Investigation on Rotation Response of Spin-Exchange Relaxation-Free Atomic Spin Gyroscope
Autor: | Feng Liu, Jiancheng Fang, Yuanhong Yang, Wei Jin, Wei Quan, Dongying Chen |
---|---|
Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
General Computer Science
Magnetometer 02 engineering and technology Atomic spin gyroscope 01 natural sciences law.invention 010309 optics law 0103 physical sciences General Materials Science Spin (physics) Saturation (magnetic) Physics atomic spin precession detection Dynamic range General Engineering spin-exchange relaxation-free Gyroscope 021001 nanoscience & nanotechnology Nonlinear system Interferometry Relaxation rate Physics::Space Physics nonlinear rotation response model lcsh:Electrical engineering. Electronics. Nuclear engineering Atomic physics 0210 nano-technology lcsh:TK1-9971 |
Zdroj: | IEEE Access, Vol 7, Pp 148176-148182 (2019) |
ISSN: | 2169-3536 |
Popis: | 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-21Ne 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. |
Databáze: | OpenAIRE |
Externí odkaz: |