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Suppression of magnetic field gradient of atomic spin polarization based on systematic parameter analysis in K-Rb-21Ne comagnetometer

Senhua Lei, Kai Zhang, Zhihong Wu +4 more

Sensors and Actuators A PhysicalApr 21, 20261 citation

Rotation Measurement with a K-Rb- 21 Ne Atomic Spin Co-magnetometer Gyroscope

Yao Chen, Sheng Zou, Lihong Duan +1 more

Bulletin of the American Physical SocietyJun 4, 20140 citations

Atomic spin gyroscope based on 129Xe-Cs comagnetometer

Jiancheng Fang, Jie Qin, Shuangai Wan +2 more

Atomic spin gyroscope (ASG) based on comagnetometer is a high sensitive and compact gyroscope for future inertial navigation applications. The start-up time was several hours of the demonstrated ASGs based on 3 He-K or 21 Ne-Rb-K comagnetometer, and only a few inertial navigation applications allow such a long time for preparation. We report the demonstration of an ASG based on 129 Xe-Cs comagnetometer, which decreases the start-up time to 10 minutes and decreases the operation temperature by 40% as well. By operating this ASG in spin exchange relaxation free regime, a sensitivity of 7×10 −5 °/(s Hz 1/2 ) was achieved.Atomic spin gyroscope (ASG) based on comagnetometer is a high sensitive and compact gyroscope for future inertial navigation applications. The start-up time was several hours of the demonstrated ASGs based on 3 He-K or 21 Ne-Rb-K comagnetometer, and only a few inertial navigation applications allow such a long time for preparation. We report the demonstration of an ASG based on 129 Xe-Cs comagnetometer, which decreases the start-up time to 10 minutes and decreases the operation temperature by 40% as well. By operating this ASG in spin exchange relaxation free regime, a sensitivity of 7×10 −5 °/(s Hz 1/2 ) was achieved.

Chinese Science BulletinMay 1, 201340 citations

Atom spin gyroscope based on Rb-Xe vapor cell.

Sin Hyuk Yim, Sangkyung Lee, Tae Hyun Kim +2 more

Bulletin of the American Physical SocietyMay 30, 20190 citations

A novel Cs-129Xe atomic spin gyroscope with closed-loop Faraday modulation

Jiancheng Fang, Shuangai Wan, Jie Qin +4 more

We report a novel Cs-(129)Xe atomic spin gyroscope (ASG) with closed-loop Faraday modulation method. This ASG requires approximately 30 min to start-up and 110 °C to operate. A closed-loop Faraday modulation method for measurement of the optical rotation was used in this ASG. This method uses an additional Faraday modulator to suppress the laser intensity fluctuation and Faraday modulator thermal induced fluctuation. We theoretically and experimentally validate this method in the Cs-(129)Xe ASG and achieved a bias stability of approximately 3.25 °∕h.We report a novel Cs-(129)Xe atomic spin gyroscope (ASG) with closed-loop Faraday modulation method. This ASG requires approximately 30 min to start-up and 110 °C to operate. A closed-loop Faraday modulation method for measurement of the optical rotation was used in this ASG. This method uses an additional Faraday modulator to suppress the laser intensity fluctuation and Faraday modulator thermal induced fluctuation. We theoretically and experimentally validate this method in the Cs-(129)Xe ASG and achieved a bias stability of approximately 3.25 °∕h.

Review of Scientific InstrumentsAug 1, 201341 citations

Suppression of Low-Frequency Magnetic Drift Based on Magnetic Field Sensitivity in K-Rb-21Ne Atomic Spin Comagnetometer

Ye Liu, Wenfeng Fan, Yang Fu +3 more

A spin-exchange relaxation-free comagnetometer is a promising high-precision gyroscope as its inertial measurement sensitivity can rival that of existing technologies. The magnetic field error is one of the main factors that limits the long-term stability of the comagnetometer. The steady-state response and frequency response models of a K-Rb-21Ne comagnetometer are modified by considering the spin-exchange rate between the electron spins and the nuclear spins. The modified models are used to redefine the bias magnetic sensitivity of the K-Rb-21Ne comagnetometer and the suppression method of low-frequency magnetic field error is proposed. We demonstrate the magnetic drift suppression method proposed in the article by optimizing the cell temperature and pump laser power density. This study is helpful to improve the rotation measurement performance of the K-Rb-21Ne comagnetometer.A spin-exchange relaxation-free comagnetometer is a promising high-precision gyroscope as its inertial measurement sensitivity can rival that of existing technologies. The magnetic field error is one of the main factors that limits the long-term stability of the comagnetometer. The steady-state response and frequency response models of a K-Rb-21Ne comagnetometer are modified by considering the spin-exchange rate between the electron spins and the nuclear spins. The modified models are used to redefine the bias magnetic sensitivity of the K-Rb-21Ne comagnetometer and the suppression method of low-frequency magnetic field error is proposed. We demonstrate the magnetic drift suppression method proposed in the article by optimizing the cell temperature and pump laser power density. This study is helpful to improve the rotation measurement performance of the K-Rb-21Ne comagnetometer.

IEEE Transactions on Instrumentation and MeasurementJan 1, 202219 citations

Atomic spin gyroscope based on 129Xe-Cs comagnetometer

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Atomic spin gyroscope based on 129Xe-Cs comagnetometer

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