Characterization of nonlinear spectral linewidth and light shift in diffuse laser-cooled atoms  

作　　者：Yiran Yin An-Ning Xu Jin Peng Bei Liu 殷怡然;许安宁;彭瑾;刘贝

机构地区：[1]Key Laboratory of Laser and Infrared System,Ministry of Education,Center for Optics Research and Engineering(CORE),Shandong University,Qingdao 266237,China

出　　处：《Chinese Physics B》2025年第2期250-255,共6页中国物理B(英文版)

基　　金：Project supported by Shandong Provincial Natural Science Foundation(Grant No.ZR2023LLZ003);the National Natural Science Foundation of China(Grant No.62005145);Fundamental Research Fund of Shandong University,and Shandong Provincial Postdoctoral Science Foundation(Grant No.SDBX202302002)。

摘　　要：We demonstrate an integrating sphere to cool~(87)Rb atoms and measure the recoil-induced resonance and electromagnetically induced absorption spectrum.We measure the relationship between their linewidth and light shift with variation of the detuning and power of the cooling laser and study the performance of the diffuse laser cooling mechanism by the absorption linewidth radio?ν_E/?ν_R and light shift|?_R-?_E|using nonlinear spectroscopy.Specifically,when?ν_E/?ν_R reaches a value of 1.57,the temperature and number of cold atoms achieve the optimal cooling effect.This characterization of absorption linewidth and light shift will provide a method to estimate whether diffuse light cooling achieves the best cooling effect,contributing to the future development of isotropic laser cooling for application in quantum sensing.

关 键 词：nonlinear spectrum diffuse laser cooling temperature measurement 

分 类 号：TN24[电子电信—物理电子学] O562[理学—原子与分子物理]