Improvement in the signal amplitude and bandwidth of an optical atomic magnetometer via alignment-to-orientation conversion | Zendy

Maohua Zhu | Zendy; Li Wang | Zendy; Jun Guo | Zendy; Xiuchao Zhao | Zendy; Xianping Sun | Zendy; Chaohui Ye | Zendy; Xin Zhou | Zendy

Open Access

Improvement in the signal amplitude and bandwidth of an optical atomic magnetometer via alignment-to-orientation conversion

Author(s) -

Maohua Zhu,

Li Wang,

Jun Guo,

Xiuchao Zhao,

Xianping Sun,

Chaohui Ye,

Xin Zhou

Publication year - 2021

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.435841

Subject(s) - laser linewidth , magnetometer , optics , amplitude , bandwidth (computing) , laser , physics , materials science , magnetic field , telecommunications , quantum mechanics , computer science

We evaluated the alignment-to-orientation conversion (AOC) at the cesium D1 line to improve a nonlinear magneto-optical rotation (NMOR) optical atomic magnetometer's signal amplitude and bandwidth. For the 6 2 S 1/2 F = 3 → 6 2 P 1/2 F' = 4 transition, the AOC-related NMOR achieves a 1.7-fold enhancement in signal amplitude compared to the conventional NMOR, benefiting from narrow linewidth and ultraweak power broadening. Therefore, an effective amplitude-to-linewidth ratio is maintained in the high-laser-power region. This method is beneficial for detecting high-frequency magnetic signals in nuclear magnetic resonance and biomagnetism, as the NMOR magnetometer bandwidth increases with laser power.

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