Magnetic Field Induced Spectroscopy of 88Sr Atoms Probed with a 10 Hz Linewidth Laser
LIN Yi-Ge1,2**, WANG Qiang2,3, LI Ye2,3, LIN Bai-Ke2, WANG Shao-Kai2, MENG Fei2, ZHAO Yang2,3, CAO Jian-Ping2, ZANG Er-Jun2, LI Tian-Chu2, FANG Zhan-Jun2
1School of Opto-Electronics, Beijing Institute of Technology, Beijing 100081 2Time and Frequency Metrology Division, National Institute of Metrology, Beijing 100013 3Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084
Abstract:We present our experiment on magnetic field induced spectroscopy of the 1S0–3P0 transition of 88Sr atoms with a 10 Hz linewidth laser. The 88Sr atoms are cooled by two stage laser cooling. After the second stage narrow line laser cooling, the temperature of the atoms is reduced to ~3 μK. 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 88Sr atoms in the lattice. By means of a magnetic field of ~1 mT and a probe laser with 50 ms pulse and ~6 W/cm2 intensity, the Doppler free 88Sr 1S0–3P0 transition spectrum with a linewidth of 208 Hz is obtained.
. [J]. Chin. Phys. Lett., 2013, 30(1): 14206-014206.
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. Magnetic Field Induced Spectroscopy of 88Sr Atoms Probed with a 10 Hz Linewidth Laser. Chin. Phys. Lett., 2013, 30(1): 14206-014206.
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