606 results about "Continuous light" patented technology

A system, apparatus and method directed to detecting damage to an optical fiber of a medical device. The optical fiber includes one or more core fibers each including a plurality of sensors configured to (i) reflect a light signal based on received incident light, and (ii) alter the reflected light signal for use in determining a physical state of the multi-core optical fiber. The system also includes a console having non-transitory computer-readable medium storing logic that, when executed, causes operations of providing a broadband incident light signal to the multi-core optical fiber, receiving reflected light signals, receiving reflected light signals of different spectral widths of the broadband incident light by one or more of the plurality of sensors, identifying at least one unexpected spectral width or a lack of an expected spectral width, and determining the damage has occurred to the optical fiber based on the identification.

The invention relates to the technical field of angle-resolved photoelectron spectroscopy experimental instruments, and discloses an angle-resolved multi-electron coincidence measurement system and method based on an event-type delay line detector, and the system comprises an angle-resolved energy analyzer; a detection surface of the event type delay line detector is divided into at least two independent areas, and the event type delay line detector is used for receiving photoelectrons in parallel and independently outputting event signals; the external trigger and synchronization module is used for generating a unified trigger period to establish a global time reference; the time digital reading module is used for receiving the event signal and generating a timestamp; and the data acquisition and processing module is used for carrying out association judgment and selection based on the timestamps in the same triggering period. The dead time is reduced through multi-region parallel reading, unified time base calibration is achieved through time base line calibration and delay compensation, multi-electron coincidence measurement can be achieved under the condition that the angular resolution capability is kept, and the method is suitable for pulse or continuous light sources.

The invention discloses a continuous variable quantum key distribution method, device and system, and belongs to the field of wireless communication. Firstly, a sending end generates continuous light pulses for discrete coding, a one-dimensional discrete modulation signal is generated, quantum signal light is generated through an attenuator, and the quantum signal light is coupled to a quantum channel for transmission. Then, a receiving end adopts a homodyne detector to measure the regular component of the quantum signal in a self-calibration manner; and after a local measurement base direction and a phase drift angle introduced by a dynamic compensation quantum channel are adjusted in real time, a covariance matrix is calculated and input into a post-processing module, the code rate of the system is further calculated, and a security key is generated by using a protocol between a receiving end and a transmitting end. According to the device, the intensity modulator is connected between the laser and the attenuator, so that one-dimensional discrete modulation is realized, and dependence on a phase reference signal is avoided. According to the system, a traditional phase locking module is removed, an asymmetric phase space coding mechanism is adopted, dependence on a phase reference signal is eliminated, and the safety and stability of the system are improved.

The invention provides a BOTDR (Brillouin optical time domain reflectometry) system fusing Stokes-anti-Stokes light and a demodulation method, and belongs to the technical field of Brillouin distributed optical fiber sensing. The narrow linewidth laser is used for generating continuous optical signals; the input end of the coupler is connected with the laser, and the output end is connected with the pulse light branch and the local oscillator light branch. The pulsed light branch comprises a semiconductor optical amplifier, a random scrambler, a first erbium-doped optical fiber amplifier and a circulator which are connected in sequence; the local oscillator light branch comprises an electro-optical modulator, and the electro-optical modulator regulates and controls sideband frequency through a microwave module; the second erbium-doped optical fiber amplifier is used for extracting the Stokes light and the anti-Stokes light; the single-mode coupler mixes the double-sideband local oscillator light with the anti-Stokes light and the Stokes light; and the electrical beat frequency signals are acquired, filtered and enveloped and demodulated through an acquisition card. The detection capability of the Brillouin scattering signal is enhanced, the system structure is simplified, and the hardware cost and the maintenance difficulty are reduced.

The invention discloses a cross-domain attention modeling method and system based on multi-mode remote sensing data fusion, and relates to the technical field of remote sensing, and the method comprises the steps: obtaining night light intensity data and polarization reflection phase difference data of a target region, and according to a continuous light spot region exceeding a preset brightness threshold value in the night light intensity data, carrying out the polarization reflection phase difference data; generating an initial mask of the photovoltaic facility, performing phase feature verification on the initial mask based on the polarization reflection phase difference data, generating a precise positioning mask of the photovoltaic facility, extracting vegetation index time sequence data of a coverage area of the precise positioning mask, matching the vegetation index time sequence data with a preset photovoltaic interference waveform library, and identifying interfered pixels; the method has the beneficial effects that the interference of photovoltaic electric field construction on vegetation index data in desert boundary monitoring can be eliminated, so that the real migration rate of the vegetation-desert boundary can be more accurately determined, and reliable data support is provided for desert ecological environment change monitoring.

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.

The invention discloses a puncture needle track prediction method, system and device and a medium. The method comprises the following steps: acquiring continuous photoacoustic imaging image data when a puncture needle punctures in tissue; processing the photoacoustic imaging image data, extracting a needle point position, and converting each frame of image data into a feature vector about the needle point position; a Transformer model is established, the input quantity of the model is the feature vector of past image data about the position of the needle tip and priori knowledge, and the output quantity of the model is the center coordinate of the needle tip of future image data and the insertion angle of the needle tip in the surrounding tissue. Through data enhancement and constraint injection, a pure data driven model can fuse physical laws and clinical experience, finally real-time and accurate prediction of the motion trail of the puncture needle is achieved, medical employees can be helped to more accurately control the path of the puncture needle in a complex operation environment, the misoperation risk is reduced, and the operation efficiency is improved. And the safety and the accuracy of medical puncture operation are obviously improved.

The invention relates to the field of optical fiber sensing detection, and discloses a forward transmission distributed optical fiber sensing detection method and system based on chirp modulation, a terminal and a storage medium, and the method comprises the steps: obtaining a sensing detection task of a sensing optical fiber, obtaining a single-frequency continuous optical signal and a radio frequency signal according to the sensing detection task, performing chirp modulation on the single-frequency continuous optical signal according to the radio frequency signal to obtain a plurality of modulated optical signals; superposing all the modulated light signals to obtain a sweep-frequency light field, and dividing the sweep-frequency light field to obtain a sensing light field and a reference light field; performing interference processing on a target sensing light field output by the sensing optical fiber and the reference light field to obtain beat frequency interference light intensity, and performing filtering to obtain a target beat frequency interference signal; and performing demodulation processing on the target beat frequency interference signal to obtain a light field phase change, and performing vibration positioning on the sensing optical fiber to obtain an optical fiber vibration position so as to obtain a sensing detection result. According to the invention, not only is the detection cost reduced, but also the vibration on the sensing optical fiber can be accurately positioned.

The embodiment of the invention relates to the field of photomasks, and provides a photomask protective film frame and a preparation method thereof, the photomask protective film frame comprises a frame main body made of a metal material and a coating formed on the surface of the frame main body, and the photomask protective film frame is characterized in that the coating is at least composed of carbon black, silicon dioxide particles and organic dye. The nanoscale carbon black in the coating has a high light absorption coefficient, fills gaps of dye molecules and forms a continuous light absorption network, the organic dye enhances absorption of light with specific wavelength through a molecular structure conjugated system, and the nanoscale carbon black and the organic dye form a composite function of broad-spectrum absorption and accurate waveband adjustment, so that more than 95% of light is absorbed in a broad-waveband range, light reflection on the surface of the frame is reduced, and the light absorption efficiency is improved. Pattern distortion caused by reflected light in the photoetching process is avoided, silicon dioxide is embedded into an organic dye matrix, silicon dioxide gaps are filled with carbon black particles, the porosity of the coating is reduced, the wear resistance of the coating is improved, and the cracking risk of the coating is reduced. Optical absorption, wear resistance and weather resistance are synchronously improved.

The invention provides a biological method for synergistically immobilizing methane and carbon dioxide, which comprises the following steps: mixing activated sludge with microalgae, continuously introducing gas, and forming an algal-bacterial symbiont under the condition of continuous illumination; the method comprises the following steps: putting the algal-bacterial symbiont into a reactor, pumping sewage, introducing gas, and carrying out periodic operation according to a water feeding-aeration-precipitation-drainage mode; wherein the gas comprises methane and carbon dioxide, and the sewage comprises a carbon source, a nitrogen source and a phosphorus source. According to the method, the bacteria-algae particles can be obtained through culture, and the bacteria-algae particles can provide electrons for denitrification by using the soluble methane as an electron donor, so that the purposes of synchronously removing the soluble methane and denitrifying are achieved, and the denitrification process is optimized. The bacteria-algae particles can also realize fixation of methane and carbon dioxide, the sewage treatment process is optimized, and the problems that soluble methane is difficult to remove and carbon emission is high in the existing sewage treatment process are solved.

The invention discloses a method for representing the detection efficiency of a sine-gated single-photon detector by using continuous light. The method comprises the following steps: collecting count values of the single-photon detector under different bias voltages; calculating an initial gate width, an initial average photon number and initial detection efficiency according to the initial over-bias voltage; increasing the bias voltage by a step value, calculating widths of different parts of gate pulse detection efficiency under the voltage, and calculating count values of the different parts; subtracting the count value measured under the bias voltage from the sum of the count values of all the parts to obtain a corrected count value, and calculating the detection efficiency; whether the bias voltage reaches a set maximum value or not is judged, if not, the bias voltage continues to be increased, and meanwhile the detection efficiency is corrected; and if the maximum value is reached, the detection efficiency obtained through processing is used as a final calibration value. The method can correct the detection efficiency when a continuous light source is used, and eliminates the influence of a plurality of voltage intervals, so as to calibrate the maximum detection efficiency of the detector.

The utility model relates to the technical field of optical fiber communication, and discloses a polarization equalization transmitting assembly based on a coherent light silicon optical chip, which adopts a second optical splitter with an adjustable splitting ratio to split input continuous light and equalizes output light power of two paths of coherent light of X polarized light and Y polarized light. The two paths of coherent light of X polarized light and Y polarized light can be pre-adjusted only by adjusting the splitting ratio of the second optical splitter, optical power balance is achieved, high-speed electro-optical modulators in the two paths of coherent light do not need to be adjusted, the high-speed electro-optical modulators can be kept in the optimal state, an adjustable optical attenuator does not need to be additionally arranged in the two paths of coherent light, and the optical power balance is achieved. The utility model has the effects of improving the output power of the transmitting assembly, reducing the self power consumption of the transmitting assembly and improving the utilization efficiency of the high-speed photoelectric driver, and is more suitable for a small-sized packaged coherent optical module based on a coherent optical silicon optical chip.

The invention belongs to the technical field of optical measurement, and relates to a planar dispersion lens, a spectrum confocal measurement system and a morphology measurement method. The planar dispersion lens comprises a substrate and a planar lens group. The planar lens group comprises N layers of planar super-oscillation cylindrical lenses which are stacked in the direction from the position close to the substrate to the position away from the substrate. When the broadband continuous light source vertically enters from the surface of one side, far away from the plane lens group, of the substrate, the N layers of plane super-oscillation cylindrical lenses are used for dispersing light in different wave band ranges in the broadband continuous light source respectively, and a plurality of super-resolution light sheets which are dispersed in the axial direction are generated; wherein N is greater than or equal to 2. When a light sheet generated by the planar dispersion lens designed in the scheme serves as a super-resolution sheet light source to perform spectrum confocal measurement on a sample, the inherent contradiction between an optical field of view and resolution can be effectively broken through, and the spectrum confocal measurement precision can be effectively improved by applying the light sheet to a spectrum confocal measurement system.

The invention provides a laser holographic anti-counterfeiting film makeup method for optimizing seam precision, which comprises the following steps: acquiring light wave phase distribution data of a seam area through a preset optical simulation model, and calculating light wave phase difference of adjacent holographic image edges by adopting a fast Fourier transform algorithm to obtain spatial distribution coordinates of phase discontinuous points; extracting optical characteristic parameters of a seam area from the optimized phase distribution data, and simulating a propagation path of light waves in the seam area by adopting a finite element analysis method to obtain boundary conditions of smooth transition of the light waves; and manufacturing parameters of a seam area are extracted from the final microstructure template data, a holographic pattern of the seam area is generated through light wave phase modulation and pixel dot matrix density control by adopting a laser direct writing technology, and the holographic anti-counterfeiting film makeup with optical fracture suppression is obtained. By accurately controlling phase distribution and bright spot design of the seam area, continuous transition of light waves and visual seamless connection are achieved.

The invention provides a turbidity meter high-precision detection method based on light scattering and absorption spectrum fusion, relates to the technical field of turbidity meter detection, and aims to solve the problems that complex pretreatment operation is needed, time is consumed, and a large number of chemical reagents are consumed in a traditional method. The method comprises the following steps: S1, firstly, carrying out light scattering detection: measuring light scattering intensity by a turbidity detector and detecting the turbidity of a water sample to be detected according to the intensity; s2, absorption spectrum detection: measuring the absorption spectrum intensity of the water sample to be detected by a turbidity detector, and detecting the turbidity of the water sample to be detected according to the intensity; respectively measuring the absorbance of the water sample to be detected and the measured value when the water sample to be detected does not exist by adopting a continuous light source and a white board; detecting the turbidity of the water sample to be detected according to the detection absorption spectrum intensity; the absorbance of the detected water sample is a measured value when the detected water sample exists, and the absorbance of the white board is a measured value when the detected water sample does not exist. The system can well adapt to severe environments of water environment monitoring and drinking water detection, can effectively guarantee the reliability of water quality monitoring, and is beneficial to water quality improvement.

The invention relates to the technical field of film laminating systems, in particular to a laminating system and method for an OCA flexible film, the system is used for laminating the OCA flexible film on a laminated product, the system comprises a dust-free cabin, a film tearing module, a material suction module, a positioning module and a laminating module, the system further comprises a control module in signal connection with the visual positioning unit. A plurality of fitting subunits form a fitting surface, the lower end surfaces of all the subunits are dynamically spliced into a continuous curved surface during movement, a swing phase is adjusted to form a wavy progressive path, and more specifically, starting from a fitting center, each subunit is sequentially lifted and pressed to form an action sequence similar to continuous slight touch of a fingertip; in the process, the laminating pressure is transmitted in a stepped mode in the radius direction, the risk that a traditional steel wheel scrapes the diaphragm is avoided through segmented flexible contact, and the problem that edge bubbles are likely to be generated when a laminating system in the prior art is used for laminating the OCA flexible diaphragm is solved.

The invention discloses an electronic brake system of a fishing reel, and belongs to the technical field of fishing gears. The system comprises a side cover, an adjusting drive plate, a brake adjusting execution assembly, a supporting cover plate, a coil base, an electric control board and a wire cup assembly, wherein the electric control board integrates an optical detection module, a conductive detection module and a control unit; a stop block of the brake adjusting execution assembly and an adjusting drive plate move synchronously, a conducting circuit and a conducting contact can be selectively conducted through a conducting layer on the bottom face of the brake adjusting execution assembly, discrete electric signals identifying gears are output, meanwhile, the shielding degree of the stop block on an optical path of the optical detection module changes continuously, and continuous light sensation analog signals are formed. And the control unit locks the gear according to the discrete electric signal, and responds to the light sensation analog signal to realize stepless regulation of the braking force in the same gear. The device adopts dual-mode cooperative detection, has the characteristics of no mechanical wear, high precision and strong interference resistance, is compact in structure and controllable in cost, effectively improves the casting stability of the fishing reel and the user experience, and is suitable for various fishing reels with precise brake requirements.

The invention provides a device and method for calibrating the wavelength of a spectrometer, and belongs to the technical field of optics, and the device comprises a light source module which is used for outputting wide-spectrum continuous light; the collimation module is used for outputting collimated light based on the wide-spectrum continuous light; the polarizer is used for generating linearly polarized light based on the collimated light; the rotating platform is used for placing a wave plate; the polarization analyzer is located in the light beam output direction of the wave plate; the focusing module is used for converging the light beams output by the polarization analyzer to the spectrograph; the spectrograph is used for detecting the energy of the input light beam so as to output corresponding optical data; the optical data comprises pixels and light intensity data of the input light beam; and a processor for determining a ratio of maximum response discrete light intensity data to minimum response discrete light intensity data based on the optical data, determining a peak center pixel position based on the ratio, and calibrating the spectrometer wavelength based on the pixel position. According to the invention, the technical problem of low accuracy of the wavelength calibration result of the existing spectrograph wavelength calibration method can be solved.

The invention provides an angular displacement measurement method and system based on diamond quantum sensing, and relates to the field of quantum sensing, and the method comprises the steps: taking a diamond NV color center as a probe, placing the probe in a magnetic field and a static magnetic field which rotate at a constant speed, and carrying out the coaxial rotation with a to-be-measured object, the diamond NV color center of the system is measured by adopting continuous light excitation and microwave radiation based on diamond quantum sensing angular displacement; acquiring a first fluorescence signal emitted by the diamond NV color center at a first moment, and outputting a corresponding first traveling wave signal; acquiring a second fluorescence signal emitted by the diamond NV color center at a second moment, and outputting a corresponding second traveling wave signal; and based on the phase difference between the first traveling wave signal and the second traveling wave signal, determining the angular displacement value of the rotation of the object to be measured of the angular displacement measurement system based on diamond quantum sensing. According to the embodiment of the invention, the diamond NV color center is highly sensitive to the change of the magnetic field, and the measurement precision of angular displacement can be improved.

The invention relates to the field of sun tracking sensing devices, and aims to solve the problems that a light radiation detection system is delayed in response and high in analysis complexity due to indirect calculation or image analysis for obtaining a sunlight radiation angle, and accumulative errors exist under a dynamic illumination condition. According to the solar tracking sensing device and method for realizing dynamic scanning of the light radiation quantity, measurement and direct output of the light radiation quantity and the angle are realized through rotation of the two-axis holder, and the maximum value of the light radiation quantity and the angle value corresponding to the light radiation quantity of a to-be-measured site can be obtained by directly using the device disclosed by the invention at the to-be-measured site; the light radiation quantity and the corresponding angle are directly output, dependence on continuous light intensity distribution is reduced, the problems that dynamic response of a sun tracking device in the prior art is delayed, and the light radiation quantity and the corresponding angle cannot be directly output are solved, and the device can be widely applied to the photovoltaic panel fixing and installing process and a dynamic angle adjusting system of a photovoltaic panel.

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 belongs to the technical field of 3D printing, and particularly relates to a continuous pulse mixed type patterning laser powder bed light path system and method.Laser powder is preheated to be close to a melting point but not molten through set continuous-period light emitting, the preheated laser powder is completely molten through pulse-period light emitting, and in other words, the continuous pulse mixed type patterning laser powder bed light path system and method are obtained; continuous light is only used for preheating powder for a short time, so that the powder is close to a melting point but not molten; then peak energy is rapidly provided through microsecond pulsed light, powder melting is completed instantly, in this way, the effective heating time is shortened, the heat radiation range of heating is controlled, the heating time of a system is far shorter than the heating time of traditional continuous light, melting and solidification are completed when heat is not diffused out of a preset pattern in time, and the production efficiency is greatly improved. Therefore, the fusion area is limited within the pattern range, the subsequent part forming precision is improved, and laser loss caused by too high peak power due to short time is reduced through pulse light emitting and continuous light emitting.

A spectral linewidth adjusting method includes: adjusting a timing of a first trigger signal for amplifying and converting a portion of a first pulse laser beam to a second pulse laser beam and / or a timing of a second trigger signal for amplifying and converting a portion of second continuous light to a third pulse laser beam and adjusting a spectrum of a fourth pulse laser beam obtained by performing sum-frequency mixing of the second and third pulse laser beams to a first spectrum in a non-Gaussian shape; and modulating a wavelength of the second continuous light within time corresponding to one pulse of the third pulse laser beam and adjusting the spectrum of the fourth pulse laser beam to a second spectrum having a spectral linewidth wider than the first spectrum through generation of a modulation signal for supplying the modulation signal to an optical phase modulator.

The invention relates to a nanosecond fiber laser and method for high-order chaotic pulses. A fiber ring cavity of the laser comprises a wavelength division multiplexer, an erbium-doped fiber, a first polarization controller, an analyzer, a second polarization controller, an output coupler, a dispersion control unit, a fiber isolator and a band-pass filter which are connected in sequence. The method comprises the steps that pumping continuous light is coupled into the laser through the wavelength division multiplexer; pumping continuous light is absorbed by using an erbium-doped optical fiber and is stimulated to radiate a long-wave-band gain pulse; under the combined action of the first polarization controller, the polarization analyzer and the second polarization controller, an equivalent saturable absorption effect is generated by utilizing nonlinear polarization rotation generated when gain pulses are propagated in an optical fiber, and large anomalous dispersion is introduced to realize generation of nanosecond pulses; through the band-pass filter, nanosecond pulses are allowed to be generated, and meanwhile, the nonlinear increasing speed of propagation and accumulation of the nanosecond pulses in the cavity is controlled, so that order-by-order generation of high-order chaotic pulses is realized. According to the invention, reliable output of high-order chaotic pulses can be realized.

The invention discloses a continuous light intensity detection device for an LED indoor lamp, and relates to the technical field of lamp light intensity detection.The continuous light intensity detection device comprises a main body support, a driving module is installed above the main body support, a multi-dimensional limiting mechanism is arranged above the main body support, and the multi-dimensional limiting mechanism is used for guaranteeing the stability of a lamp main body during detection; by introducing the connecting rod group, the device adopts an asymmetric multi-dimensional clamping mode, and through connection and layout of the connecting rod group, stable constraining force can be applied to the lamp from multiple directions, so that supporting force is provided for the axial direction and other inclined directions of the lamp; the multi-dimensional clamping assembly can disperse gravity from multiple angles, the lamp is prevented from sinking or inclining due to the gravity, when the lamp generates inertia force in the rotating process, the clamping assembly can resist the inertia force from different directions, it is ensured that the lamp is always kept at the set position in the rotating process, and shaking or displacement cannot occur.

A light source includes a mode-locked laser; a beam splitter that branches the femtosecond optical pulse train; a CW solid-state laser; a first beam combiner that outputs one side of the femtosecond optical pulse train on the same axis; a secondary nonlinear optical element that outputs a difference frequency generation and conversion optical pulse train from either a continuous wave or a femtosecond optical pulse train; an amplifier that amplifies the difference frequency generation and conversion optical pulse train; a polarization-maintaining all normal dispersion high nonlinear fiber that converts the other femtosecond optical pulse train into a supercontinuum optical pulse train; a first dispersion medium that converts the supercontinuum optical pulse train into a pulse width that is approximately the same as the difference frequency generation and conversion optical pulse train; and a second beam combiner that multiplexes and outputs the difference frequency generation and conversion optical pulse train and the supercontinuum optical pulse train.

The invention relates to the field of microcavity photonics and the technical field of control, and provides a temperature locking method and device based on an optical microcavity absorption peak position, and the method comprises the steps: employing a tunable laser to output continuous light, and obtaining a transmission spectrum power curve; manually adjusting the output wavelength of the tunable laser, and recording the wavelength interval as a rough absorption peak position when a wave band with significantly reduced transmission spectrum power is detected; automatically adjusting the output wavelength of the tunable laser, and continuously scanning in the rough wavelength interval of the absorption peak position to obtain the absorption peak position; the offset between the position of the absorption peak and the position of a target absorption peak of the optical microcavity in a natural room temperature state is calculated, and the detected position of the absorption peak is stably maintained at the position of the target absorption peak by automatically heating or refrigerating the optical microcavity. Through the method, the problems of heat conduction path delay and thermal field gradient between the microcavity and the sensor are avoided, and the response speed and precision of wavelength drift compensation are improved.

The invention belongs to the technical field of laser radars, and discloses a laser generation device and method of an iron resonance fluorescence Doppler laser radar. The first seed source and the second seed source respectively output continuous light; after the first laser processor carries out power amplification, frequency multiplication, frequency stabilization and frequency beating on the continuous light, the central wavelength of the continuous light is adjusted in real time; the second laser processor performs beam combination and beat frequency on the continuous light adjusted by the first seed source and the continuous light emitted by the second seed source, locks the phase of a difference frequency signal on an external radio frequency signal, and controls the radio frequency signal to circularly jump in a certain interval; and the pulse laser performs amplification and nonlinear frequency conversion on the continuous light emitted by the locked second seed source, outputs single-frequency stable-frequency narrow-band pulse laser, and realizes time-sharing frequency hopping output of the pulse light among three frequencies at the same time. The laser generating device provides a reliable light source for high-precision detection of the atmospheric temperature, the wind field and the iron atom number density of the area from the top of the middle layer to the bottom of the thermal layer.

The present invention discloses a device for generating an ultraviolet supercontinuum light source based on a subwavelength optical fiber, comprising: a pump light source, a first optical fiber coupler, and a subwavelength optical fiber sequentially arranged on the same optical path; the subwavelength optical fiber outputs an ultraviolet supercontinuum. The present invention also discloses a method for generating an ultraviolet supercontinuum light source based on a subwavelength optical fiber, comprising: emitting an optical pulse with a non-chirped sech-shaped waveform, a central wavelength of 400 nm, an initial pulse width ranging from 250 to 450 fs, and a pulse peak power of kilowatt level through a pump light source; the optical pulse is incident on the subwavelength optical fiber through the first optical fiber coupler for dispersion and nonlinear effects, and the subwavelength optical fiber outputs an ultraviolet supercontinuum. The present invention can generate an ultraviolet supercontinuum light source, solving the technical problem that it is difficult to extend the supercontinuum to the short wavelength band.

The invention relates to the technical field of continuous light dydrocarbon, in particular to a dynamic configuration device and method for a continuous light dydrocarbon standard sample. Comprising a device main body, a driving unit, a sample feeding assembly and a sample discharging assembly, the device main body comprises a constant temperature layer and a sample preparation bin which are arranged from outside to inside, the sample preparation bin comprises a first bin body and a second bin body, and the opposite ends of the first bin body and the second bin body are respectively connected with a driving unit; according to the device, automatic operation of the whole process can be achieved, and manual intervention intensity and operation errors are greatly reduced; the standard sample concentration output by the device is accurate, stable and good in repeatability, system errors caused by standard sample concentration deviation of the light hydrocarbon instrument can be effectively inhibited, errors of hydrocarbon component content detection are controlled within a low range, the reliability of oil-gas-water layer recognition and evaluation results is remarkably improved, solid data support is provided for oil exploration and development, and the method is suitable for popularization and application. And the exploration decision risk is reduced.