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Title: Investigation on rotation response of spin-exchange relaxation-free atomic spin gyroscope
Authors: Yang, YH
Chen, DY
Jin, W 
Quan, W
Liu, F
Fang, JC
Issue Date: 2019
Source: IEEE access, 10 Oct. 2019, v. 7, p. 148176-148182
Abstract: Spin-exchange relaxation-free atomic spin gyroscope (SERF gyro) has ultrahigh theoretical sensitivity and is regarded as one of the most potential atomic gyroscopes. To investigate its rotation response, a high linear atomic spin precession detection module was developed firstly by modifying the fiber reflective Sagnac interferometer for atomic spin precession detection and operating it in closed-loop mode. The SERF gyro based on K-Rb-Ne-21 comagnetometer was built and tested and appeared obvious nonlinear response feature. The nonlinear rotation response model was deduced by assuming the rotation-induced nuclei spin procession detecting as an in-situ magnetometer inside the SERF gyro and the fitting curves are in good agreement with the experimental results. The optimized pump power for maximum sensitivity and measurable dynamic range were analyzed theoretically and demonstrated experimentally. The investigation results show that the nonlinear rotation response is an intrinsic property of SERF gyro and its measurable dynamic range is limited due to the saturation characteristic of the sum of pumping and relaxation rate. This indicates that SERF gyro is propitious to a position gyroscope with high sensitivity.
Keywords: Atomic spin gyroscope
Spin-exchange relaxation-free
Nonlinear rotation response model
Atomic spin precession detection
Publisher: Institute of Electrical and Electronics Engineers
Journal: IEEE access 
EISSN: 2169-3536
DOI: 10.1109/ACCESS.2019.2946379
Rights: This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see http://creativecommons.org/licenses/by/4.0/
The following publication Y. Yang, D. Chen, W. Jin, W. Quan, F. Liu and J. Fang, "Investigation on Rotation Response of Spin-Exchange Relaxation-Free Atomic Spin Gyroscope," in IEEE Access, vol. 7, pp. 148176-148182, 2019 is available at https://dx.doi.org/10.1109/ACCESS.2019.2946379
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