基于相干人口跳动的磁力计

Li Liu, Yigen Wang, Xiao-na Zhao, Yuxin Zhuang, Zhong Wang
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引用次数: 0

摘要

提出了一种从CPT法扩展而来的新型磁场测量方法。它是基于相干群体跳动(CPB)现象。在典型的三能级系统中,当两个泵浦激光场的频差由于基态分裂而发生失谐时,CPB振荡频率等于失谐。通过数字处理,我们可以检测出外磁场变化时的拍频移,从而获得塞曼频移,从而准确地计算出外磁场强度。
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A magnetometer based on coherent population beating
We proposed a novel magnetic field measurement method extended from the CPT method. It is based on the coherent population beating (CPB) phenomenon. CPB occurs in a typical three-level system, when the frequency difference of the two pump laser fields have a detuning from the ground states splitting, and the CPB oscillation frequency is equal to the detuning. We are able to detect the beat frequency shift with the external magnetic field changing via digital processing, thus we can acquire the Zeeman frequency shift and then calculate external magnetic field intensity accurately.
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