276 results about "Single beam" patented technology

The invention discloses an off-line adjusting device and method for light spot position offset adjustment, and belongs to the technical field of optical precision adjustment. The device comprises a single-beam light-emitting direction adjusting device, a single-beam light-emitting position adjusting device and a multi-beam angle adjusting device which can be formed on the same off-line platform by configuring different detection units. The method comprises the following steps of: calibrating a light source by using the devices in sequence, and constructing an ideal light source assembly with accurate direction, accurate position and multi-beam parallelism; the whole device is installed to a complete machine system to serve as an absolute reference, and a complete machine optical element is adjusted to make a light spot reach a preset position; and finally, replacing with a customized light source and carrying out fine adjustment by taking the calibrated optical element as a reference. According to the method, decoupling of light source calibration and optical element calibration is achieved through the process of establishing the benchmark offline, transmitting the benchmark through the whole machine and customizing light source adaptation, the installation and adjustment precision, efficiency and repeatability are remarkably improved, and dependence on operation experience is reduced.

The invention relates to the technical field of marine remote sensing observation, in particular to a squint ATI-SAR multi-view sub-aperture focusing marine vector flow inversion method. The method comprises the following steps of observation of strabismus ATI-SAR loads, focusing of multi-view sub-apertures, inversion of multi-view HLOS flow velocity, overdetermined equation solving of vector flow and checking of internal and external consistency of the vector flow. Non-side-looking observation is adopted for the load, observability of components in the rail direction is enhanced through physical squint, and low cost of a single beam and system conciseness are kept; according to the method, the contribution of the azimuth component is in direct proportion to the squint angle sine, so that the along-track component far greater than the virtual squint can be obtained, the solvability of the equation is improved, and the inversion instability is reduced; visual and reliable information observation is achieved with small system burden, equipment investment is saved, large-scale vector flow on-orbit observation can be achieved, and engineering is easy to achieve. According to the method, three-step closed-loop processing is carried out, the bottleneck of the traditional technology is solved, and the engineering availability and the result robustness are broken through.

A lithium battery detection device based on BB optical pump magnetic imaging comprises a magnetic shielding cylinder and a substrate arranged in the magnetic shielding cylinder, and a laser, an optical lens system, an atomic gas chamber system, an array lens and an array photoelectric detector are sequentially arranged on the working face of the substrate from left to right; the atomic gas chamber system contains alkali metal atoms and buffer gas; a non-magnetic objective table for placing a lithium battery to be tested is arranged above the atomic gas chamber; according to the device, the array lens is adopted to split and focus a single beam of detection laser into small light spots which are respectively irradiated on different photoelectric detectors, and magnetic field information of a plurality of space point locations is detected at one time, so that the consistency and imaging quality of a subsystem are improved, and the system cost is saved.

The invention belongs to the technical field of bridge construction, and particularly relates to a single-point multiple-jack synchronous beam falling forced displacement method prestress applying method which comprises the steps that S1, a plurality of temporary supporting points are arranged beside a permanent support, and a self-locking type beam bearing mechanism is installed on each temporary supporting point; meanwhile, a hydraulic jack is arranged at each temporary supporting point, the multiple hydraulic jacks are connected to a PLC integrated hydraulic synchronous control system through hydraulic pipelines, and synchronous linkage mechanisms are arranged among the multiple hydraulic jacks. According to the single-point multiple-jack synchronous beam falling forced displacement method prestress applying method, when an inner jacking pipe sleeve pushes a supporting cushion block to ascend and descend, through meshing of a self-locking gear and two self-locking racks, a secondary telescopic block can be forcibly driven to move synchronously, so that continuous stretching and retracting of a bearing beam are achieved, the cushion block does not need to be manually replaced after single beam falling, and the working efficiency is improved. The system automatically adjusts the height to meet the multi-stroke circulating beam falling requirement, and the construction efficiency is improved.

The invention provides an integrated measurement device, a beam parameter quality control method and related equipment, relates to the technical field of particle radiotherapy, and is used for rapidly measuring beam parameters of pencil beam scanning points in arc proton therapy in real time. Comprising a plurality of measurement units which are arranged at intervals along a beam transmission direction, the plurality of measurement units are periodically and repeatedly arranged to form a two-dimensional orthogonal sampling grid, and time-space distribution data of a beam cross section are synchronously acquired through one-time beam output; the analysis module is used for processing the beam parameters output by the signal acquisition and processing module in real time, and the beam parameters comprise the scanning point position, the beam spot size, the charge quantity and the range; beam parameters of a pencil beam scanning point can be rapidly measured in real time, and accurate and efficient measurement is ensured; according to the matched beam parameter quality control method, the accuracy and reliability of arc proton treatment are improved through operations such as multi-angle measurement, parameter correction, quality control interval optimization and real-time dynamic adjustment.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of one or more beam failure detection reference signal sets corresponding to a list of component carriers. Whether a component carrier is included in the list or whether a beam failure detection reference signal set of the one or more beam failure detection reference signal sets is applicable to the component carrier, or both, may be based on whether the component carrier is of a first type configured for a single beam failure detection reference signal set or is of a second type configured for multiple beam failure detection reference signal sets. The UE may monitor one or more component carriers included in the list for beam failure using the one or more indicated beam failure detection reference signal sets.

The invention relates to the technical field of water supply and drainage robots, and discloses a submersible type multifunctional water supply and drainage robot which comprises a robot body and an auxiliary operation unit. Two groups of water pumps are arranged in the main body, and multiple groups of drainage through holes are formed in two sides and the bottom of the main body and are communicated with the water pumping cavity to form a low-resistance multidirectional water taking and drainage channel; a scanning sonar, a single beam, an electronic compass, a tilt angle sensor, a harmful gas detection sensor, a camera, a lighting lamp and the like are arranged, the system cooperates with an electric control system, remote and autonomous operation is supported, path planning is conducted based on environment perception, and the unit time drainage efficiency in a complex environment is improved in cooperation with a pump set. The auxiliary operation unit is a mechanical arm installed on the main machine body and sequentially connected with a first connecting arm, an angle adjusting arm and a second connecting arm, the tail end of the auxiliary operation unit is provided with a clamping mechanism and a crushing mechanism, and the auxiliary operation unit is used for obstacle clearing and narrow position fixed-point crushing and guarantees continuous operation and safety. The method is suitable for flood prevention and fighting, urban inland inundation, mine, underground pipe gallery, tunnel drainage and other scenes.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may report an initial capability to maintain latency conditions and a number of supported beams (e.g., a threshold number of beams the UE can support for relaying downlink communications such as synchronization signal blocks (SSBs)). A network entity may then transmit multiple SSBs directly to the repeater (e.g., on the same beam). The repeater may relay the SSBs across multiple beams to provide service to a coverage area. After relaying signaling between served UEs and the network entity, the repeater may transmit a report requesting a specific (e.g., improved or more accurate) number of beams (e.g., more beams or fewer beams than the number of SSBs initially provided). Upon receiving an updated configuration of a number of beams, the repeater may receive more SSBs on a single beam, and relay SSBs on the updated number of beams.

The invention relates to the field of nano science and nano technology, in particular to a low-power particle capture and local thermal detection method and device based on tip-enhanced Raman optical tweezers, under laser irradiation, directional optical force is generated through an enhanced electric field between a nano tip and metal particles, and capture of the metal particles is achieved; raman scattering on the surface of the needle tip can be excited through focused laser, and the local temperature of the needle tip can be obtained by analyzing the change of a Raman characteristic peak. According to the method, directional optical force is generated through an enhanced electric field between the needle tip and the metal particles to capture the metal particles, the problem that the metal particles cannot be captured by single-beam 532 nm laser is solved, the power density of captured particles is reduced, and the adverse effect of the heat effect on capture is reduced. The method also can amplify the Raman signal of the needle tip to realize Raman detection of a local position, realizes temperature monitoring at the capture position, and lays a foundation for exploring the influence of the thermal effect on the capture process.

The invention discloses a micro-droplet long-distance optical force traction system based on a nanometer optical fiber. The system comprises an optical fiber laser, a nano optical fiber, micro-droplets, an imaging optical element and an imaging camera, the nanometer optical fiber comprises a first optical fiber non-tapering area, a second optical fiber non-tapering area, a first optical fiber taper area, a second optical fiber taper area and a uniform waist area located in the middle. And the micro-droplets coat the uniform waist region of the nano optical fiber. The transmission loss of the nanometer optical fiber is low, the total length can reach the meter level, a transmission light field in the uniform waist area of the nanometer optical fiber interacts with the micro-droplets, forward scattering is enhanced through momentum exchange, and therefore long-range optical traction force is applied to the micro-droplets. According to the invention, the problem of short luminous traction action distance (millimeter level) based on a single light beam in the prior art is solved, and the device has the advantages of long-distance control (centimeter to meter level), high precision, high flexibility, good stability and good biocompatibility, and can be applied to the biochemical fields of cell control and sorting, biological detection, micro-droplet reaction and the like.

The invention discloses an unknown environment mapping method for a single-beam laser of aircraft, which belongs to the field of three-dimensional map reconstruction technology. Firstly, the data collected by a single-beam LiDAR is aligned with the timestamp of the stepper motor, and the obtained point cloud data is filtered and matched to obtain three-dimensional map information. The pose of the aircraft is estimated by the wheel odometer and IMU, and the loop detection is performed to reduce the cumulative error and update the three-dimensional map information in real time. The frontier search algorithm is used to determine the target point of the aircraft flight, the A* algorithm is used to plan the path trajectory, and the B-spline curve optimization algorithm is used to make the trajectory of the aircraft smoother. The control command is sent to the aircraft, and then the global three-dimensional map of the unknown environment is obtained.

The invention relates to the technical field of micro-fluidic chips, and discloses a multi-fluid effect synergistic three-dimensional single-row focusing micro-fluidic chip and a method for single-line focusing of polystyrene microspheres by using the micro-fluidic chip, the micro-fluidic chip comprises a sample liquid inlet, one end of the sample liquid inlet is provided with an inertia focusing link, and the other end of the sample liquid inlet is provided with an inertia focusing link; a tapered flow guide cone structure is arranged between the inertial focusing link and the sample liquid inlet and is used for inhibiting the initial dispersion and diffusion trend of particles at the sample liquid inlet; the bionic gradient height structure is positioned at one end, far away from the tapered flow guide cone structure, of the inertial focusing link and is used for focusing and compressing the particles in the vertical direction; a sheath fluid focusing area is arranged at one end, far away from the inertial focusing link, of the bionic gradient height structure, and a sheath fluid inlet and a chip mixed liquid outlet are sequentially formed in one end, far away from the bionic gradient height structure, of the sheath fluid focusing area. According to the invention, efficient three-dimensional centered arrangement is realized, dynamic convergence of a particle trajectory from a dispersion state to a central single beam is realized, and a digital focusing regulation capability is realized.

The invention provides a signal transmission method and a communication device. The method comprises the steps that a configurable intelligent surface RIS device receives a signal from at least one first communication device; the signal is sent to at least two second communication devices through multiple beams, and the beam vector of the multiple beams is determined according to the beam vector of the single beam corresponding to each second communication device in the at least two second communication devices. Based on this, multiple second communication devices can be served at the same time through the RIS device, and the system capacity is improved.

This invention relates to a closed-loop measurement device and method for the angular velocity of a micro-gyroscope based on a single-beam optical trap, belonging to the field of inertial navigation technology. It includes a vacuum cavity, a micro-gyroscope, an optical trap levitation module, a rotation detection module, and a feedback control module. The micro-gyroscope is placed inside the vacuum cavity, and the optical trap levitation module is positioned below the vacuum cavity. The optical trap levitation module can converge a first laser beam from bottom to top into the vacuum cavity to form a vertical optical trap, thus leviting the micro-gyroscope. The rotation detection module can horizontally converge a second laser beam onto the micro-gyroscope and split the second laser beam, after its polarization direction has been changed by the rotating micro-gyroscope, into two laser beams with different intensity ratios. The feedback control module can analyze the intensity ratio of the two laser beams and provide feedback control to the rotational angular velocity of the micro-gyroscope. This invention features high bandwidth, low noise, and high accuracy.

The utility model relates to the technical field of microfluidics, and discloses an inertia micro-fluidic chip for cross-scale packaging, which comprises a first water phase channel, a second water phase channel, a mixing channel and an oil phase channel, the output ends of the first water phase channel and the second water phase channel are communicated with the mixing channel in an intersection manner; the oil phase channel is of a closed-loop structure, and the mixing channel penetrates through the output end of the oil phase channel and communicates with the oil phase channel. The first water phase channel can focus introduced agrobacterium cells, so that the agrobacterium cells can enter the next part of reaction channels in a regular arrangement state. The accumulation of the change along the channel can cause the new inertial migration behavior of the agrobacterium, compared with a straight channel, the number of gathering positions and the required channel length can be effectively reduced, and meanwhile, the agrobacterium is focused into a single beam, so that the agrobacterium can be converged with soybean cells in a regular arrangement state.

The application relates to the technical field of antennas, in particular to a dual-mode high-gain millimeter wave beam scanning antenna, which comprises a bottom dielectric substrate provided with a first excitation port and a second excitation port at two ends; a top dielectric substrate comprising a '+'-shaped dielectric cover layer arranged on the top of the bottom dielectric substrate; parallel plate slot waveguides connected with a first substrate integrated waveguide horn and a second substrate integrated waveguide horn at two ends respectively; a first waveguide transition structure connected with the first excitation port and the first substrate integrated waveguide horn at two ends respectively; and a second waveguide transition structure connected with the second excitation port and the second substrate integrated waveguide horn at two ends respectively. The application can realize wide-range beam scanning including backward end radiation, meanwhile, high-gain single beam scanning is maintained, the application has the characteristics of simple structure, easy integration and processing, high gain and full coverage of the upper half space, and greatly improves the performance of a millimeter wave wireless communication system.

This invention provides a beam-deflecting metasurface and a quantum sensor. The beam-deflecting metasurface includes a metasurface array, which in turn includes metasurface units. Each metasurface unit comprises a substrate unit block and a copper ring. In any metasurface array, the outer diameter of the copper ring is uniform. By changing the inner diameter of the copper ring, the transmission phase of the corresponding metasurface unit is altered. The beam-deflecting metasurface of this invention effectively controls the coupling and probe beams frequently used in quantum sensors, preventing the probe beam from being affected by the coupling beam. The overall structure is simple, and the cost of the beam-deflecting metasurface is low, enabling the quantum sensor to have a wide range of applications. Because the copper ring has a symmetrical structure, it is polarization-independent. For both the probe and coupling beams, the transmittance of the beam-deflecting metasurface remains above 90%, ensuring efficient transmission of the required optical signals.

The invention relates to the technical field of wireless communication, and provides an antenna. The antenna comprises an antenna body and a waveguide Butler. The waveguide Butler is connected with at least two input ends and at least two output ends. Each input end is configured to be connected with a signal source. The output end is connected with the antenna body. The waveguide Butler is configured to couple input signals from at least two input ends into a signal, and select one output end to send the signal to the antenna body. Therefore, all feed sources corresponding to a single wave beam can be fully utilized, the feed source utilization rate is improved, and the feed source utilization rate reaches 100%.

The application discloses a kind of monitoring devices of pressure fluctuation frequency and amplitude in cavitation collapse process, including water tank, cavitation generator, magnetic fluid, magnetic field device, laser generator, optical splitter, laser probe and receiver;Optical splitter is emitted by single beam laser of laser generator and is divided into two beams, one is emitted as laser, frequency is f ;Another is as reference laser, frequency is f + f r ;Laser probe exports and irradiates on the tip of magnetic fluid by emitting laser, and reflection is formed to form reflected laser, and its frequency is f + f D ;Receiver, accept reflected laser, and it has reference laser inside by optical splitter, and its frequency is f + f r The application can master the whole dynamic data of quantized cavitation collapse by monitoring the frequency and amplitude of whole process pressure fluctuation caused by cavitation collapse in liquid environment through magnetic fluid magneto-rheological effect, tip surface effect and Doppler effect, which provides important technical means for single-cavity theory development and hydraulic machinery cavitation flow research.

The invention relates to the field of photocuring additive manufacturing, in particular to a double-beam coupling pulse type photocuring additive manufacturing method and device.The method comprises the following steps that S1, a purple laser beam emitted by a purple laser sequentially passes through a purple DMD chip and a long-wave-pass dichroscope and then enters a focusing objective lens; patterning and projecting to photosensitive resin through a focusing objective lens to form an initial curing area with any section; s2, a red light laser beam emitted by a red light laser sequentially passes through a red light DMD chip and a short-wave-pass dichroscope to enter a focusing objective lens, and is projected to the boundary of the initial curing area in a patterning manner through the focusing objective lens, so that boundary modification is realized; s3, the purple laser beam and the red laser beam construct a complex three-dimensional micro-nano structure layer by layer in a double-beam coupling mode; and the defects of inaccurate boundary morphology, high residual stress and the like in the existing single-beam curing technology can be effectively overcome.

The utility model provides a large tonnage cargo lift car frame structure, the large tonnage cargo lift car frame comprises monomer beam frames, transverse connecting beams and cable-stayed structures, the monomer beam frames are rectangular frame structures, the three groups of monomer beam frames are arranged in the channel direction of a lift car, all the monomer beam frames are fixedly connected through the transverse connecting beams, and the cable-stayed structures are fixedly connected through the cable-stayed structures. A channel structure for fixing the lift car is formed, a bottom bracket is arranged at the bottom of the channel structure in a supporting mode and forms a bearing face, the lift car is arranged on the bearing face, cable-stayed structures are arranged between the transverse connecting beams between the single beam frames, and the cable-stayed structures are fixedly connected with the upper ends and the lower ends of the adjacent single beam frames. The car frame is of a structure formed by combining a plurality of single beam frames, the single beam frames are combined in order to improve the load of the large-tonnage goods elevator, existing production and processing materials can be effectively utilized, the transverse connecting beams are main structures for connecting the single beam frames, and the connected structures are reinforced through the cable-stayed structures, so that the load capacity is improved.

The invention relates to a terahertz communication safety beamforming method and a communication system, and the method comprises the steps: observing a system state through an intelligent agent to construct a state vector, and the system state comprises channel state information of a legal user and a potential eavesdropper; outputting a beamforming vector according to the state vector through a strategy network in the intelligent agent; the power constraint layer normalizes the beam forming vector to obtain a final beam forming vector, and performs signal transmission; and calculating a reward value according to a result after signal transmission, and updating network parameters of the deep reinforcement learning agent based on the reward value. After training is completed, only one time of neural network forward propagation is needed for online decision making, the delay of single-time beam updating is lower than 1.5 ms, the complexity is far lower than that of a convex optimization method such as SDR, and the method is suitable for a terahertz high-speed real-time communication scene.

The invention relates to an intelligent design method for an equivalent single beam of a cable bearing bridge. The intelligent design method comprises the steps that basic design indexes of the cable bearing bridge are set; based on a BP neural network model, the basic design indexes are used for generating design parameters of an equivalent single beam of the cable bearing bridge, and the design parameters comprise section characteristics, dead load set degree and equivalent torsion mass; and establishing a finite element model of the equivalent single beam based on the design parameters of the equivalent single beam. The method comprises the following steps: firstly, setting a basic design index, and then quickly generating design parameters of an equivalent single beam based on a BP neural network model so as to establish a finite element model; dependence on experience of designers is reduced, determination difficulty of design parameters is reduced, particularly, when scheme comparison and selection are needed, design parameters corresponding to equivalent single beams are generated according to different basic design indexes, scheme comparison and selection efficiency is greatly improved, and reference is provided for main beam design decision making of cable bearing bridges.

Systems and methods for associating phase tracking reference signal (PTRS) and demodulation reference signal (DMRS) ports for multi-beam physical uplink shared channel (PUSCH) transmissions are described herein. A base station may provide, to a user equipment (UE), PTRS and DMRS port associations for the multiple beams on which the PUSCH is transmitted. In some cases, a 2-bit downlink control information (DCI) field may be used to alternatively provide single beam or multiple beam PTRS and DMRS port associations to a UE. For non-codebook (NCB) based transmissions, the UE may alternatively determine PTRS and DMRS port associations for multiple beams independently of any PTRS and DMRS port association indicated in DCI.

The invention provides a miniaturized single-beam multi-reflection atom magnetometer probe. The miniaturized single-beam multi-reflection atom magnetometer probe comprises a prism assembly, an alkali metal atom gas chamber and a second curved surface reflector. The prism assembly converts incident light into circularly polarized light and comprises a first optical surface for receiving the incident light and a second optical surface for emitting the circularly polarized light. The alkali metal atom gas chamber is arranged opposite to the second optical surface, the second curved surface reflector is arranged on one side, back to the second optical surface, of the alkali metal atom gas chamber, and the second curved surface reflector reflects circularly polarized light penetrating through the alkali metal atom gas chamber back to the alkali metal atom gas chamber. The second optical surface reflects the circularly polarized light emitted to the second optical surface from the alkali metal atom gas cell to the alkali metal atom gas cell. According to the invention, circularly polarized light can repeatedly pass through the alkali metal atom gas chamber, atoms are polarized for multiple times, the number of atoms is equivalently increased in a limited area, the ultimate sensitivity of the atom magnetometer probe is improved, and miniaturization and integration of the atom magnetometer probe are realized.

The invention provides an in-hole laser parallel processing device and method, relates to the field of laser processing, and aims to solve the problems of low in-hole structure processing efficiency and low in precision in existing laser processing, a single beam of laser is divided into multiple beams of parallel laser for simultaneous processing, and the processing efficiency can be doubled compared with that of a traditional single-point scanning mode. A plurality of feature points can be formed through one-time processing, so that the overall processing time is greatly shortened; each laser beam is provided with an independent condensing lens in one-to-one correspondence, so that the laser energy of each processing point can be accurately focused, the problems of aberration and the like possibly caused by using a single large lens are avoided, and the processing quality and precision of each point under parallel processing are ensured; a parallel beam splitting system which is complex in function and large in size is arranged outside a hole, only a reflector which is relatively simple in structure and a compact condensing lens array extend into the hole, and the problem that a complex optical system is integrated in a limited hole cavity is solved by adopting the design that the interior and the exterior are separated.

The application discloses a single-beam imaging device and method, and belongs to the technical field of microscopic imaging. The application adopts a single beam, utilizes the principle of time multiplexing continuous wave beam wavefront and fluorophore time suppression process, carries out time modulation between short time and long time, carries out wavefront modulation between excitation and suppression to realize imaging, simplifies the structure of the imaging device, and improves imaging super-resolution.

The utility model discloses a laser etching device, and relates to the technical field of optical fiber production and manufacturing. The laser etching device comprises a laser generator used for generating a laser beam; the bearing assembly is used for bearing and fixing the optical fiber; the optical assembly is used for dividing the laser beam into a first laser single beam and a second laser single beam and irradiating the first laser single beam and the second laser single beam to the two sides of the optical fiber respectively so as to etch the two sides of the optical fiber; in the embodiment of the invention, the first laser single beam and the second laser single beam symmetrically irradiate the two opposite sides of the optical fiber, so that the two opposite sides of the optical fiber are synchronously etched; specifically, the optical assembly comprises a spectroscope, a first galvanometer, a second galvanometer, a first focus lens and a second focus lens. According to the technical scheme provided by the utility model, the etching efficiency and the etching precision can be improved.

The application discloses a modified eccentric compression method considering torsional constraint stiffness of end cross beams. The steps are as follows: (1) obtaining relevant parameters of the beam bridge according to engineering data; (2) calculating the torsional constraint stiffness of the end cross beams to the main beam; (3) calculating the load transverse distribution coefficient at the fulcrum point through the lever principle method, and the single-web section main beam and double main beam bridge are calculated by using a single beam model, and the double-web three main beam and more main beam bridges with multiple pieces are calculated by using a double beam model; (4) calculating the load transverse distribution coefficient of the main beam in the longitudinal bridge direction at any position by the modified eccentric compression method considering the torsional constraint of the beam end; (5) considering the change of the load transverse distribution along the longitudinal bridge direction for the concentrated load, taking the load transverse distribution coefficient at the midspan position for the uniformly distributed load, and then calculating the load effect. The method considers the elastic support of the stiffness of the end cross beam to the torsional deformation of the main beam, and provides a new high-precision method for the load transverse distribution calculation of the box section beam bridge.

The invention discloses a Raman beam combination laser amplifier, relates to the technical field of laser, and aims to solve the problem of low conversion efficiency of an existing beam combination laser amplifier. A first bowl-shaped reflecting mirror and a second bowl-shaped reflecting mirror are coaxially arranged at the two ends of a columnar reflecting mirror assembly, the concave surfaces face the columnar reflecting mirror assembly, and a Raman laser crystal is arranged in the columnar reflecting mirror assembly; seed light output by the seed light module enters the Raman laser crystal through the center of the first bowl-shaped reflector; and a plurality of beams of fundamental frequency light output by the plurality of fundamental frequency light modules are obliquely incident to the Raman laser crystal from the side surface of the columnar reflector assembly. Each beam of fundamental frequency light of the Raman beam combination laser amplifier can be reflected for multiple times in the amplifier and interacts with the seed light for multiple times, the conversion efficiency of the single beam of fundamental frequency light is improved, the adjustment difficulty of the fundamental frequency light module is low, and the Raman beam combination laser amplifier is suitable for integrated use.