Open AccessImprovement in the signal amplitude and bandwidth of an optical atomic magnetometer via alignment-to-orientation conversion
Author(s) -
Meng-Yang Zhu,
Li Wang,
Jun Guo,
Zhao Xitao,
Xiujie Sun,
Chaohui Ye,
Zhou Xiao-Hong
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.