Akira Terao, Kazuhiro Ban, Sunao Ichihara, Natsuhiko Mizutani and Tetsuo Kobayashi
Akira Terao, Kazuhiro Ban, Sunao Ichihara, Natsuhiko Mizutani and Tetsuo Kobayashi
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寺尾晃、坂一弘、市原须直、水谷夏彦、小林哲夫
DOI：
10.1103/physreva.88.063413
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发表时间：
2013
影响因子：
2.9
通讯作者：
Natsuhiko Mizutani and Tetsuo Kobayashi
中科院分区：
文献类型：
--
作者：
Akira Terao;Kazuhiro Ban;Sunao Ichihara;Natsuhiko Mizutani and Tetsuo Kobayashi
提出了一种具有独特带通频率响应的光泵标量原子磁强计的工作条件。在这种工作条件下，磁强计的信号响应在非零谐振频率附近增加了三倍。共振频率等于Larmor频率和用于激励的振荡磁场频率之间的失谐量。用调制偏置磁场下Bloch方程的一阶微扰展开式的特征解释了这种共振现象。标量磁强计在其共振频率附近提供了增强的磁响应，甚至超过了截止频率，该频率被定义为自旋极化的相位驰豫时间的倒数。
We propose an operating condition for an optically pumped scalar atomic magnetometer with a unique band-pass frequency response. Under this operating condition, the signal response of the magnetometer is increased threefold around a nonzero resonance frequency. The resonance frequency is equal to the detuning between the Larmor frequency and the frequency of the oscillating magnetic field used for excitation. The resonance is explained in terms of the characteristics of the first-order perturbation expansion of the Bloch equation for a modulated bias magnetic field. The scalar magnetometer provides an enhanced magnetic response around its resonance frequency even beyond the cutoff frequency, which is defined as the inverse of the phase relaxation time of the spin polarization.