High quality electromagnetically induced transparency spectroscopy of ^87Rb in a buffer gas cell with a magnetic field

We have studied the phenomenon of electromagnetically induced transparency（EIT） of ^87Rb vapor with a buffer gas in a magnetic field at room temperature. It is found that the spectral lines caused by the velocity selective optical pump effects get much weaker and wider when the sample cell is mixed...

Full description

Saved in:
Bibliographic Details
Published in中国物理B：英文版 Vol. 26; no. 7; pp. 101 - 105
Main Author 成红 王汉睦 张珊珊 辛培培 罗军 刘红平
Format Journal Article
LanguageEnglish
Published 2017
Subjects
体细胞
光谱法
电磁感应
磁场
缓冲气体
质量
透明度
高分辨率光谱
Online AccessGet full text

Cover

More Information
Summary:We have studied the phenomenon of electromagnetically induced transparency（EIT） of ^87Rb vapor with a buffer gas in a magnetic field at room temperature. It is found that the spectral lines caused by the velocity selective optical pump effects get much weaker and wider when the sample cell is mixed with a 5-Torr N_2 gas while the EIT signal is kept almost unchanged. A weighted least-square fit is also developed to remove the Doppler broadening completely. This spectral method provides a way to measure the Zeeman splitting with high resolution, for example, the Λ-type EIT resonance splits into four peaks on the D_2 line of ^87Rb in the thermal 2-cm vapor cell with a magnetic field along the electric field of the linearly polarized coupling laser. The high-resolution spectrum can be used to lock the laser to a given frequency by tuning the magnetic field.
Bibliography:We have studied the phenomenon of electromagnetically induced transparency（EIT） of ^87Rb vapor with a buffer gas in a magnetic field at room temperature. It is found that the spectral lines caused by the velocity selective optical pump effects get much weaker and wider when the sample cell is mixed with a 5-Torr N_2 gas while the EIT signal is kept almost unchanged. A weighted least-square fit is also developed to remove the Doppler broadening completely. This spectral method provides a way to measure the Zeeman splitting with high resolution, for example, the Λ-type EIT resonance splits into four peaks on the D_2 line of ^87Rb in the thermal 2-cm vapor cell with a magnetic field along the electric field of the linearly polarized coupling laser. The high-resolution spectrum can be used to lock the laser to a given frequency by tuning the magnetic field.
11-5639/O4
Hong Cheng1,2,Han-Mu Wang1,2,Shan-Shan Zhang1,2,Pei-Pei Xin1,2,Jun Luo1,2,Hong-Ping Liu1,2（ 1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China ;2 University of Chinese Academy of Sciences, Beijing 100049, China）
electromagnetically induced transparency; Zeeman effect; coherent interaction
ISSN:1674-1056
2058-3834