Electromagnetically induced grating in a thermal N-type four-level atomic system  

作　　者：Ya-Bin Dong Jun-Yan Li Zhi-Ying Zhou 董雅宾;李俊燕;周志英(Department of Physics, Shanxi University, Taiyuan 030006, China)

机构地区：[1]Department of Physics, Shanxi University, Taiyuan 030006, China

出　　处：《Chinese Physics B》2017年第1期194-199,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grants Nos.11004126 and 61275212);the Natural Science Foundation of Shanxi Province,China(Grant No.2011021003-1)

摘　　要：The electromagnetically induced grating effect in thermal and cold atoms has been studied theoretically. Studies have shown that, by adjusting the parameters, the first-order diffraction efficiency of the probe beam in the cold atomic system and the thermal atomic system is 34% and 31%, respectively, which is very close to the ideal diffraction efficiency of the sinusoidal grating. However, it is more difficult to prepare the cold atomic system than to prepare the thermal atomic system in the practical application, so the study of the electromagnetically induced grating effect in the thermal atomic system may be helpful for practical applications.The electromagnetically induced grating effect in thermal and cold atoms has been studied theoretically. Studies have shown that, by adjusting the parameters, the first-order diffraction efficiency of the probe beam in the cold atomic system and the thermal atomic system is 34% and 31%, respectively, which is very close to the ideal diffraction efficiency of the sinusoidal grating. However, it is more difficult to prepare the cold atomic system than to prepare the thermal atomic system in the practical application, so the study of the electromagnetically induced grating effect in the thermal atomic system may be helpful for practical applications.

关 键 词：electromagnetically induced grating phase modulation first-order diffraction efficiency thermal atomic system 

分 类 号：O441.3[理学—电磁学]