Saturated absorption spectrum of cesium micrometric-thin cell with suppressed crossover spectral lines  

作　　者：韩俊龙 王博闻 郑俊鹤 陈书源 肖伟 吴腾 郭弘 彭翔 Junlong Han;Bowen Wang;Junhe Zheng;Shuyuan Chen;Wei Xiao;Teng Wu;Hong Guo;Xiang Peng(School of Electronics,Peking University,Beijing 100871,China;Center for Quantum Information Technology,Peking University,Beijing 100871,China)

机构地区：[1]School of Electronics,Peking University,Beijing 100871,China [2]Center for Quantum Information Technology,Peking University,Beijing 100871,China

出　　处：《Chinese Physics B》2023年第7期353-360,共8页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.61571018 and 61531003).

摘　　要：Micrometric-thin cells(MCs)with alkali vapor atoms have been valuable for research and applications of hyperfine Zeeman splitting and atomic magnetometers under strong magnetic fields.We theoretically and experimentally study the saturated absorption spectra using a 100-μm cesium MC,where the pump and probe beams are linearly polarized with mutually perpendicular polarizations,and the magnetic field is along the pump beam.Because of the distinctive thin chamber of the MC,crossover spectral lines in saturated absorption spectra are largely suppressed leading to clear splittings of hyperfine Zeeman transitions in experiments,and the effect of spatial magnetic field gradient is expected to be reduced.A calculation method is proposed to achieve good agreements between theoretical calculations and experimental results.This method successfully explains the suppression of crossover lines in MCs,as well as the effects of magnetic field direction,propagation and polarization directions of the pump/probe beam on saturated absorption spectrum.The saturated absorption spectrum with suppressed crossover lines is used for laser frequency stabilization,which may provide the potential value of MCs for high spatial resolution strong-field magnetometry with high sensitivity.

关 键 词：micrometric-thin cells saturated absorption spectrum hyperfine Zeeman splitting crossover spectral lines laser frequency stabilization 

分 类 号：TB383.1[一般工业技术—材料科学与工程]