-temperature thermocuring so as to bond the photoresist core layer and the flexible substrate; stripping the substrate sheet, exposing the photoresist core layer, covering the protective cladding, and curing to obtain a multi-layer composite device; and performing non-uniform post-baking on the multi-layer composite device to obtain the multi-layer composite device. According to the invention, the grating period can be changed under the condition that the grating mask is not replaced, and the cost of spectrum adjustment is greatly reduced.

The invention relates to the technical field of in-situ detection of electron microscopes, in particular to a one-stop four-dimensional transmission scanning focused ion beam double-beam electron microscope, which comprises a vacuum cavity provided with a vacuum cavity cover; a sample table is arranged on the inner side of the vacuum cavity cover; the electron beam, the ion beam, the manipulator, the sample holder and the gas injection system are mounted on the vacuum cavity through the multifunctional in-situ sealing flange; the system further comprises a 4D STEM detector. According to the invention, electron beam observation, ion beam processing, four-dimensional scanning transmission electron microscope imaging information acquisition and in-situ electric, optical, thermal, force and other external field loading functions are integrated, and scanning electron microscope imaging, transmission electron microscope sample preparation and in-situ 4D STEM diffraction information acquisition under multi-field combined application can be carried out on a sample in one device. One-stop full-scale multi-field combined application detection is realized, the test result is prevented from being influenced by contact with air, water and other external environments in the sample transfer process, and meanwhile, the test efficiency is remarkably improved.

The invention discloses a double-beam scanning photoelectric sensor and a control method, and aims to solve the problem of false triggering when an existing sensor detects an object with a gap or high light reflection. The sensor is mainly composed of a light beam transmitting module, a light beam receiving module, a control processing module and an output module. Wherein the light beam emitting module is composed of two independent infrared lasers and can synchronously emit parallel light beams with the diameter of 1.0-2.0 mm; a state machine logic unit is arranged in the control processing module, output is triggered only when two paths of signals exceed a set threshold value by comparing the intensity of the double-beam signals in real time, and the current output state is maintained when any path of signal is lost; the output module provides an uninterrupted NPN / PNP switching signal. Through double-beam cooperative scanning and special control logic, stable detection can be provided for regular gap objects such as printed circuit boards and trays, transparent or highly reflective materials can be effectively handled, and the false triggering rate is remarkably reduced while the detection reliability is improved.

The invention discloses a transmission-type anti-vibration controllable path atmospheric turbulence measuring device, which comprises a laser emission and beam splitting module, and a subsequent light path module, a photoelectric detector and a data acquisition and processing module which are sequentially arranged along the light path direction of the laser emission and beam splitting module, the data acquisition and processing module comprises an AD converter, a data acquisition card and a computer which are connected in sequence, the AD converter is located on one side close to a photoelectric detector, and the photoelectric detector is an enhanced CCD camera or an electron multiplication CCD camera; the method does not need to depend on laser beacons and backward scattering, an active transmission-type differential light path with transmitting end homologous parallel double beams and a receiving end cooperatively regulated and controlled is constructed, common-mode noise such as telescope tracking errors and platform jittering is actively counteracted from the hardware level, double-beam transmission light is directly received, the signal-to-noise ratio is high, and by combining narrow-band filtering and polarization suppression, the detection precision is high. Environmental stray light can be effectively stripped, and light spot centroid positioning and light intensity fluctuation calculation are more accurate.

The invention discloses an up-conversion microscopic imaging rapid spot scanning method and device based on light-operated fluorescence erasure, and the device comprises an excitation light module, a loss light module, a double-beam coupling module, a laser spot scanning module, and a fluorescence detection imaging module. When the probe is lighted by the exciting light and the scanning passes, the following loss light acts on the probe which is emitting the fluorescence, and the fluorescence loss is quickly induced, so that the residual fluorescence is extinguished (the fluorescence lifetime is shortened) and the imaging brightness is not weakened. According to the method, the trailing phenomenon caused by overlong fluorescence lifetime in the up-conversion point scanning fluorescence microscope is solved, the limitation of the fluorescence lifetime on the point scanning imaging speed is broken through, and up-conversion rapid point scanning microscopic imaging without brightness loss and trailing can be realized.

The application discloses a reflection type volume grating uniformity improving device and method, which adopts a double-system cooperative structure of axial exposure dose compensation and double-beam interference exposure. The axial exposure dose compensation system compensates the non-uniform axial exposure dose distribution caused by energy attenuation through laser irradiation of a photosensitive wave band of a recording medium and multi-axis rotation of the recording medium. The double-beam interference exposure system generates two collimated coherent lights with adjustable polarization states and powers by using laser of a high-transmittance wave band of the recording medium and a polarized beam splitter, and accurately controls the interference angle by adjusting the mirror posture, so that the high-contrast grating structure is written in the recording medium subjected to the axial exposure dose compensation. The application can effectively solve the non-uniform exposure dose distribution problem caused by laser energy attenuation in the traditional preparation process, thereby guaranteeing the consistency of the axial performance of the volume grating, and effectively promoting the development of the fields of high-performance laser beam combination, pulse compression and optical communication filter which need high-uniformity volume grating.

The utility model relates to the field of laser welding, in particular to a precise positioning double-beam laser welding auxiliary platform. Comprising a rack, a placing table, a driving assembly, a welding head, a first electric sliding rail, a partition plate, a fixing base, a first sliding rod, a first elastic piece, a limiting plate and the like. A placing table and a driving assembly are arranged on the upper side of the rack, two welding heads are installed on the driving assembly, first electric sliding rails are arranged on the front side and the rear side of the placing table correspondingly, sliding blocks of the two first electric sliding rails are connected with the front end and the rear end of the partition plate correspondingly, two fixing bases are arranged on the left portion and the right portion of the upper side of the rack correspondingly, and first sliding rods are arranged on the fixing bases in a sliding mode. Through the design of the partition plate, the limiting plate, the first elastic piece and other components, it is guaranteed that a welding piece does not displace in the horizontal direction, deviation caused by vibration or thermal deformation in the welding process is avoided, and welding precision is improved.

The invention discloses a laser double-beam interference micropore machining phase modulation method which comprises the following steps: respectively emitting two Gaussian beams, and respectively modulating and compounding phases to obtain vortex Bessel beams; respectively adjusting the pulse sequences of the two Gaussian beams into a pre-pulse and a main pulse which are connected into a whole and have different energy; respectively carrying out polarization treatment on the two Gaussian beams to obtain two energy brushes which reversely rotate around the outer surface of the circumference of the vortex Bessel beam to clean chips; s2, monitoring the difference between the micropore depth and the target hole depth in real time, and continuously adding additional phase offset to the composite phase in S1; the long focal depth characteristic of the Bessel beam and the annular energy distribution of the vortex beam are combined, the focal depth range is expanded, meanwhile, laser energy is dispersed to the circumferential area from the center point, the peak power density is reduced, the heat dissipation condition is improved, the problem of insufficient focal depth is effectively solved, and feature offset caused by heat accumulation is synchronously restrained.

The invention provides a continuous and pulse coaxial double-beam welding method for a sheet titanium alloy corner joint process, and belongs to the technical field of laser welding. According to the method, continuous laser and pulse laser are adopted, coincidence arrangement of the two laser beams in space is achieved through a coaxial composite optical system to form a composite laser beam, the composite laser beam acts on a sheet titanium alloy corner joint assembled and fixed through a corner joint clamp, and the welding process is completed. The two laser beams are similar in wavelength, optical compatibility is good, and an optical system is stable. The coaxial composite heat source has the characteristics that the energy distribution gradient can be regulated and controlled, and the heat input is accurately controlled, so that the welding heat input can be effectively reduced while the mechanical property of the joint is ensured, and the residual stress is reduced to control the welding deformation. The sheet titanium alloy corner joint obtained through the method has the advantages of being uniform in welding seam forming, little in splashing, small in deformation and the like, and the technological requirements of the aerospace field for high-quality thin-wall titanium alloy structural parts are met.

The invention discloses a double-beam composite laser welding device. The double-beam composite laser welding device comprises a hardware body and a double-beam composite control system. The hardware body is composed of a supporting assembly, a bearing assembly, a three-axis moving mechanism, an angle adjusting mechanism and a double-compound welding head, and three-dimensional position adjustment and double-beam relative angle and posture adjustment and control can be achieved. The control system comprises a data acquisition module, a data analysis module and a control execution module, light beam parameters, postures, workpiece states and environment data are acquired through multiple sensors, optimal control parameters are generated through preprocessing, feature extraction and fusion algorithms, and all mechanisms are driven to act accurately. The device solves the problems that an existing device is low in angle adjustment efficiency, poor in double-beam collaboration and the like, angle adjustment precision, beam collaborative optimization and control intelligence are achieved, the welding quality and efficiency are effectively improved, and the device is suitable for the high-precision welding requirement of the high-end manufacturing industry.

The application relates to a quantitative detection method and quantitative detection equipment of orthogonality; the quantitative detection method of orthogonality in the application can realize the calibration of the orthogonality index by making the detection light path parallel to the pumping light path after being folded by 90 degrees through a five-prism, and enabling two originally spatially orthogonal light beams to be observed and measured on the same collection assembly, thereby providing a standardized quantitative basis for the accurate implementation, quantitative evaluation and long-term maintenance of the high-precision spatial orthogonality of the pumping light path and the detection light path of the double-beam magnetometer.

The invention is suitable for the technical field of laser measurement, and provides a detection device for corrugated paper and a corrugated paper machine. The detection device for the corrugated paper comprises a device main body, wherein the device main body comprises a storage platform and auxiliary brackets which are oppositely arranged; the laser emission module is arranged on the auxiliary bracket; the laser emission module is used for emitting continuous laser beams to the surface of corrugated paper, and the laser emission module adopts a double-beam synchronous emission structure; the laser receiving module is matched with the laser transmitting module, and the laser receiving module is mounted on the storage and loading platform; the laser receiver is used for receiving the laser signal transmitted or reflected by the corrugated paper and converting the laser signal into an electric signal; and the data processing module is used for receiving the electric signal output by the laser receiving module, and calculating to obtain a real-time thickness value of the corrugated paper according to the transmitting parameters of the laser transmitting module, the signal parameters received by the laser receiving module, the propagation characteristics of the laser in the corrugated paper and a preset multi-beam fusion algorithm.

The present disclosure provides an integrating-sphere-assisted resonance synchronous (ISARS) spectroscopy method performed with an ISARS spectrophotometer, for example, a spectrofluorometer equipped with an integrating-sphere accessory. The methods and systems of the present disclosure utilize the ISARS spectrophotometer equipped with an integrating sphere to determine the ISARS spectral intensity, quantify the ISARS-based absorbance, and subsequently evaluate the sample's double-beam UV-vis absorbance spectrum (also known as the absorption extinction spectrum). This ISARS method enables quantitative separation of light absorption and scattering contribution to the sample UV-vis extinction spectrum measured with double-beam UV-vis spectrophotometer.

This invention discloses a design method and structure for a half-mode dielectric ridge parallel plate waveguide dual-beam wide-angle scanning leaky antenna based on PCB technology. Manufactured using a fully printed circuit board process, it includes a core structure of a half-mode dielectric ridge parallel plate waveguide transmission line formed by laminating three dielectric substrates, a metallized via array disposed at the edge of the waveguide's non-radiating open aperture to suppress energy leakage, and a periodic dipole array symmetrically arranged on the radiating open aperture side of the waveguide. This invention solves the technical problems of high manufacturing cost, narrow scanning range, and difficulty in implementing dual beams in traditional leaky antennas, providing a low-cost, high-performance, and easily integrated antenna solution.

The invention discloses a rotary multi-beam additive manufacturing device based on short-wavelength composite laser, and belongs to the field of laser additive manufacturing. The device comprises a blue light system, a green light system, a red light system, a rotating wheel disc system, a macroscopic morphology real-time monitoring system, a powder feeding device and a master control system. The blue light system generates a central Gaussian light spot, and the green light system is driven by a rotating wheel disc to rotate around a blue light optical axis to form an annular light spot, so that double-beam combined processing is realized; the red light system has the in-situ heat treatment function and the CCD monitoring function, and can regulate and control organization in real time and collect processing information. A material database is arranged in the master control system, and multi-laser parameters can be intelligently regulated and controlled according to workpiece materials. The method effectively solves the problem that high-reflection metal such as copper and aluminum is low in traditional infrared laser absorptivity, has the advantages of being controllable in energy distribution, good in machining stability, high in intelligent degree and the like, and is particularly suitable for high-performance additive manufacturing of the high-reflection metal.

This invention proposes a method for fabricating three-dimensional photonic crystals based on the standing wave effect, comprising: ultrasonically cleaning a silicon substrate; spin-coating photoresist onto the cleaned silicon substrate surface, followed by a pre-baking process to form a resist layer on the silicon substrate surface; performing a first exposure on the resist layer using a dual-beam laser interferometry system to form horizontal interference fringes within the resist layer, while the incident light interferes with the reflected light from the silicon substrate to generate a vertical standing wave effect; keeping the silicon substrate unchanged, rotating the sample around a vertical axis, and performing a second exposure using the same parameters to form a second set of interference fringes in the horizontal direction, which superimposes with the first exposure to form a two-dimensional periodic light intensity distribution, while the vertical standing wave effect superimposes to enhance the intensity modulation depth.

This invention provides a dual-beam antenna, belonging to the field of antenna technology, to solve the technical problem of mutual interference between beams. The dual-beam antenna includes at least one antenna module, which includes a first polarization port, a second polarization port, multiple radiating elements arranged in an array, and multiple connecting lines. The array has at least two columns of radiating elements along a first direction and at least one row of radiating elements along a second direction. Each radiating element is connected to the first polarization port and the second polarization port via connecting lines, and the phase difference between any two adjacent radiating elements is 180 degrees along at least one of the first and second directions. When at least one of the first and second polarization ports receives a signal input, a dual beam is formed relative to the direction of the phase difference. A dual beam can be formed using at least one polarization port, and the beams in the dual beam are independent of each other, without crossing, thus avoiding mutual interference.

The invention discloses a double-beam synchronous following anti-reflection device for laser forging printing, which is characterized in that the specific wavelength combination of 1064nm powder bed cladding laser and 532nm green ultrafast strengthening laser is adopted to impact a fusion layer, and a special reflecting coating with the wavelength of 532nm is coated on a scanning galvanometer mechanism; therefore, the coating can selectively transmit laser of 1064nm and efficiently reflect laser of 532nm at the same time by utilizing the obvious wavelength difference between the two; on the basis, diffuse reflection of green ultrafast laser can be selectively isolated, so that damage to the laser caused by return light is fundamentally avoided, stable work of equipment in a long-time and high-power following mode is ensured, and therefore, the device is very suitable for large-scale application and popularization in the technical field of laser forging printing.

This invention discloses a cross-axis synchronous in-situ magnetic compensation method for a dual-beam SERF atomic magnetometer, belonging to the field of magnetic compensation technology. Based on the steady-state solution of the Bloch equation, a mathematical correlation is established between the light intensity signal and the triaxial magnetic field. First, the optimization target is determined according to the remanent magnetization direction of the sensitive axis. A three-part nested method is used to iteratively compensate the pump axis remanent magnetization, compensating the pump axis magnetic field to within the error range. Then, in the two-dimensional search space formed by the detection axis and the sensitive axis, the optimal compensation values ​​for the detection axis and the sensitive axis are simultaneously optimized through independent iteration and information interaction using a dual particle swarm optimization algorithm. Finally, the triaxial compensation current value is output to drive the compensation coil to generate a compensation magnetic field, completing rapid and high-precision automatic compensation of the triaxial remanent magnetization. This invention features a simple compensation process, fast convergence speed, and high compensation accuracy, adapting to the application requirements of miniaturized and integrated dual-beam SERF atomic magnetometers, and has significant application value in weak magnetic field detection fields such as biomagnetic imaging.

The present application relates to the technical field of metal selective additive manufacturing, and discloses a multi-laser galvanometer module, a multi-laser selective melting device and a visual guidance correction method of a multi-laser galvanometer, which comprises a multi-beam laser galvanometer, a field lens, an electrically adjusted ring and a light path protection lens; the light path protection lens comprises a protection vertical lens and a protection horizontal lens; the multi-beam laser galvanometer is a double-beam or multi-beam module structure, the multi-beam laser galvanometer comprises an X-axis mirror and a Y-axis mirror, the X-axis mirror and the Y-axis mirror are arranged in a mirror image or a straight line array form, and the X-axis mirror and the Y-axis mirror have at least two groups; two independent motors are respectively drivenly connected with the corresponding groups of X-axis mirrors and Y-axis mirrors, and the present application can meet the processing requirements of small multi-laser in a range, improve the space utilization of the processing range and the accuracy of the overall forming of the device.

The present application relates to the technical field of metal material welding, and particularly relates to a double-beam laser welding method, which comprises the following steps: double-beam laser welding is carried out by using double laser heads; the upper laser head is inclined to the welding direction, and the inclination angle between the upper laser head and the vertical line of the surface of the welding plate is 3-6 degrees, and the laser defocusing amount is -2mm to -5mm; the lower laser head is inclined to the welding direction by 3-6 degrees, and the inclination angle of the lower laser head is greater than that of the upper laser head, and the laser defocusing amount is -2mm to +2mm; the distance between the focal points of the upper and lower laser heads in the horizontal direction is kept between 0.5mm and 1.0mm; the laser welding power is adjusted to carry out welding, the welding penetration of the upper laser head reaches 0.7t or above, and the welding penetration of the lower laser head reaches 0.3t-0.6t, and t is the plate thickness; the present application solves the problems of high reflection and porosity in the laser welding of aluminum or aluminum alloy, and effectively controls the molten pool solidification and laser high reflection in the welding process through the upper and lower double-beam welding.

A laser-induced Raman and fluorescence spectroscopic test system includes a laser module, a harmonic beamsplitter, a frequency-doubling crystal, a first cavity mirror, a sample cell, a second cavity mirror, and a spectroscopic detection unit. A laser beam output by the laser module sequentially passes through the harmonic beamsplitter, the frequency-doubling crystal, and the first cavity mirror. Two sides of the harmonic beamsplitter are plated with a highly transmissive film and a highly reflective film, and the harmonic beamsplitter reflects a laser beam of a required wavelength to the sample cell. The second cavity mirror is configured for returning a laser beam from the sample cell. The harmonic beamsplitter, the first cavity mirror, the second focusing lens, and the second cavity mirror form a dual-beam waist laser resonator cavity. The first cavity mirror and the second cavity mirror are spherical mirrors and are plated with different highly reflective films.

Provided in the present invention is an all-optical nonlinear activator based on dual-light-beam cavity field modulation, which can be applied to the technical field of optical computing. The activator comprises: an input end, an optical microcavity and an output end, wherein the input end is used for providing an input light beam; the optical microcavity is used for generating resonance, so as to excite and enhance an optical nonlinear effect; and the output end is used for outputting a nonlinearly modulated optical signal. Nonlinear modulation is performed on an optical field in the optical microcavity or on a transmission spectrum of the optical field in the optical microcavity by means of two coherent light beams having a phase difference, thereby forming nonlinear mapping between the light intensity of input light and the light intensity of output light, i.e., an all‑optical self-modulation process. An effective nonlinear operator is provided for all-optical computing, thereby accelerating the convergence of network training and inference, and improving the recognition accuracy of a model in different applications. Further provided in the present invention is an implementation method for the all-optical nonlinear activator based on dual-light-beam cavity field modulation.