摘要
We present our experiment on magnetic field induced spectroscopy of the ^(1)S0–^(3)P0 transition of ^(88)Sr atoms with a 10 Hz linewidth laser.The ^(88)Sr atoms are cooled by two stage laser cooling.After the second stage narrow line laser cooling,the temperature of the atoms is reduced to~3μK.The atoms are then loaded into an 813 nm one-dimensional optical lattice.A homemade 698 nm laser with 10 Hz linewidth and maximum intensity of more than 100 W/cm2 is used to probe the ^(88)Sr atoms in the lattice.By means of a magnetic field of~1 mT and a probe laser with 50 ms pulse and~6 W/cm^(2) intensity,the Doppler free ^(88)Sr ^(1)S0–^(3)P0 transition spectrum with a linewidth of 208 Hz is obtained.
作者
林弋戈
王强
李烨
林百科
王少凯
孟飞
赵阳
曹建平
臧二军
李天初
方占军
LIN Yi-Ge;WANG Qiang;LI Ye;LIN Bai-Ke;WANG Shao-Kai;MENG Fei;ZHAO Yang;CAO Jian-Ping;ZANG Er-Jun;LI Tian-Chu;FANG Zhan-Jun(School of Opto-Electronics,Beijing Institute of Technology,Beijing 100081;Time and Frequency Metrology Division,National Institute of Metrology,Beijing 100013;Department of Precision Instruments and Mechanology,Tsinghua University,Beijing 100084)
基金
Supported by the National Basic Research Program of China under Grant No 2010CB922902.
