912 results about "Pulse light" patented technology

The invention provides a sensing system fusing optical fiber vibration and acoustic emission, a monitoring method and a device, and relates to the technical field of optical fiber sensing. The device comprises a light source module, a sensing optical fiber, a detection module and a controller, the light source module is used for respectively emitting modulation pulse light for vibration monitoring and continuous wave laser for acoustic emission monitoring; the sensing optical fiber is arranged along a monitored structure or area, and at least one optical fiber acoustic emission sensing head is connected to the optical fiber in series. The detection module collects Rayleigh scattering light and beat frequency signals at all positions in the sensing optical fiber through a circulator and a coherent light receiver, and optical signals are converted into electric signals; wherein the electric signals comprise vibration electric signals and acoustic emission electric signals; the signal processing unit carries out phase demodulation and envelope analysis processing on the collected vibration electric signals and acoustic emission electric signals so as to obtain vibration waveforms and acoustic emission event space-time information along all points of the optical fiber. According to the invention, a monitoring task fusing vibration and acoustic emission can be accurately completed.

The invention discloses a nanosecond particle velocity measurement method based on orthogonal line polarization beam splitting, and belongs to the technical field of particle image velocity measurement. The method comprises the following steps: providing two linear polarization state orthogonal double-pulse lasers, and respectively outputting S polarization pulse light beams and P polarization pulse light beams; the four pulse light beams are combined through the double-path laser beam combining mirror set and output to the sheet light mirror set, and a plane illumination jet flow field with the thickness smaller than or equal to 1 mm is formed; scattered light is separated according to a polarization state by using a polarization beam-splitting cubic prism, and particle images under S polarization and P polarization are respectively captured by two double-exposure cameras which are orthogonally arranged; five kinds of time sequence control are triggered through a multi-channel synchronous controller; processing the view field deviation of the two cameras by adopting a block polynomial alignment method; and calculating a particle velocity field based on a particle tracking velocity measurement algorithm. According to the invention, the polarization debugging error is reduced, the homogeneity error after beam combination is obviously reduced, the coincidence degree of the four beams of planar light is improved, and a high-precision universal alignment scheme is provided for the multi-camera PTV technology.

The invention relates to the technical field of engineering structure health monitoring, and discloses a smart cable monitoring system, which comprises a smart cable body module, a central steel wire and a fiber bragg grating smart rib are coupled through a hot cast anchor process, and the smart cable body module is used for sensing cable body strain and converting the cable body strain into an optical signal; the signal acquisition device comprises an optical signal transmitting device and a receiving device, the transmitting device directionally transmits a pulse light source to the fiber bragg grating smart rib, and the receiving device acquires multiple groups of light beams refracted and dispersed by a grating; and the data analysis platform solves the strain of the fiber bragg grating by processing the optical signal. The intelligent cable monitoring system and device aim at solving the problems that in the prior art, manual inspection is limited by labor cost and detection frequency, a single sensor is difficult to achieve multi-dimensional data synchronous collection, data transmission delay is high, and the requirement for real-time safety monitoring of an engineering structure cannot be met.

A method of scanning a field of view implemented by a Light Detection and Ranging (LIDAR) system includes transmitting pulsed light into the field of view; receiving, by a photodetector array, light from the field of view, wherein the photodetector array is configured to receive the light from objects in the field of view corresponding to ambient light and the pulsed light reflected therefrom; generating, by the photodetector array, DC signal components exclusively attributed to receiving the ambient light and AC signal components exclusively attributed to receiving the pulsed light; separating, by a processing circuit, the DC signal components from the AC signal components; generating, by the processing circuit, a two-dimensional image that represents an ambient light image of the field of view from the DC signal components; and generating, by the processing circuit, a three-dimensional image of the field of view from the AC signal components.

The invention discloses a method and device for optimizing metal powder laying additive manufacturing, the method comprises the steps that optical fiber beam combination is conducted on short pulse optical fiber laser and continuous optical fiber laser which are the same in wavelength to form a composite light source, and the pulse width of the short pulse optical fiber laser is the nanosecond level or the subnanosecond level; the composite light source is output to the galvanometer module through the beam combining optical fiber and then acts on the metal powder bed, and the low-cost and high-efficiency method of full coaxiality and concentricity of lasers of different light sources through the beam combining optical fiber is adopted, so that the printing stability, reliability and large-area uniformity are guaranteed; the short pulse laser and the continuous laser act on an irradiation metal area synchronously and coaxially all the time in the scanning process, metal powder bed melting manufacturing under the force oscillation effect is achieved, and the stability of a keyhole in the additive manufacturing process is improved. According to the method, the pore forming probability of laser powder laying sintering three-dimensional forming can be greatly reduced, the comprehensive mechanical property of a printed piece is improved, and wide popularization and application prospects are achieved.

An optical path testing device and an optical path testing method divide output light from a laser light source into a probe optical path and a local optical path and convert modulated light obtained by modulating input light of the probe optical path into probe light including pulsed light, generate a beat signal by causing signal light and input light of the local optical path to interfere with each other, acquire a signal indicating backscattered light in the optical fiber on the basis of the beat signal, and analyzes a loss distribution, generate the modulated light by performing, on the output light, modulation based on a frequency changing from a start frequency to an end frequency, generate an analysis signal by averaging the backscattered light in each different frequency band included in the beat signal between the different frequency bands and acquire the loss distribution.

The invention discloses a femtosecond laser three-dimensional pumping detection imaging method, which belongs to the technical field of ultrafast laser observation, and particularly comprises the following steps of: generating a laser pulse by using an ultrashort pulse laser, splitting the laser pulse by using a beam splitter to generate two beams of pulse light, namely pumping light and detection light, ablating a material by using the pumping light as an excitation source, reflection or transmission imaging is realized at different moments after the probe light passes through the time delay table; a detection angle is freely adjusted in space around a sample to be detected by rotating the light path propagation system, and a detection mode is switched between a reflection mode and a detection mode by rotating the imaging system; a multi-angle two-dimensional transient image is fused into a three-dimensional graph, plasma and a double-temperature model are expanded, the electronic dynamic characteristics of three-dimensional space distribution and the plasma eruption process can be calculated in an ultrafast scale, and three-dimensional information of a femtosecond laser ablation material is reduced. The problem that an existing imaging method cannot achieve three-dimensional imaging of the femtosecond laser processing ultrafast process at any angle in the space is solved.

The invention discloses a water quality monitoring device and a monitoring method thereof, belongs to the technical field of water quality monitoring, and solves the problems that trace hydrogen sulfide generated by sulfate reducing bacteria in a deposited layer at the bottom of a water tank which is not cleaned for a long time in a low-oxygen environment reacts with a platinum membrane electrode of a residual chlorine sensor to generate a platinum sulfide covering layer; and the electrode reading is continuously virtually high and drifts slowly. Comprising an optical transmitting module, an optical receiving module, a spectrum separation module, a signal conditioning module, a lock-in amplification module, a spectrum feature extraction module and a hydrogen sulfide recognition engine. Residual chlorine is monitored in a non-contact mode, deep ultraviolet pulse light is emitted to penetrate through a water body, a reflection spectrum is received, second derivative spectral characteristics are extracted through multichannel signal processing, and multivariable regression compensation is executed to calculate a real residual chlorine value after hydrogen sulfide interference characteristics are recognized. Meanwhile, the drift trend is quantified based on the double-time-constant integral, graded early warning is triggered, industrial standard signals are finally output, and the problem of electrode contact pollution is avoided in the whole process.

In a ranging device, a characteristic setting unit is configured to extract, from one or more pieces of received-light information representing changes with time in amount of received light acquired by the light receiving unit, at least one of a received-light amount range and a light reception time range of pulsed light other than emitted light from the light emitting unit, as a specified range. A received-light integration unit is configured to generate integrated received-light information by integrating the received-light information on a time axis with emission timings matched over a plurality of light receptions. A distance calculation unit is configured to exclude or identify distance noise formed of pulsed waveforms arising from pulsed light other than the emitted light, using the specified range extracted by the characteristic setting unit, and calculate a distance to the object reflecting the emitted light.

An intelligent automatic intense pulsed light therapeutic apparatus relates to the technical field of intense pulsed light therapy and comprises a therapeutic apparatus body, an auxiliary mechanism, an adjusting mechanism and a clamping mechanism, the therapeutic apparatus body is formed by combining a lower shell, a middle frame and an upper shell, a control panel is placed in the middle frame, and the clamping mechanism is arranged on one side of the middle frame. The middle frame is movably connected with a connecting wire harness through a clamping mechanism, the connecting wire harness is connected with external therapeutic equipment, an adjusting mechanism is arranged in the middle frame, and an auxiliary mechanism is arranged on the side, away from the connecting wire harness, of the middle frame; the clamping mechanism of the device adopts a ball and spring linkage design, so that quick insertion and extraction and stable locking with external equipment are realized; the auxiliary mechanism enables the detachable probe to be mounted conveniently and has an automatic dustproof function through structures such as a guide rail and a limiting frame; the adjusting mechanism is driven by an eccentric wheel, the light spot size and the energy density can be accurately adjusted according to the pressing degree, and the problems that traditional equipment is unstable in connection and a probe is inconvenient to replace are effectively solved.

Nitric-oxide ionization induced flow tagging and imaging (NiiFTI) is described. In one embodiment a method for characterizing a flow of a gas containing an agent includes ionizing the agent by a source of pulsed light emitting at a frequency overlapping a resonant transition frequency of the agent. In response to ionizing of the agent, a fluorescence of the gas is generated. The method also includes capturing at least one time-delayed image of the flow of the gas, where the capturing is time-delayed with respect to a pulse of the source of pulsed light. The method includes determining at least one property of the flow of the gas by analyzing the at least one time-delayed image of the flow.

The invention relates to the technical field of intelligent household appliances, and provides a refrigerator sterilization method and device, a refrigerator, equipment, a medium and a program product.The method comprises the steps that it is determined that the standby duration of a pulse function module is larger than first preset duration, and a sterilization signal is generated; and sending a sterilization signal to the pulse function module, wherein the sterilization signal is used for indicating the pulse function module to emit pulsed light in the refrigerator according to the sterilization mode. The standby duration of the pulse function module is timed, and when the duration that the refrigerator is not sterilized exceeds the preset duration, the sterilization signal for triggering the pulse function module to sterilize is automatically generated, so that when a user forgets to sterilize or feels that sterilization is too troublesome to manually start, the sterilization signal is automatically generated; and the pulse function module is controlled to automatically sterilize in the refrigerator, so that the food materials are prevented from breeding bacteria in the refrigeration process, and the food materials and the interior of the refrigerator are effectively guaranteed to be clean.

The invention relates to the technical field of measurement, in particular to the technical field of monitoring the state of invisible fluid by measuring and estimating the flow of the fluid through pulsed light signals, and particularly discloses a hydropower station gallery grouting state monitoring method based on pulsed light signal measurement. The method comprises the steps of grouting hole background parameter collection, real-time grouting process parameter collection, data processing and abnormal feature extraction, the grouting state is judged according to a matching result, and feedback decisions of grouting system maintenance, pressurization, pressure reduction, intermittent grouting or stop of replacement of new grout are given. The method can objectively and directly confirm that the target fracture and the stratum are filled with the grout, a non-tampering original data chain is provided for grouting quality evaluation, and the long-term safety and reliability of hidden projects such as hydropower station dams and dam foundations are greatly improved.

The present invention discloses a translucent food material sterilization device and method based on pulsed strong light. The device adopts a Pascal's triangle lamp layout and uses the Lagrange extreme value method to input the transmittance of different materials and solve the maximum lamp spacing under the premise of the specified benevolent effect of different materials. On the one hand, it can ensure that the material microelement at each physical position fully receives the pulse light source to achieve the preset sterilization effect; on the other hand, it can maximize the lamp spacing, reduce the number of lamps on display, and reduce equipment manufacturing and production costs. The algorithm for solving the lamp spacing based on the Lagrange extreme value method is applicable to all non-Newtonian fluid materials with a transmittance of ≥30% at 210-390nm. In addition, a pipe with a certain taper is used in the device to connect to the cavity, so that the radius value of the pipe tends to be continuous, and each array lamp in multiple independent cavities is efficiently sterilized, and finally flows out through the pipe of the last cavity.

The invention discloses a dual-wavelength mode-locked laser generating device and a dual-wavelength mode-locked laser generating method, and belongs to the technical field of optical communication, and the dual-wavelength mode-locked laser generating device comprises a pumping source, an optical integration module, a gain optical fiber, a saturable absorber and a dual-wavelength pulse independent polarization mode linear coupling regulation and control structure, linear coupling strength of cross-polarization components in two wavelength pulses is independently regulated and controlled by using a structure of a polarization controller and a polarization maintaining optical fiber, and dual-wavelength mode-locked pulse laser of different types of pulse combinations can be obtained. The coherent pulse light source with unique spectral characteristics can provide a low-cost light source for the fields of high repetition frequency optical combs, all-fiber architecture high repetition frequency soliton sequences and microwave photonics.

A photometric process measurement arrangement and a photometric measurement method The invention refers to a photometric process measurement arrangement (10) comprising a photometric immersion probe (20) comprising a photometer flashlight source (61) for providing photometric light impulses, a photometric detector arrangement (70) comprising a separate wavelength-selective detection element (71, 72, 73), and a photometer control (80) controlling the photometer flashlight source (61) and the detector arrangement (70), The photometer control (80) comprises: An impulse signal integrator (819, 829, 839) for integrating the electric impulses having the impulse intensity (Ui) generated by the detection element (71, 72, 73) of one impulse integration cycle (204; 221; 264), a measurement cycle control (90) for adapting the total number of 20 integrated cycle impulses of an impulse integration cycle (204;221;264) to the impulse intensity (Ui) of the single electric impulses, an A / D-converter (81, 82, 83) for converting the voltage of the impulse signal integrator (819, 829, 839) in an optional compulsory A / D conversion interval (100) after the impulse integration cycle (204;221;264), and an A / D-conversion management module (150) for balancing the total number of A / D conversion intervals (100-111) within a time frame (F), whereas the number of supplementary A / D conversion intervals (101-111) after the compulsory A / D conversion interval (100) depends on the length of the corresponding impulse integration cycle (204; 221; 264).

The invention discloses a system and method for generating, regulating and controlling a partially coherent space-time light field. The system comprises a pulse shaping assembly composed of a plurality of optical elements and an incident light source used for providing a completely coherent ultrafast pulse light field. An optical element in the pulse shaping assembly comprises a first blazed grating, a first cylindrical lens, a two-dimensional dynamic holographic modulator, a second cylindrical lens and a second blazed grating which are sequentially arranged in the light field propagation direction. The focal lengths of the first cylindrical lens and the second cylindrical lens are the same, and the distance between the adjacent optical elements is equal to the focal lengths of the first cylindrical lens and the second cylindrical lens; the two-dimensional dynamic holographic modulator is used for loading a specific complex amplitude modulation function to reconstruct the spatial-spectral characteristics of the light field. According to the invention, the two-dimensional space-spectrum function of the pulse is dynamically modulated, the generation of the partially coherent space-time wave packet is realized, and the amplitude and structure distribution of the space-time coherence can be designed and regulated as required.

The invention belongs to the technical field of reservoir calculation, and relates to a multi-dimensional pulse reservoir calculation method and system based on a semiconductor laser. The multi-dimensional pulse reservoir calculation method comprises the following steps: encoding a signal to be processed to generate an original optical signal; injecting the original optical signal into a semiconductor laser, and collecting a spike pulse optical signal containing to-be-processed signal feature information generated by the semiconductor laser under excitation of the original optical signal; performing photoelectric conversion on the spike pulse optical signal to obtain a time domain signal; amplitude features, quantity features and time position features of spike pulses in the time domain signals are extracted, and amplitude feature virtual nodes, quantity feature virtual nodes and time position feature virtual nodes are constructed; splicing the amplitude feature virtual node, the quantity feature virtual node and the time position feature virtual node to obtain a reserve pool state vector of an extended dimension; and obtaining an output signal of the multi-dimensional pulse reservoir calculation system based on the reservoir state vector of the extended dimension.

A hair removal device includes a housing, a pulse light source, an air duct, and a fan. The fan is hollow inside. The housing is provided with a light outlet, an air inlet and an air outlet. The pulse light source is provided inside the housing, pulse light emitted by the pulse light source is emitted from the light outlet; an air duct is provided in the housing and in communication with the air inlet and the air outlet, and the air duct passes through two sides of the pulse light source, respectively; and the fan is provided within the air duct for generating an airflow, to make the airflow enter from the air inlet and pass through the air duct and exit from the air outlet. A portion of the air duct is provided on two sides of the pulse light source.

The utility model relates to the technical field of coated glass detection, in particular to a coated glass film surface detection device, which comprises a light emitting unit, a light receiving unit, a signal detection unit and an alarm unit, the light receiving unit receives the reflected light and converts the reflected light into an electric signal, whether the film surface direction of the coated glass is correct or not is judged through processing and logic analysis of the signal detection unit, if so, an instruction is sent to the alarm unit, and the alarm gives an alarm while the glass conveying production line is paused; according to the invention, data signal acquisition and processing of the two surfaces of the coated glass can be completed synchronously, the detection efficiency and the applicable type of the coated glass are greatly improved, interference of local defects of the glass and ambient light on a detection result is eliminated, and the detection accuracy is improved.

The invention belongs to the technical field of agricultural machinery and intelligent control, and particularly relates to an intelligent precise weeding robot based on multispectral recognition. The robot aims at solving the problems that in the prior art, due to visible light morphological recognition, the forms of crops and weeds are similar, and the recognition precision is low and the robustness is poor in the complex field environment. The robot comprises an autonomous mobile platform and a sensing operation assembly, the sensing operation assembly integrates a multi-mode sensing unit, a data fusion and decision core and a high-energy thermal ablation module, and the multi-mode sensing unit provides eight narrow-band pulse light with specific wavelengths through an active light source illumination module. Realizing synchronous acquisition of spectrum and space information by combining multispectral imaging and three-dimensional profile measurement; the data fusion and decision core performs registration, segmentation and classification on multi-source data to generate weed target coordinates; and the high-energy thermal ablation module implements 1470-nanometer laser accurate ablation based on the coordinates, and verifies the operation effect in real time through coaxial infrared thermal imaging. By means of the technical scheme, high-confidence-coefficient distinguishing and millimeter-level lossless precise weeding of crops and weeds in the complex farmland environment can be achieved.

The invention relates to a synchronous control method and device for a wireless external flash lamp, equipment and a medium, and the method comprises the steps: building communication connection between a mobile phone end and an external flash lamp device based on Bluetooth low energy (BLE), so as to send a triggering synchronization instruction to the external flash lamp device through the communication connection; based on the receiving timestamp of the trigger synchronization instruction and a preset exposure prediction model, calculating corresponding target trigger time, and storing the trigger synchronization instruction and the corresponding target trigger time into a time sequence cache queue; traversing the time sequence buffer queue, and controlling the flash unit to output a first section of pulse light when the current system time and the target trigger time meet a target trigger time condition; and according to the illumination mode of the mobile phone terminal, controlling the flash unit to output at least one section of additional power-adjustable flash after the first section of pulse light so as to realize multi-section flash output control. The method has the effect of improving the shooting quality of the equipment.

The invention refers to a photometric process measurement arrangement (10) with a photometric immersion probe (20). The photometric immersion probe (20) comprises a photometer flashlight source (61) for providing photometric light impulses, a photometric detector arrangement (70) comprising at least two separate wavelength-selective detection elements (71, 72, 73), and a photometer control (80) controlling the photometer flashlight source (61) and the detector arrangement (70). The photometer control (80) comprises several impulse signal integrators (819, 829, 839) for integrating the electric impulses generated by the detection elements (71, 72, 73), several A / D-converters (81, 82, 83) for converting the voltages of the impulse signal integrators (819, 829, 839) when high-precision-converting trigger ports (H) of the A / D-converters (81, 82, 83) are triggered, and a measuring cycle control (90) with an integration target memory (94) memorizing an integration target voltage value (Ut). The photometer control (80) is provided with a high-precision-request port (93) for synchronously triggering the high-precision-converting trigger ports (H) of all A / D-converters (81, 82, 83) after the voltage of the first of all impulse signal integrators (819, 829, 839) has exceeded the memorized integration target voltage value (Ut).

The invention provides a pulsed light amplification multiplexing array based on extrinsic optical fiber FP (Fabry-Perot) sensors, which comprises a light emitting module, a sensing array, an amplification module and a signal processing module, pulse signal light emitted by the light emitting module passes through the first sensing sub-time division array and the amplification module and then is transmitted to the second sensing sub-time division array, the light emitting module is used for generating pulse signal light of a wavelength sequence, and after the pulse signal light of the current wavelength completes transmission of the whole sensing array and all returned light is received by the signal processing module, the pulse signal light is transmitted to the second sensing sub-time division array. And the emission of the pulse signal light with the next wavelength is started. According to the invention, the array self-noise can be suppressed, the signal-to-noise ratio is improved, and the multiplexing scale is expanded.

The invention provides a multi-channel detection system and method based on quantum weak measurement, which can be applied to the technical field of optical sensing and detection systems. The system comprises: a pre-selection module performing pre-selection on an initial pulsed light sequence to obtain a pulsed light sequence; the circulator sends any pulse light in the pulse light sequence to the N detection modules, and sends modulated light returned by the N detection modules respectively to the post-selection and data processing module; n detection modules equally divide any pulse light into N sub-pulse light, and weak coupling is carried out on the N sub-pulse light and to-be-detected signals at different spatial positions to obtain N modulated light; and the post-selection and data processing module performs post-selection and phase calculation on each modulated light, and obtains the size of the signal to be measured at the spatial position corresponding to the modulated light according to the calculated phase. The system realizes multi-channel high-precision weak measurement, and is low in system hardware complexity and low in cost.

The invention discloses a photon-assisted microwave signal time-frequency amplitude-phase measurement system and method, and the system is characterized in that a pulse light source outputs a light pulse which enters an input end dispersive medium to complete pulse broadening, and then the light pulse enters an electro-optical modulation module; meanwhile, the power divider receives the microwave signal and divides the microwave signal into two paths to be input into an upper sub-modulator and a lower sub-modulator of the electro-optical modulation module so as to modulate optical pulses; a modulated optical signal output by the electro-optical modulation module passes through an output end dispersive medium to complete a time convolution process, then the output optical signal is divided into two paths through the optical coupling module, the two paths sequentially pass through the polarization controller, the polarization beam splitter, the photoelectric detector, the analog-to-digital converter and the digital signal processor, position information and amplitude information of an electric pulse are collected, and the position information and the amplitude information of the electric pulse are obtained. And obtaining time, amplitude, frequency and phase information of the microwave signal. The time, frequency, amplitude and phase information of the microwave signals can be measured at the same time, complex back-end processing is not needed, and the processing speed is high.

The invention discloses a 2-micron-waveband adjustable all-fiber high-repetition-frequency pulse light source generator, belongs to the technical field of laser light source manufacturing, and aims to solve the problem that an existing 2-micron-waveband passive all-fiber mode-locked pulse laser light source is difficult to give consideration to fs-magnitude narrow pulse width and ultra-short-cavity-length high-fundamental-frequency repetition frequency output. The laser comprises a semiconductor laser pumping source, a wavelength division multiplexer, an extrusion type polarization controller I, a polarization-maintaining highly-doped gain fiber, an extrusion type polarization controller II, a long cone region tapering micro-nano fiber, a 2 * 2 fiber coupler and a fiber Faraday mirror. According to the invention, the long-cone micro-nanofiber is introduced into the cavity, and the long-cone micro-nanofiber has the characteristic of high nonlinear coefficient, so that the cavity length can be greatly shortened, enough nonlinear phase shift can be accumulated, and fs-magnitude ultrashort pulse can be output. The device is low in loss, stable in performance and easy to integrate with other optical fiber systems. The laser can be applied to the fields of optical communication, non-metallic material processing, laser medical treatment, intermediate infrared laser pumping sources and the like.

The invention provides a multi-gas sensing detection method and device based on microwave modulation FLRD, the multi-gas sensing detection device is built based on microwave modulation FLRD, and the method comprises the following steps: determining characteristic frequency and shortest switching time; establishing a multi-wavelength absorption physical model; a gas concentration vector is solved by adopting a regularization inversion algorithm, and regularization parameters are optimized through cross validation; and temperature compensation is realized through an adaptive Kalman filtering algorithm. Compared with a traditional time domain pulse measurement mode, the method can accurately obtain the intra-cavity ring-down time without a high-speed pulse light source and an oscilloscope. According to the method, a network vector analyzer is used for extracting a system transfer function, high-sensitivity and low-noise gas absorption measurement is realized, and the system cost and complexity are remarkably reduced. Parallel recognition of multiple gas components can be realized through frequency domain analysis and a regularization inversion algorithm; and the Kalman filtering algorithm with temperature compensation is combined, so that the measurement stability and the environmental adaptability are effectively improved.

The invention discloses a high-power torsional mode cavity single-frequency laser based on a slab crystal, which belongs to the technical field of solid lasers and comprises two pumping sources, two pumping shaping mirror groups, two reflectors, a slab laser crystal, three quarter-wave plates, an electro-optic Q-switched crystal, a polarizer, a total reflection plano-concave cavity mirror and an output cavity mirror. Pump light emitted by the two pump sources passes through the two pump shaping lens sets and then passes through the two reflectors to be injected into the lath laser crystal, and the first quarter-wave plate and the third quarter-wave plate are combined to achieve the torsional mode cavity technology. The electro-optic Q-switched crystal, the second quarter-wave plate and the polarizer which are sequentially arranged are combined to modulate continuous light in the resonant cavity into pulsed light, and the total reflection plano-concave cavity mirror and the output cavity mirror are combined to serve as a cavity mirror of the resonant cavity. According to the invention, the existing pumping power limited to tens of watts can be improved to hundreds of watts, the existing single-frequency laser power limited to watt level can be improved to tens of watts, and the cooperative improvement of high power and single-frequency characteristics is realized.

The invention discloses a near-infrared wide-spectrum pulse light source generator, belongs to the technical field of laser light source manufacturing, and aims to solve the problems of complex system structure and high cost due to the fact that a supercontinuum laser generates supercontinuum through multi-stage power amplification in the prior art. The device is composed of a first semiconductor pump laser, a first wavelength division multiplexer, a first gain optical fiber, a first filter, a first dispersion compensation optical fiber, a first high-nonlinearity optical fiber, a first isolator, an optical fiber coupler, a second semiconductor pump laser, a second wavelength division multiplexer, a second gain optical fiber, a second filter, a second dispersion compensation optical fiber, a second high-nonlinearity optical fiber and a second isolator. According to the invention, the characteristic of high mode-locked pulse energy of the Mmyshev oscillator is utilized, multi-stage power amplification is not needed, and the super-continuum spectrum can be directly generated, so that the system structure is simplified, and the cost is reduced; the laser light source can be applied to multiple fields of laser sensing, photoelectric countermeasure, remote sensing detection, optical imaging and the like.