【摘要】 采用基于圆偏振探测光的光纤Sagnac原子自旋进动闭环检测技术,实验测试了无自旋交换弛豫（SERF）原子自旋陀螺在两种不同抽运状态下的角速度输入/输出特性,发现了SERF原子自旋陀螺输出的非线性现象。基于SERF原子自旋陀螺理论,建立了非线性响应模型并进行仿真研究,仿真结果与实验测试一致。研究表明:SERF原子自旋陀螺的非线性由原子内在相互作用决定,与总电子弛豫率R_tot密切相关。更多还原

【Abstract】 The angular velocity input/output characteristics of a spin-exchange relaxation-free（SERF）atomic spin gyroscope under two different pumping conditions were experimentally tested via an optical fiber Sagnac atomic spin precession closed-loop detection technique based on circularly polarized probe lights. The nonlinearity of the SERF atomic spin gyroscope output was discovered. Based on the basic principle of the SERF atomic spin gyroscope, the nonlinear response model was established and the simulation study was carried out, and the simulation results were in agreement with the experimental results. This indicates that the nonlinearity of the SERF atomic spin gyroscope is determined by the internal interaction of atoms and is closely related to the total electron relaxation rate R_tot.更多还原