616 results about "Optical frequency comb" patented technology

Embodiments of the present disclosure relate to the field of acoustic sensing demodulation with high signal-to-noise ratio, real-time demodulation, and high sensitivity, and in particular, to a parallel sensing and demodulation system for acoustic waves based on dual optical frequency combs. The present disclosure introduces dual optical frequency combs as multi-path parallel input light sources, leveraging features of the dual optical frequency combs including narrow linewidth, stable power, high sensitivity, and the capability of precisely converting signals from the optical domain to the radio frequency domain, so the dual optical frequency combs can be used as multi-channel parallel input light sources for acoustic array detection. Besides, some embodiments of the present disclosure employ three-wavelength adaptive demodulation technology to ensure that the detection of acoustic wave signals at every moment has a high signal-to-noise ratio and improved sensitivity for detecting weak signals.

The invention discloses an optical frequency comb generation method and device based on Brillouin scattering and an electro-optical modulator, and belongs to the field of photoelectric measurement. The method comprises the steps that a first laser and a second laser are used for generating pump light and seed light respectively, multi-wavelength pump light is generated through a cascade electro-optical modulator, the pump light and the seed light are emitted into a Sagnac loop, an optical frequency comb is output through the forward Brillouin scattering effect of an optical fiber and the electro-optical modulator, and the seed light and the pump light are output. The polarization controller is adjusted to optimize polarization state matching of the pump light and the seed light, so that the Brillouin scattering effect reaches the maximum value. The device is composed of a laser, an electro-optical modulator, a signal generator, an optical amplifier, an optical isolator, an optical coupler, a polarization controller and an optical fiber. The optical fiber forward Brillouin scattering effect and the electro-optical modulator are combined, the optical frequency comb giving consideration to the wide frequency spectrum and the narrow interval is generated, meanwhile, the comb tooth interval of the optical frequency comb can be accurately controlled by independently adjusting the frequency of the signal generator, and accurate measurement of signals or objects is achieved.

The invention discloses an optical frequency comb repetition frequency locking device and method based on automatic power control, and relates to the technical field of optical frequency combs, the device comprises an optical frequency comb optical system, an optical fiber length automatic control system and an automatic power control system, the optical frequency comb optical system is used for generating optical frequency comb repetition frequency, the optical fiber length automatic control system locks the optical frequency comb repetition frequency output by the optical frequency comb optical system, and the automatic power control system is used for adaptively adjusting the signal power in a corresponding link when the optical frequency comb optical power or the reference source power changes. The input power of the mixer local oscillator and the radio frequency port is maintained at the preset power; according to the technical scheme of the invention, the stability and accuracy of the input power of the radio frequency and local oscillation port of the mixer are improved, the suppression of noise in a link is enhanced, a phase-locked loop of an optical fiber length automatic control system can be maintained in an optimal working state for a long time, and the practicability of an optical frequency comb product is improved.

The invention discloses a double-comb non-cooperative target ranging system based on single photon detection, which is characterized in that an optical pulse output by a first optical frequency comb is divided into two paths of light through a first beam splitter, the first path of light is combined with one of two paths of light divided by a second optical frequency comb through a second beam splitter, and the combined light is transmitted to a first nonlinear frequency up-conversion module; a sum frequency light pulse in the wave band of 780 nm is generated and detected by a base avalanche diode photoelectric detector, and then a time-dependent single photon counter is triggered to start counting; the second path of light is output to a beam expanding collimator through the circulator and irradiates a target to be measured through spatial propagation, the beam expanding collimator collects diffuse reflection light and returns the diffuse reflection light to a third port of the circulator along the original path, and the diffuse reflection light and the other path of light split by the second optical frequency comb through the second beam splitter are combined and transmitted to a second nonlinear frequency up-conversion module; the up-conversion light after sum frequency conversion passes through the optical filter group and then is recorded by a stop end of the single photon counting module, multi-cycle accumulative statistics is carried out by the time correlation single photon counter, and finally a photon counting waveform is reconstructed and the flight time difference of the to-be-measured target is calculated by the computer.

The invention relates to an integrated microcavity optical comb repetition frequency and optical frequency locking device and method, and belongs to the technical field of integrated microcavity optical combs. The locking device comprises a pumping module, a power amplification module, a phase modulation module, an electro-optic driving module, an acousto-optic modulation module, an acousto-optic driving module, a band-pass filtering module, a micro-ring resonant cavity and a beam splitting module; the device comprises a soliton detection module, a control module, a repetition frequency detection module, a first feedback control module, an acetylene frequency stabilized laser, a beat frequency module, an optical frequency beat frequency detection module and a second feedback control module. The locking device can achieve full frequency locking of the microcavity optical comb, has the advantages of being high in frequency stability, wide in servo bandwidth, simple and compact in structure, tight in locking, low in noise, high in reliability and low in cost, and can provide a powerful tool for the field of precision measurement.

The invention relates to the technical field of laser ranging, in particular to a double-optical-comb hybrid ranging device which comprises a signal detection optical path system and a signal demodulation optical path system. Wherein the signal detection optical path system comprises a first optical frequency comb, a first optical isolator, a first optical collimator, a first beam splitter prism, a reference mirror, a Faraday rotator, a convergence mirror and a target reflector; the signal demodulation optical path system comprises a second optical frequency comb, a second optical isolator, a second optical collimator, a half-wave plate, a second beam splitter prism, a third beam splitter prism, a first polarization controller, a first photoelectric detector, a reflector, a polarization beam splitter prism, a second polarization controller and a second photoelectric detector. A third polarization controller; and a third photoelectric detector. According to the invention, three ranging technologies of asynchronous optical sampling ranging, multi-heterodyne interference ranging and synthetic wavelength ranging are fused, and the problem that a large ranging range and high ranging precision cannot be simultaneously considered in the ranging process is solved.

The invention relates to the technical field of crack detection, in particular to an intelligent detection system for house outer wall cracks, which comprises an optical frequency comb scanning module, a polarized light scattering analysis module, a holographic imaging refining module and a data integration and alarm module. According to the invention, the optical pulse emitted by the laser source is accurately controlled, high-precision scanning is carried out on the outer wall of the house, and the data acquisition precision is optimized, so that the spatial position information is captured more accurately, and the roughness and structure change information of the crack surface is extracted according to the polarization state change of the light through the measurement of the polarized light. The three-dimensional form of the crack is recovered by utilizing a holographic imaging technology, a detailed three-dimensional view of the crack is provided, and the crack change can be monitored in real time through comprehensive processing of data and setting of a warning threshold, so that the response speed and the processing efficiency of crack monitoring are remarkably improved, and the human intervention requirement is reduced; and the capability of preventing and dealing with crack propagation is improved.

The invention provides a laser interference measurement precision traceability system and method. The system comprises an atomic clock, a femtosecond optical frequency comb, a spectrum spreading and frequency doubling module, a beat frequency module and a traceability processing module. The repetition frequency of a spectrum output by a femtosecond optical frequency comb and the frequency reference of an atomic clock are locked, frequency beating is carried out on a femtosecond laser spectrum and an interference measurement light source through spectrum broadening, optical frequency doubling and frequency beating detection, and traceability comparison is carried out on an obtained frequency beating signal and laser interference measurement data. The measurement precision of the to-be-measured laser interferometer is traced to the atomic clock frequency reference, and the traceability of laser interference measurement data is realized. Compared with the prior art, the laser interference measurement precision traceability system measures the wavelength by using the atomic clock frequency reference, has higher precision and resolution, and can realize on-site traceability of laser interference measurement data precision. And through precision traceability, the precision and stability of laser interference measurement are also improved.

The invention provides a debugging method for a fast optical fiber delay line, which comprises the following steps of: searching a driving shaft of a translation platform of a positioning motor as a main optical axis, converting the main optical axis by using a theodolite and a visible light laser, then adjusting two optical fiber collimating mirrors to enable the optical axes of the two optical fiber collimating mirrors to be parallel to the main optical axis, and adjusting the positions of two movable pyramid reflectors to realize debugging of the fast optical fiber delay line. It is ensured that the visible laser thin beam can sequentially pass through the reflectors and finally be emitted out of the other optical fiber collimating mirror. And finally, the optical fiber collimating mirror is finely adjusted to maximize the coupling efficiency average value of the optical fiber delay line and minimize the change rate of the optical fiber delay line, so that the coupling efficiency change of the optical fiber delay line is effectively controlled in the moving process of the translation stage, and the measurement precision of the terahertz time-domain spectrometer and the optical frequency comb is ensured.

The invention discloses a full-locking integrated microcavity optical comb based on coherent population trapping spectral lines, and belongs to the technical field of integrated microcavity optical combs. The full-locking integrated micro-cavity optical comb comprises a laser generation module, a frequency reference subsystem and a micro-cavity optical comb system. The laser generation module is used for generating two paths of laser, the frequency reference subsystem modulates one path of laser, a modulated optical signal is emitted into the atomic gas chamber system, and after transmission light is demodulated and subjected to phase-locked amplification processing, an optical frequency signal and a microwave signal which are locked to an atomic spectral line are obtained; and the optical frequency signal is fed back to the laser generating module to realize optical frequency locking. And the microcavity optical comb system adopts a microwave signal generated by the frequency reference subsystem as a frequency reference, and modulates the other path of laser to serve as pump light to enter the optical microcavity, so that optical comb output of a soliton state in the optical microcavity is realized. According to the invention, a single quantum system is taken as a reference, the problem of full locking of the micro-cavity optical frequency comb is effectively solved, and the system integration degree is relatively high.

The invention provides a detection system of a micro optical fiber coupler based on a bidirectional optical frequency comb vernier effect, which can be applied to the technical field of photoelectric detection. The system comprises: an optical frequency comb light source configured to emit detection light; the beam splitter is arranged to split the detection light into first sub-detection light and second sub-detection light; the reference sensing unit is arranged to guide the first sub detection light to interact with a reference solution through an evanescent field of the first micro optical fiber coupler so as to output first transmission light; the detection sensing unit is arranged to guide the second sub detection light to interact with the solution to be detected through an evanescent field of the second micro optical fiber coupler so as to output second transmission light; the beam combiner is set to combine the first transmission light and the second transmission light to obtain a combined light spectrum; the spectrum analyzer is set to collect the combined light and generate a vernier spectrum; and the processor is set to determine the concentration of the liquid to be detected according to the vernier spectrum.

The invention discloses an on-chip time-frequency transmission system and method based on an octave optical comb and an electro-optical modulation optical comb, and the method comprises the steps: constructing a chip-based optical reference cavity through the technologies of vacuum optical cement, photoresist backflow and the like, and achieving an on-chip ultra-stable laser through a phase modulator and a reflection separation optical path; an on-chip laser source pumping micro-ring resonant cavity is utilized to generate an octave optical frequency comb, frequency multiplication is carried out on the on-chip laser source pumping micro-ring resonant cavity and an additional laser source to realize detection and locking of carrier envelope offset frequency (fceo), frequency beating is carried out on the on-chip laser source pumping micro-ring resonant cavity and the on-chip ultra-stable laser device to realize frequency beating (fbeam) locking, and the laser source is utilized to generate an electro-optical modulation optical frequency comb through a circulating phase modulator to realize frequency beating and locking of the on-chip ultra-stable laser device. And the optical time frequency is locked with the locked octave optical comb, is sent to a far end after polarization control and light amplification, and simultaneously receives an electro-optical modulation optical comb at the far end and performs linear light sampling, so that the transmission of the optical time frequency is realized. The optical fiber or space optical link time-frequency transmission device can realize optical fiber or space optical link time-frequency transmission, and has the advantages of low overall noise, high transmission precision, compact structure, small size, low power consumption and the like.

Disclosed herein is an optical frequency comb generator for a distributed acoustic anomaly detection system. The system can include a continuous wave frequency modulated laser source configured to generate a laser signal. The system can include an acousto-optical modulator configured to modulate the laser signal by altering an amplitude and / or frequency of the laser signal based on an RF drive signal applied to the AOM, and to output an optical pulse with multiple frequency sidebands based on the modulation. The output can form an optical frequency comb usable detecting and locating acoustic anomalies within a structure under observation.

The invention provides a multi-wavelength frequency comb laser working point screening method. The method comprises the following steps: S1, setting a starting current, a current interval, a termination current, a starting voltage, a voltage interval and a termination voltage according to threshold current performance parameters and use requirements of a to-be-screened multi-wavelength frequency comb laser; and S2, according to the initial current, the current interval, the termination current, the initial voltage, the voltage interval and the termination voltage set in the step S1, controlling a current source and a voltage source to output current and voltage to the multi-wavelength frequency comb laser to be screened for multiple times according to the current interval and the voltage interval, acquiring output spectral information of the multi-wavelength frequency comb laser under each current and voltage condition by adopting a spectrograph; s3, automatically analyzing the number of the optical frequency combs in each piece of spectral information through a computer by adopting a preset spectral analysis method, and summarizing the numbers of the optical frequency combs of all the spectral information to make a working point diagram; and S4, current and voltage corresponding to the point with the maximum number of optical frequency combs in the working point diagram are selected as working points.

The invention discloses a method and a system for measuring gravitational potential by a satellite-air-ground optical clock time-frequency comparison system. According to the method for measuring the gravitational potential, an optical clock superior to 110-18 orders of magnitude serves as the basis, a free space time-frequency comparison link based on an optical frequency comb serves as a bridge, the optical clocks among the satellite, the air and the ground are connected, high-precision time-frequency transmission is carried out, a gravity frequency shift signal is accurately extracted through time-frequency comparison of a remote clock, and the gravitational potential is measured. And then the gravity potential difference of the position where the remote clock is located is obtained by using a gravity frequency shift equation, and the gravity potential difference between air and ground or between any ground stations is determined.

According to the optical fiber interference sensor and the application method thereof, an electro-optical frequency comb is introduced to screen out two comb lines to form a photon-assisted millimeter wave light source, interference is carried out in two frequency spectral regions subsequently, common phase fluctuation is counteracted based on inherent phase coherence, and the strict requirement for the line width index of a laser is avoided. Meanwhile, the two acoustic optical modulators connected in parallel are introduced into the reference arm and the interference arm for frequency shift, the problem of co-frequency crosstalk caused by residual zero-order diffraction of the acoustic optical modulators is solved, and the sensing precision is substantially improved.

The invention discloses an ultra-wideband femtosecond optical parametric oscillator capable of being quickly tuned, and relates to the technical field of optical parametric oscillators. The oscillator comprises a frequency doubling device, an optical parametric oscillator resonant cavity device and a dispersion compensation chirp mirror pair module. According to the invention, the original phase matching bandwidth is further broken through by adopting a non-collinear phase matching mode that the transmission included angle between the pump light and the signal light is 2.5 degrees, and rapid wavelength tuning can be realized only by finely tuning the cavity length under the condition that the angle of the nonlinear crystal is not adjusted; the broadband tunable optical parametric oscillator can break through the bottlenecks in the aspects of wavelength tuning range, wavelength tuning speed and the like of the existing near-infrared optical parametric oscillator, and provides a novel light source with larger wavelength tuning range and higher tuning speed for the fields needing broadband tunable light sources, such as spectroscopy, micro-nano processing, optical frequency combs and the like.

An optical comb generator receives light from at least two continuous wave laser sources, produces a different frequency comb from each laser source, and produces an output that it the simultaneous combination of the different frequency combs. The different frequency combs span different frequency bands, but at least partially overlap in frequency with an adjacent comb in a region of overlap. A spectral filter produces a filtered output that has at least one pair of tones from the region of overlap, the pair of tones comprising one tone from each of two adjacent combs. Feedback control based on the filtered output is applied to adjust the light entering the comb generator such that the frequencies and phases of the pair of tones from the region of overlap are aligned. In this way, the multiple different overlapping combs are stitched together to form a single seamless comb spanning a broader frequency range.

A dual optical frequency comb light-emitting device includes a first optical-frequency-comb laser source that includes a first laser resonator having a first optical path length, a second optical-frequency-comb laser source that includes a second laser resonator having a second optical path length different from the first optical path length, and an optical coupler that causes a first portion of first optical-frequency-comb laser light emitted from the first laser resonator to enter the second laser resonator. The first optical-frequency-comb laser source outputs a second portion of the first optical-frequency-comb laser light to an outside. The second optical-frequency-comb laser source outputs second optical-frequency-comb laser light emitted from the second laser resonator to the outside.

The invention belongs to the technical field of optical frequency comb repetition frequency, and discloses an optical frequency comb repetition frequency control system and a locking method, and the system comprises a light source module, a signal detection module, a frequency measurement module, a comparison frequency generation module and a feedback control module. The light source module generates an optical frequency comb; the signal detection module converts the optical signal into an electric signal, noise reduction and amplification processing are carried out through a signal processor, and noise reduction adopts a wavelet transform method; the frequency measurement module adopts a dual measurement mode of a frequency counter and a spectrum analyzer to accurately measure repetition frequency; the comparison frequency generation module provides high-precision reference frequency; and the feedback control module performs closed-loop adjustment according to the difference value between the measurement frequency and the reference frequency. By optimizing signal processing and adopting dual-frequency measurement and closed-loop feedback control, the problems of weak electric signals, large noise interference and low frequency control precision in the prior art are effectively solved, and the stability and accuracy of the repetition frequency of the optical frequency comb are improved.

The invention discloses an optical frequency comb generation device and method based on lithium niobate film waveguide series connection double micro-rings. The device comprises a first bus waveguide, a first annular waveguide, a second annular waveguide and a second bus waveguide which are etched on a lithium niobate film. Wherein one end of the first bus waveguide is a pump light input end, the other end of the first bus waveguide is an auxiliary light input end, the first bus waveguide and the first annular waveguide are mutually coupled, the first annular waveguide and the second annular waveguide are mutually coupled, the second annular waveguide is a soliton cavity, and a temperature regulation and control device is arranged below the soliton cavity. The temperature of the soliton cavity is regulated and controlled to enable the harmonic peak of the soliton cavity to drift, so that the pump light enters a soliton state, the auxiliary light performs power compensation on the soliton state of the pump light, and a soliton optical frequency comb is generated. In combination with auxiliary photo-thermal modulation, the micro-cavity thermal effect is compensated, the soliton stability is improved, and finally a comb-shaped structure spectrum with stable performance, high coherence and high flatness is output from a soliton cavity port.

The invention discloses a DP-MZM-based reconfigurable mixer with phase shift and image rejection functions, and belongs to the field of microwave photon signal processing. By adjusting an input radio frequency signal and a direct current bias voltage of the DP-MZM1, four different LO frequency doubling and mixing functions can be realized. By controlling the angle alpha between the polarization direction of the polarization analyzer and one axis of the modulator, the phase of the generated signal can be flexibly tuned in the range of 0-360 degrees. When combined with the optical frequency comb, the multi-channel multi-band frequency conversion system can be expanded into a multi-channel multi-band frequency conversion system with independent phase tuning capability by utilizing the channel switching and frequency slot selection functions of the wavelength selection switch, and parallel output of various frequency mixing results can be realized. By adjusting the phase difference between the two-channel output signals, I / Q mixing, double-balanced mixing and image rejection mixing can be configured. The scheme is not influenced by direct current bias drift, the system complexity is reduced, and the frequency conversion efficiency is improved.

A photonic-crystal resonator (PhCR) and associated methods of design and manufacture. The PhCR includes spontaneous optical-pulse generation and includes a ring whose geometry is correlated to a mode structure or dispersion of the PhCR while also taking into account a desired type of nonlinear optical output from the PhCR, such as an optical frequency comb, or a particular type of pulse. The PhCR includes a periodic nanopatterning on an inner radial wall of its ring and is able to spontaneously generate a nonlinear optical output. The nanopatterning of the inner radial wall is designed to form a desired output, such as one of a classic soliton pulse that has a sech type temporal profile, or a gaussian profile, or a sink pulse profile.

The invention discloses an optical communication wavelength meter for exciting rubidium atom two-photon transition based on a lithium niobate microcavity optical comb. The optical communication wavelength meter comprises a microcavity optical comb module, a repetition frequency phase-locked loop, an initial frequency phase-locked loop, a rubidium atom gas chamber and a frequency-stabilized light source. The micro-cavity optical comb module is used for generating a fundamental frequency optical comb and a frequency doubling optical comb, rubidium atom two-photon transition is directly excited, the frequency stabilization light source achieves frequency stabilization through rubidium atom saturation absorption, and the repetition frequency phase-locked loop feeds back and adjusts repetition frequency according to error signals of two-photon transition fluorescence intensity. The initial frequency phase-locked loop feeds back and adjusts the initial frequency through beat frequency signals of the frequency multiplication optical comb and the frequency stabilization light source, and the two groups of phase-locked loops stabilize the frequency of the microcavity optical comb to two groups of transition energy levels, so that locking of the repetition frequency and the initial frequency is realized. According to the optical communication wavelength meter based on the lithium niobate microcavity optical comb excitation rubidium atom two-photon transition, the cross modulation effect in a pumping wavelength and pumping power combined adjustment mechanism is avoided, and the size of the optical communication wavelength meter is reduced.

Embodiments utilize an optical frequency comb generator coupled to an optical resonator of an optical gyroscope. The optical frequency comb generator generates an optical frequency comb having frequency peaks that each correspond to a respective resonance frequency of the optical resonator. A control servo can be coupled to the optical frequency comb generator and controls the optical frequency comb output from the optical frequency comb generator. In doing so, the optical frequency comb remains tuned to the resonance frequencies of the optical resonator during gyroscope operation.

An integrated photonics millimeter wave (MMW) radar communication system based on analog phase modulation scheme includes an integrated photonics MMW radar communication signal transmitter, a radar receiver, and a communication receiver. The transmitter includes a radar communication signal analog phase modulation module, an optical frequency comb (OFC) module, an electro-optic modulator (EOM), an optical shaping filter, an optical power divider, a photoelectric detector, an electric power amplifier, and a transmitting antenna that are cascaded sequentially. The radar receiver includes a radar receiving antenna, an electric low-noise amplifier (LNA), an optical phase modulator, an optical bandpass filter (BPF), a low-speed photoelectric detector, an electric low-pass filter, and a low-speed oscilloscope that are cascaded sequentially. In the communication receiver, a communication receiving antenna is sequentially cascaded with an electric LNA, a frequency mixer, and an oscilloscope, and a voltage-controlled oscillator is cascaded with a frequency multiplier and then connected to the frequency mixer.

The invention discloses a distributed MIMO (Multiple Input Multiple Output) integrated system and method based on a reconfigurable notch chaotic optoelectronic oscillator, belongs to the field of microwave photons, and solves the problems of spectrum resource conflict, difficulty in multi-node synchronization, discrete inductance functions and the like. According to the system, a plurality of independent chaotic OEOs are combined with an optical frequency comb to drive an FIR filtering effect, MIMO chaotic signals with reconfigurable notch frequency points and quantity are generated, and dynamic allocation of spectrum resources is realized. The notch frequency band is used as a communication channel embedded modulation signal, and supports multi-spectrum sharing with 2.4 G, 5G, Wi-Fi and the like; a non-notch frequency band is reserved as a radar signal, and the range resolution is improved by using the broadband characteristic of the chaotic waveform. The star topology optical network expands the coverage area of a distributed system, and a centralized processing architecture reduces the complexity of multi-node collaboration. The invention provides an integrated solution of high-precision environment perception and high-reliability communication for smart cities, Internet of Vehicles and the like, and is suitable for dense urban areas with resource shortage and dynamic multi-service environments.

A self-referenced locked optical frequency comb generation system based on thin-film lithium niobate includes: a first pump optical coupler, a first bus waveguide, an active microring, a mode spot converter, an optical amplifier, and a first end face coupler arranged on a rare earth-doped thin-film lithium niobate chip along the propagation direction of the optical signal; a second end face coupler, a wavelength division multiplexer, a dispersion compensation waveguide, a second bus waveguide, a passive microring, and a beam splitter arranged on the thin-film lithium niobate chip along the propagation direction of the optical signal; and a second pump optical coupler, an optical frequency comb output coupler, an optical filter, and a frequency doubling optical output coupler. The present invention realizes the generation of an on-chip self-locked optical frequency comb by using devices such as a mode-locked laser, an optical amplifier, and a high-Q value microring based on thin-film lithium niobate, and has broad application prospects.

The invention provides a time stretching Fourier transform optical frequency comb morphology measurement system and method. The time stretching Fourier transform optical frequency comb morphology measurement system comprises an optical frequency comb OFC, an interferometer module, a dispersion optical fiber module, a signal detection module and a synchronous control module. An optical frequency comb (OFC) provides an incident light beam for the interferometer; the interferometer module obtains an interference signal of the measured object by adjusting the length of the single-mode optical fiber; the dispersion transmission module performs time stretching on the interference signal through a single-mode optical fiber to generate a time domain interference signal; a signal detection module captures the stretched time domain interference signal, and solves the morphology parameters of the measured object through a time-frequency transformation algorithm; the synchronous control module drives the two-dimensional displacement platform bearing the measured object through the motion control card and triggers synchronous acquisition and storage of three-dimensional shape data of the measured object. The method has enough high precision in morphology measurement, and the detection speed of the method can meet the requirements of industrial real-time detection.

The invention discloses a multi-band enhanced infrared optical comb spectrum rare gas detection system in a hollow cavity of building glass, which is characterized in that a line scanning optical frequency comb light source module and a reflective array module jointly form a virtual enhanced cavity to enhance the optical path of an emitted fan-shaped optical comb light beam so as to improve the detection precision; rapid switching of multi-band gas is achieved through an electric filter wheel according to sequential control so as to detect different gases, gas data in a hollow cavity are collected in real time by combining the high-speed collection capacity of a dual-band area array detection module, and a concentration distribution cloud chart of argon and krypton is rapidly constructed based on a data terminal processing module; the detection efficiency and accuracy of the gas in the glass hollow cavity are greatly improved, the synchronous operation of space scanning and wave band switching is realized, and multi-dimensional data of the concentration, the position and the impurity content of multiple gases can be measured and obtained at a time; a polarization filtering function and a temperature field compensation algorithm are integrated, and the detection precision under outdoor strong light and temperature difference environments is ensured.