37 results about "Rubidium atom" patented technology

The invention relates to the technical field of atomic frequency standards, in particular to a rubidium cold atom gas chamber-based two-photon transition optical frequency standard device, which comprises a two-photon transition clock laser system, a rubidium cold atom gas chamber, a cooling laser system, a sputtering ion pump and a rubidium source, wherein the two-photon transition clock laser system comprises a laser generation modulation light path, a laser power stabilization light path and a laser frequency control light path; the rubidium cold atom gas chamber is arranged behind the Glan-Taylor prism; the cooling laser system comprises a cooling laser, a second isolator, a second polarization beam splitter, a pumping light path, a re-pumping light path and a detection light path; the sputtering ion pump is connected with the rubidium cold atom gas chamber; and the rubidium source is connected with the rubidium cold atom gas chamber. The two lasers are utilized to obtain the two-photon transition signal, so that the rubidium atom two-photon transition light frequency standard with high stability is obtained, and the intensity of the two-photon transition fluorescence signal is improved.

This invention discloses a rubidium atomic clock frequency adaptive prediction method and system based on LSTM network, belonging to the field of time and frequency technology. The invention includes the following steps: Step 1. Data acquisition; Step 2. Filtering and denoising preprocessing; Step 3. Normalization processing; Step 4. LSTM model training and deployment; Step 5. Frequency prediction; Step 6. Online model adaptation. This invention employs a Long Short-Term Memory (LSTM) network, a special type of recurrent neural network, which can effectively learn the complex time dependencies and noise patterns in rubidium atomic clock time and frequency data. The inherent gating mechanism of the LSTM model makes it adept at capturing long-term dependencies in time series, thus enabling high-precision prediction of short-term frequency fluctuations. Through an online fine-tuning mechanism, this invention allows the LSTM model to continuously adapt to the individual drift and aging characteristics of a single rubidium atomic clock, achieving precise optimization for each clock and model, significantly improving the practicality and long-term stability of the method.

The invention relates to a reflective two-photon rubidium clock atomic fluorescence collection system. The system comprises a rubidium atom gas chamber, a reflector, an optical filter, a lens and a photoelectric detector. The rubidium atom gas chamber is a reflection cavity with a parabolic cylinder structure, the side plane of the rubidium atom gas chamber is a polling light incident plane and is plated with a color separation film for transmitting polling light and reflecting atomic fluorescence, and the polling light incident point is located at the focal point of the parabolic section; the opposite plane of the parabolic cylinder of the reflection cavity is an atomic fluorescence emergent surface, the inner wall of the parabolic cylinder is plated with an atomic fluorescence reflecting film, rubidium atom steam is contained in the parabolic cylinder, and a preset included angle is formed between the reflector and the atomic fluorescence emergent surface and used for reflecting a light path to enable a fluorescence collection light path and a polling light path to be arranged in parallel and converging emergent atomic fluorescence. The optical filter filters stray light with non-target wavelength, the lens converges atomic fluorescence after light filtering, the photoelectric detector receives the fluorescence and converts the fluorescence into an electric signal, and frequency stabilization control of the laser is achieved. By adopting the system, the space utilization rate, the system signal-to-noise ratio and the fluorescence collection efficiency can be improved.

This invention discloses an optical non-reciprocal information encryption method and apparatus based on a time crystal. The method includes the following steps: S1, providing a three-level atomic system containing rubidium atoms, and setting a probe light and a coupling light, wherein the probe light is incident on the atomic system in a fixed direction; S2, controlling the coupling light to propagate collinearly in the opposite direction to the probe light, causing the atomic system to enter a time crystal state and generate a transmission signal with a stable oscillation frequency; S3, acquiring the oscillation frequency of the transmission signal and encoding the oscillation frequency as key information; S4, placing the atomic system in a non-time crystal state, where the transmission signal does not contain the oscillation frequency, thereby achieving non-reciprocal encryption of the key information. This invention causes the atomic system to enter or leave a time crystal state to generate or suppress a transmission signal with a stable oscillation frequency, and encodes and encrypts the oscillation frequency as key information.

This application provides a rubidium optically pumped magnetometer and its measurement method, belonging to the field of magnetometer technology. The entangled photon component includes a first laser and a nonlinear optical crystal, the nonlinear optical crystal being used to convert photons emitted by the first laser into entangled photon pairs; a rubidium atom gas cell for receiving the entangled photon pairs; a laser cooling system for cooling rubidium atoms to a Bose-Einstein condensate; and an interferometer phase detection system including a second laser, a first beam splitter, a beam combiner, and a signal processor. This application introduces entangled photons to form a quantum entangled state with rubidium atoms. The introduced entangled photons, through coupling with the rubidium atom system, form an enhanced quantum interference effect. Traditional rubidium optically pumped magnetometers are limited in measurement accuracy by quantum noise, but by introducing entangled photons, the system's measurement noise is reduced, thereby achieving higher measurement accuracy.

The small rubidium spectral lamp comprises a bulb and a metal base, the metal base is sleeved with a heating wire, and a glass sleeve installation through hole, a heat conduction channel with the inner diameter gradually reduced and a bulb tail fixing groove are sequentially formed in the metal base in the length direction of the metal base. One end of the glass sleeve is mounted in the glass sleeve mounting through hole, and an oscillating coil is embedded in the inner wall of the glass sleeve; the bulb comprises a bulb body, a conical area and a bulb tail, the conical area and the bulb body are integrally arranged, the bulb tail is located in the bulb tail fixing groove, the conical area is located in the heat conduction channel, the bulb body is wound by the oscillating coil, the two ends of the oscillating coil are electrically connected with the lamp excitation plate, and the lamp excitation plate is fixed to the lamp heat dissipation fixing plate. And the lamp excitation plate is connected with the metal base through a stud and a gap is reserved between the lamp excitation plate and the metal base. The working stability of the spectrum lamp in the vacuum environment can be improved, the temperature coefficient of the spectrum lamp is optimized, the light intensity of the spectrum lamp is stabilized, the size of the spectrum lamp is reduced, the structure is simple, and implementation is easy.

The invention provides a self-excitation type Mx rubidium atom magnetometer device and a working method, the self-excitation type Mx rubidium atom magnetometer device comprises an atom magnetometer probe and an atom magnetometer driving circuit, and the atom magnetometer probe is connected with the atom magnetometer driving circuit; the atom magnetometer probe comprises a VCSEL laser tube, an electro-optical modulator, a 1 / 4 slide, a rubidium atom gas chamber and a photosensitive tube. The atom magnetometer driving circuit comprises a lock-in amplifier, a phase shifter, an EOM driver and a laser tube driver. According to the invention, the atom magnetometer driving circuit synchronously modulates the polarization state and the light intensity of the pumping laser in the rubidium atom magnetometer to form an auto-excitation feedback loop, so that the problem that the radio frequency magnetic field feedback auto-excitation working mode adopted by the traditional Mx magnetometer is not suitable for the rubidium atom magnetometer is solved; and an instable feedback loop is formed.

This application provides a rubidium atomic clock based on a velocity grating spectrum and its implementation method. The method includes: a multi-frequency coherent laser source emitting a laser signal containing a velocity grating spectrum, which is split into two paths by a polarization beam splitter; the reflected beam is injected into a laser frequency stabilization module to achieve laser frequency stabilization; the transmitted beam is injected into a rubidium bulb through a lens group to interact with rubidium atoms; a phototube detects transition spectral lines, converts the transition spectral lines from optical signals to electrical signals, and transmits them to a lock-in amplifier for demodulation; an integral amplification module converts the demodulated DC voltage into a linearly increasing voltage and transmits it to a crystal oscillator; the crystal oscillator generates an initial microwave signal and generates a frequency synthesizer. 87 The microwave signal corresponding to the Rb atom; the phase-frequency modulation module modulates the microwave signal to obtain an error signal, which is then transmitted to the microwave resonant cavity to adjust the electromagnetic field according to the error signal, thereby stabilizing and locking the rubidium atomic clock. This method is used to improve the stability of the rubidium atomic clock system.

According to the rubidium isotope proportion measuring device and method based on the nuclear spin slowing factor, two beams of orthogonal laser are driven through an automatic upper computer, magnetic resonance frequencies of a high-temperature alkali metal air chamber in different bias magnetic fields are searched under different optical powers, the gyromagnetic ratio is calculated through linear fitting, and therefore the nuclear spin slowing factor of an atom ensemble is obtained, and the rubidium isotope proportion measuring method based on the nuclear spin slowing factor is obtained. And solving an overdetermined equation set by using the relationship between the slowdown factor and the isotope proportion and the rubidium atom isotope proportion, thereby realizing accurate measurement of the rubidium atom gas chamber gas isotope proportion. Compared with a conventional method, the device and the method have the advantages of accuracy, rapidness, simplicity and lower cost, and the closed air chamber structure does not need to be damaged.

This invention discloses a rubidium atomic clock discipline method and related products based on the fusion of BeiDou and longwave dual-source signals, belonging to the field of high-precision time and frequency synchronization technology. The method of this invention simultaneously measures the first time difference between the rubidium atomic clock and the BeiDou reference time signal, and the second time difference with the longwave reference time signal, fusing the short-term accuracy of BeiDou with the long-term stability of longwave. An extended Kalman filter model is constructed, whose state vector includes a first type of state variable representing the time-frequency characteristics of the rubidium atomic clock and a second type of state variable representing the fused time difference between BeiDou and longwave. The first and second time difference values ​​are used as observation inputs for iterative estimation, synchronously updating the optimal values ​​of the two types of state variables. A frequency adjustment is generated based on the optimal estimate, and closed-loop control is performed on the output frequency of the rubidium atomic clock. This invention can synergistically utilize the advantages of BeiDou and longwave dual-source signals to achieve time synchronization with high instantaneous accuracy and long-term reliability.

The invention discloses a rubidium atomic clock-cavity optical mechanical system photoproduction microwave source carrying a lithium niobate frequency doubling cavity. The rubidium atomic clock-cavity optical mechanical system photoproduction microwave source comprises a tunable laser source, a cavity optical mechanical system, a frequency doubling system, a rubidium atomic clock system and a feedback frequency locking system. According to the invention, a periodically poled lithium niobate waveguide is adopted as a frequency doubling system, frequency doubling processing is carried out on optical signals output by a silicon-based cavity optical mechanical system, a-1550nm wave band laser with a narrow line width and high device maturity is used for replacing a-795nm wave band laser, an optical microcavity with a high quality factor is prepared by a mature process, meanwhile, conditions required by hyperfine splitting of a rubidium atomic clock are met, and the optical microcavity can be applied to hyperfine splitting of a rubidium atomic clock. Compared with an existing mode of exciting an atomic clock through a micro-cavity made of a wide transparent window such as lithium niobate but an immature material in preparation process, the cavity optical mechanical chip processing and preparation precision is improved, the optical resonance Q value of the micro-cavity is improved by adopting a high-refractive-index silicon-based photonic crystal, and the maturity and stability of a system device are improved by adopting a 1550 nm waveband laser; and an efficient and stable photo-generated microwave signal source architecture can be realized.

The application discloses a remote voice conversation listening method based on Rydberg atoms, which comprises the following steps: a probe light, a decoration light and a coupling light are used to cooperatively excite rubidium atoms in a rubidium atom gas chamber to a high Rydberg state, the frequency of the coupling light is scanned, an EIT spectrum is obtained, and an EIT resonance point is acquired; the frequency and power of a local microwave are adjusted, the frequency of the coupling light is scanned, and the EIT spectrum exhibits a critical state of AT splitting; the local microwave K L is used to scan the frequency of the coupling light after being reflected by a to-be-detected target to the rubidium atom gas chamber, an EIT-AT spectrum and a superposition spectrum of a vibration signal K S are acquired; the frequency of the coupling light is locked at the EIT resonance point, and the vibration signal K S is restored; and the vibration signal K S is denoised. The application further discloses a remote voice conversation listening device based on Rydberg atoms, wherein, when the device is used for listening, a vibration signal in a human voice frequency range is detected, and vibrations outside the human voice frequency are shielded. The application has a simple structure and does not need complex demodulation and filtering and amplifying links.

This invention discloses a three-photon atomic spectral line frequency-locking system for a rubidium atom Rydberg microwave field meter, comprising a 780nm laser, a 1260nm laser, a 776nm laser, a saturated absorption spectroscopy detection system, an EIT detection system, an EIA detection system, a saturated absorption spectroscopy frequency-locking system, an EIT frequency-locking system, and an EIA frequency-locking system. This invention uses a three-photon excitation scheme instead of the traditional two-photon excitation scheme, significantly reducing the size of the laser used and ensuring stable output laser frequency and power. This invention employs a frequency-locking method combining SAS, EIT, and EIA spectra, which significantly improves the laser frequency-locking time compared to current PDH frequency-locking methods or laser self-operation frequency-locking methods. This invention uses a three-photon modulation method with a unified common modulation frequency for atomic spectral lines, effectively reducing the complexity of frequency-locking in the three-photon Rydberg system, making the method more widely applicable and practical.

The invention discloses a clock group device integrating two cesium atomic clocks and one rubidium atomic clock, and relates to the technical field of atomic clocks. The device comprises two cesium atomic clocks, a rubidium atomic clock and a control system, and the control system is used for controlling the cesium atomic clocks and at least one rubidium atomic clock to work, so that when the rubidium atomic clock generates short-term and medium-term comprehensive atoms, and when the cesium atomic clock generates long-term atoms. The clock group device integrates the design of double cesium-beam tubes: the two cesium-beam tubes are detected by sharing one set of laser system, so that the space utilization rate is improved, and the cost is reduced; the two cesium-beam tubes are respectively controlled by arranging the double servo systems of the clocks with slight deviation, so that the two cesium atomic clocks do not generate relevance under the condition of sharing laser; the timekeeping system is designed according to the frequency characteristics of the caesium atomic clock length stability and the caesium atomic clock length stability so as to realize the basic functions of the clock group. According to the invention, the clock group function can be realized under the conditions of small size and low cost.

This invention provides a rubidium atomic clock servo control system and method based on FPGA, belonging to the field of atomic frequency standard technology. The system includes a laser driving current modulation module, a microwave radio frequency synthesis module, a photoelectric signal acquisition module, a laser frequency locking module, a microwave frequency locking module, a laser temperature control module, a cavity temperature control module, and a magnetic field control module. This invention adopts FPGA digital integration of VCSEL driving current modulation, high-precision microwave radio frequency signal generation, and digital frequency locking control to replace traditional analog circuits, reduce system complexity and cost, and improve the stability and reliability of the rubidium atomic clock.

The invention discloses an electrical equipment partial discharge measurement system based on Rydberg atoms, and relates to the field of electrical equipment partial discharge detection, the electrical equipment partial discharge measurement system comprises a probe, the probe comprises a gas chamber containing cesium or rubidium atoms, a first dichroscope and a second dichroscope are arranged on the first side face of the gas chamber in an array mode, and a second dichroscope is arranged on the second side face of the gas chamber; the second side face, opposite to the first side face, of the gas cavity is provided with double reflectors. The light modulation module is used for generating adjustment light, coupling light and detection light with different wavelengths; the photoelectric detection module is used for detecting a transmission spectrum signal of the detection light transmitted through the second dichroscope and sequentially carrying out photoelectric conversion, filtering and amplification processing on the transmission spectrum signal so as to obtain microwave electric field information; wherein the light modulation module and the photoelectric detection module are integrated on a PCB (Printed Circuit Board), and the probe is fixed on the PCB. The integrated design is adopted, so that the manufacturing cost and complexity are reduced, and the sensitivity and resolution of the sensor are improved.

The invention relates to a two-photon rubidium clock fluorescence collection system based on a parabolic reflection cavity. The system comprises a rubidium atom gas chamber, a light collecting lens group, an optical filter and a photoelectric detector. The rubidium atom gas chamber is a parabolic reflection cavity with a truncated top end plane, and the truncated top end plane is a rubidium atom polling light entrance port and is plated with a color separation film for transmitting polling light and reflecting atomic fluorescence; the bottom end is an atomic fluorescence exit port and is plated with a color separation film for reflecting polling light and transmitting atomic fluorescence; the inner wall is plated with an atomic fluorescence reflecting film, rubidium atom steam is arranged in the cavity, and the cavity focus is located in a preset action area of the polling light and the rubidium atom steam. A first lens of the light collecting lens group converges atomic fluorescence, an object space focus of a second lens coincides with an image space focus of the first lens, and the converged fluorescence is collimated. The optical filter is used for filtering stray light with non-target wavelength and only allowing atomic fluorescence to penetrate; and the photoelectric detector converts the filtered fluorescence into an electric signal. The system can improve the optical energy utilization rate and the fluorescence collection efficiency.

The application discloses a method for taming a rubidium atomic clock based on a sliding window dynamic compensation and related products, and belongs to the technical field of time-frequency synchronization. The method divides a sampling period into a first time length and a second time length, acquires long-wave-rubidium clock time difference data and constructs a time difference model, calculates the phase difference and the frequency deviation of the rubidium atomic clock by using a least square method, takes the phase difference and the frequency deviation as adjustment amounts when the cycle number is 1, otherwise, takes the change amount of the frequency deviation as an adjustment amount to adjust the rubidium atomic clock, retains the second time length data, acquires the first time length data after adjustment, compensates the data based on the frequency deviation change amount, updates the time difference data after splicing the compensated data and the retained second time length data, and repeatedly executes the taming of the rubidium atomic clock. The method can shorten the taming adjustment period of the rubidium atomic clock while maintaining the advantage that the long-wave timing signal has strong anti-interference capability, and improves the stability of the rubidium atomic clock.

The embodiment of the invention provides a miniature modulation transfer spectrum rubidium atom optical clock based on a light building block structure and an implementation method thereof, and the implementation method comprises the steps: a thumb laser emits narrow linewidth laser, after light spots are expanded through a beam expander, a first half-wave plate and a first polarization splitting prism are matched to adjust the light splitting power, the narrow linewidth laser is divided into two beams, and one beam is used for a laser frequency stabilization light path; one beam used for a laser frequency stabilization light path is divided into two beams with different light intensities by a second half-wave plate and a second polarization splitting prism, and the two beams comprise pump light and probe light; the pump light enters rubidium atoms in the double-layer miniature rubidium atom gas chamber to interact after being subjected to phase modulation by the electro-optical modulator, and the probe light is detected and received by the high-speed photoelectric detector after interacting with the rubidium atoms in the double-layer miniature rubidium atom gas chamber and is converted into an electric signal; the mixer generates an error signal according to the electric signal and the demodulation signal, and the servo feedback control circuit controls the laser driving power supply according to the error signal, thereby achieving the output of high-stability narrow-linewidth laser, and achieving the effect of reducing the overall size.

This invention discloses an ultra-high precision clock synchronization system for power systems based on rubidium atomic clocks, relating to the field of power management technology. It includes a module for connecting the rubidium atomic clock to a synchronization device in the power system, and simultaneously connecting the synchronization device to satellite and ground time sources. A connection channel is established between the synchronization platform and multiple power system clock data acquisition points. When anomalies are detected in multiple dimensions of the synchronization platform, tiered switching execution is performed based on the anomaly. This invention utilizes a connection channel that only requires channel triggering for information transmission. The transmission process is pre-configured at both ends of the channel, requiring only channel triggering, thus saving on data transmission steps. This allows for data acquisition and analysis to approach the effect of synchronization, improving the timeliness of data transmission and enabling more timely feedback on power system clock synchronization anomalies, thereby reducing the impact of clock synchronization anomalies on the power system.

The present application relates to a kind of vibration real-time compensation device and method for cold atom gravimeter, the device includes Raman laser, rubidium atom group, reflector, accelerometer, optical phase-locked loop module, analog-digital converter, reference clock source, heteronuclear FPGA, direct frequency generation module, host computer.Two pairs of Raman laser in vertical direction relative to rubidium atom group, accelerometer and reflector are rigidly connected, the analog differential signal of accelerometer enters analog-digital converter, the digital signal converted enters heteronuclear FPGA and carries out digital calculation, reference clock source is as the clock signal of digital circuit.Signal calculated by heteronuclear FPGA enters direct frequency generation module and is output to the phase of optical phase-locked loop controlled Raman laser, and heteronuclear FPGA and host computer are communicated by TCP connection.The present application is a kind of digital, with large dynamic range, low noise, high-precision phase synchronization compensation capacity of vibration real-time compensation device for cold atom gravimeter.

The invention belongs to the technical field of quantum optics, and particularly relates to a system and method for generating a space compression light array by using Laguerre Gaussian beams, and the system comprises a laser, a first half-wave plate, a first polarization splitting prism, a first beam collector, a second half-wave plate, a second polarization splitting prism, a small reflector, and a spatial light modulator. The system comprises two large reflectors, a third half-wave plate, two third polarization splitting prisms, a second beam collector, a rubidium atom chamber, two quarter-wave plates, two fourth polarization splitting prisms and two balance zero-beat detectors. The first light beam collector and the second light beam collector are arranged on one side of the first polarization beam splitting prism and one side of the third polarization beam splitting prism respectively, the small reflector is arranged on one side of the second polarization beam splitting prism, and the spatial light modulator is in wired connection with the display controller. And the crosstalk problem of the traditional scheme is avoided.

The invention relates to a physical constant traceable atom temperature measuring instrument and method based on fluorescence detection, and the method comprises the steps: a low n-state atom radiation field sensor carries out the reverse coincidence propagation of 780 nm detection light and 776 nm decoration light in a rubidium atom steam pool, and forms electromagnetic induction transparency; according to the Rydberg atomic radiation field sensor, 1263 nm coupling light and decoration light are subjected to coincident propagation in the same direction, and three-photon electromagnetic induction transparency is formed; under the induction of black-body radiation, atoms jump to adjacent energy levels and generate fluorescence; the spectral density characteristics of blackbody radiation in a plurality of characteristic wavebands are synchronously extracted to a unified quantum sensing platform through common fluorescence detection of an atom with a high main quantum number and an atom with a low main quantum number. And fitting the absolute temperature of the object directly according to the Planck black body radiation law through the acquired wide-spectrum radiation spectrum density data. The method does not depend on external calibration, and can effectively suppress high-precision absolute temperature measurement influenced by surface emissivity.

The application discloses a Raman laser system for a rubidium 85 atom interferometer, a single-frequency laser obtains +1 order diffraction light and -1 order diffraction light through a seed light path, the +1 order diffraction light and the -1 order diffraction light are input into corresponding single +1 order light power amplifiers and -1 order light power amplifiers respectively, the obtained +1 order Raman light and -1 order Raman light are input into a beam combining / splitting light path through corresponding single-mode polarization maintaining optical fibers, the beam combining / splitting light path performs beam combining and splitting on the +1 order diffraction light and the -1 order diffraction light, transmissive light and reflective light are obtained, the transmissive light is input into a proportional monitoring light path, the reflective light is input into a switch / amplitude modulation light path to perform twice diffraction, and twice diffraction +1 order light or twice diffraction -1 order light is obtained. The application does not have the problems of phase lockout risk, Raman laser mode competition and multiband crosstalk, can realize locking of Raman total light intensity and Raman light intensity proportion, and has the advantages of significantly improving robustness and stability of an atom interferometer.

The invention relates to a broadband Rydberg atom microwave detection system, and the system comprises a microwave transmitting module which is used for transmitting a mixed microwave signal composed of an intrinsic microwave signal and a to-be-detected microwave signal; the microwave slab waveguide is used for widening the working frequency band and amplifying the mixed microwave signal; the optical standing wave cavity module is arranged on the microwave slab waveguide and used for enabling the detection light and the coupling light to enter an optical standing wave cavity, enabling the coupling light to be thinned and restraining the coupling light to reciprocate in the optical standing wave cavity so as to broaden the instantaneous bandwidth; the atomic gas chamber is arranged on the microwave slab waveguide and located in the optical standing wave cavity module, and rubidium atoms are arranged in the atomic gas chamber; and the detection module is arranged corresponding to the atomic gas chamber and is used for receiving and analyzing the detection light emitted from the atomic gas chamber so as to realize microwave detection. Through the optical standing wave cavity and the microwave slab waveguide, the instantaneous bandwidth of the single intrinsic microwave is widened, the working frequency band is widened, the bandwidth problem can be solved, and high-sensitivity microwave detection can be achieved.

The invention relates to the technical field of atomic frequency standards, in particular to a miniaturized rubidium atomic clock, which comprises a light source module, a microwave cavity module, a microwave coupling module and a control module, and is characterized in that the light source module, the microwave cavity module and the microwave coupling module are sequentially arranged along a light path; parallel light output by the light source module passes through the microwave cavity module and then is received by the microwave coupling module; the microwave coupling module and the microwave cavity module are fixedly mounted through a supporting structure; the control module is electrically connected with the light source module, the microwave cavity module and the microwave coupling module. The miniature laser is used as a light source to replace a traditional spectral lamp, so that the size and power consumption of the light source are reduced; the manufacturing of the microwave cavity and microwave feed-in are directly realized by adopting a circuit board process, the size of a physical system is further reduced, and the miniature rubidium atomic clock has the advantages of low cost, short production period and capability of realizing batch production, and is expected to realize mass production of commercial products of miniature rubidium atomic clocks.

The invention discloses a high-sealing miniature atomic gas chamber for quantum sensing, which sequentially comprises a first glass substrate, a second glass substrate and a third glass substrate from top to bottom, the second glass substrate is internally provided with an atmosphere chamber cavity for accommodating buffer gas and atom steam, a small rubidium source cavity for placing a solid rubidium source and a micro-pore channel for connecting the large cavity and the small cavity to release rubidium atoms; the light-passing windows of the first glass substrate and the third glass substrate are respectively aligned with the atmosphere chamber cavity to form a double-end optical path; the invention further discloses a manufacturing method. According to the invention, a three-layer glass structure is adopted, femtosecond laser cutting and welding are carried out, local gold plating is carried out to enhance absorption, and the high-sealing micro atomic gas chamber is suitable for high-precision quantum sensing equipment such as chip-level atomic clocks, atomic magnetometers and quantum gyroscopes.

The application discloses a kind of based on single laser excitation and cavity enhancement's rubidium two-photon optical clock system and processing method, the device includes: light source, stable light path, laser power stabilization loop, rubidium two-photon transition physical module and fluorescence detection servo control module;Stable light path includes first half-wave plate, isolator and first polarization beam splitter;Foundation light path includes electro-optic modulator, second half-wave plate, second polarization beam splitter, first high reflectivity mirror and first mirror;Frequency reference sub light path includes optical frequency comb, third plano-convex lens, periodically poled lithium niobate crystal, second plano-convex lens and second mirror;Laser power stabilization loop includes piezoelectric ceramic, first photodetector and power stabilization module;Rubidium two-photon transition physical module includes heatable rubidium atom cell, second high reflectivity mirror and magnetic shield cover.The application solves the problems of existing technology, such as complex laser supporting system, large volume and power consumption.

The rubidium atomic clock comprises an optical unit, a microwave unit and a servo frequency control synthesis unit, the microwave unit comprises a first rubidium bubble, a second rubidium bubble, a microwave antenna, the microwave cavity and the auxiliary cavity, the first rubidium bubble and the microwave antenna are arranged in a cavity body of the microwave cavity, and the second rubidium bubble is arranged in the cavity body of the microwave cavity. The first rubidium bubble is arranged in a cavity body of the auxiliary cavity, the second rubidium bubble is arranged in a cavity body of the auxiliary cavity, the auxiliary cavity and the microwave cavity are integrally processed by adopting the same material, the cavity bodies of the first rubidium bubble and the second rubidium bubble are filled with the same buffer gas and rubidium atoms, and the first rubidium bubble and the second rubidium bubble have the same temperature coefficient. According to the rubidium atomic clock with the auxiliary microwave cavity, laser frequency shift, temperature frequency shift and noise of a detector are greatly reduced, and meanwhile, the contrast ratio of signals of the rubidium atomic clock is improved, so that the medium and long term stability index of the rubidium atomic clock can be improved.