论文标题
Herriott-cavity辅助全光原子矢量磁力计
Herriott-cavity-assisted all-optical atomic vector magnetometer
论文作者
论文摘要
我们报告了使用RB蒸气电池中的双铃泵泵梁的全光原子矢量磁力计。该矢量磁力计由两个正交光学泵梁组成，幅度调制为$^{85} $ rb和$^{87} $ rb larmor频率。我们同时使用这两个泵浦光束使用单个探针梁在第三方向上检测原子信号，并使用调制的原子信号和驾驶梁之间的相位延迟提取场取向信息。通过在蒸气电池内添加Herriott腔，我们提高了磁力计的灵敏度。我们研究了该矢量磁力计在范围从100〜mg到500毫克的磁场中的性能，并在10〜Hz上方的10〜 $ $ rad/hz $^{1/2} $中表现出比10〜 $ $ rad/hz $^{1/2} $更好的场角灵敏度。
We report an all-optical atomic vector magnetometer using dual Bell-Bloom optical pumping beams in a Rb vapor cell. This vector magnetometer consists of two orthogonal optical pumping beams, with amplitude modulations at $^{85}$Rb and $^{87}$Rb Larmor frequencies respectively. We simultaneously detect atomic signals excited by these two pumping beams using a single probe beam in the third direction, and extract the field orientation information using the phase delays between the modulated atomic signals and the driving beams. By adding a Herriott cavity inside the vapor cell, we improve the magnetometer sensitivity. We study the performance of this vector magnetometer in a magnetic field ranging from 100~mG to 500~mG, and demonstrate a field angle sensitivity better than 10~$μ$rad/Hz$^{1/2}$ above 10~Hz.
