摘要
分析了极化碱金属气室的旋光特性,极化的原子气室宏观上可等效为一种法拉第旋光晶体,其旋光系数与原子自旋进动相关。提出了采用圆偏振探测光测量通过气室的左右旋圆偏振光相位差来实现原子自旋进动检测的思路。基于改进的全光纤反射型Sagnac干涉仪,搭建了光纤原子自旋进动检测系统,通过圆偏振探测光实现了无自旋交换弛豫态自旋进动信号的检测。在原子自旋陀螺仪实验平台上进行了实验验证并实现了陀螺效应,实验结果证明了所提理论的正确性。对陀螺性能进行了初步测试,得到其零偏不稳定性为0.29(°)/h。
The optical rotation property of a polarized alkali vapor cell is demonstrated. The polarized atomic gas chamber can be macroscopically equivalent to a Faraday polarized crystal, whose optical rotation coefficient is related to the spin precession of atoms. A novel atomic spin precession detection scheme is proposed by means of the detection of the phase difference between the left and the right circularly polarized probe lights when a circularly polarized probe light is propagating through the vapor cell. Based on the modified all-fiber reflective Sagnac interferometer, the fiber atomic spin precession detection system is built and the detection of spin precession signals in the spin exchanged relaxation free states is realized by a circularly polarized light. The detection scheme is verified and the gyroscopic effect is realized on the experimental platform of an atomic spin gyroscope. The experimental results confirm that the proposed theory is correct. The performance of this gyroscope is preliminarily tested and its zero-bias instability is 0.29(°)/h.
作者
杨远洪
刘琳妮
陈东营
杨福铃
全伟
房建成
Yang Yuanhong;Liu Linni;Chen Dongying;Yang Fuling;Quan Wei;Fang Jiancheng(School of Instrument Science and Opto-Electronics Engineering,Beihan g University,Beijing 100191,China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2019年第1期323-328,共6页
Acta Optica Sinica
基金
国家自然科学基金(U1637106
61227902)
创新团队发展计划(IRT1203)
关键词
测量
光纤光学
相干检测
原子自旋进动检测
SAGNAC干涉仪
无自旋交换弛豫
圆偏振光
measurement
fiber optics
coherent detection
atomic spin precession detection
Sagnac interferometer
spin-exchanged relaxation free
circularly polarized light
