Laser frequency offset-locking using electromagnetically induced transparency spectroscopy of (85)Rb in magnetic field  

作　　者：Han-Mu Wang Hong Cheng Shan-Shan Zhang Pei-Pei Xin Zi-Shan Xu Hong-Ping Liu 王汉睦;成红;张珊珊;辛培培;徐子珊;刘红平(State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[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

出　　处：《Chinese Physics B》2018年第9期296-300,共5页中国物理B（英文版）

基　　金：Project supported by the National Key Basic Research Program of China(Grant No.2013CB922003);the National Natural Science Foundation of China(Grant Nos.91421305,91121005,and 11174329)

摘　　要：We have experimentally offset-locked the frequencies of two lasers using electromagnetically induced transparency（EIT） spectroscopy of ^（85）Rb vapor with a buffer gas in a magnetic field at room temperature. The magnetic field is generated by a permanent magnet mounted on a translation stage and its field magnitude can be varied by adjusting the distance between the magnet and Rb cell, which maps the laser locking frequency to the space position of the magnet. This frequency-space mapping technique provides an unambiguous daily laser frequency detuning operation with high accuracy.A repeatability of less than 0.5 MHz is achieved with the locking frequency detuned up to 184 MHz when the magnetic field varies from 0 up to 80 G.We have experimentally offset-locked the frequencies of two lasers using electromagnetically induced transparency（EIT） spectroscopy of ^（85）Rb vapor with a buffer gas in a magnetic field at room temperature. The magnetic field is generated by a permanent magnet mounted on a translation stage and its field magnitude can be varied by adjusting the distance between the magnet and Rb cell, which maps the laser locking frequency to the space position of the magnet. This frequency-space mapping technique provides an unambiguous daily laser frequency detuning operation with high accuracy.A repeatability of less than 0.5 MHz is achieved with the locking frequency detuned up to 184 MHz when the magnetic field varies from 0 up to 80 G.

关 键 词：electromagnetically induced transparency offset-lock rubidium atom magnetic field 

分 类 号：O441.3[理学—电磁学]