Magneto-Optical Trapping of 88Sr atoms with 689nm Laser
WANG Qiang1**, LIN Bai-Ke1, ZHAO Yang2, LI Ye1, WANG Shao-Kai1, WANG Min-Ming1, ZANG Er-Jun1, LI Tian-Chu1, FANG Zhan-Jun1
1Division of Electricity and Quantum Metrology, National Institute of Metrology, Beijing 100013 2Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084
Magneto-Optical Trapping of 88Sr atoms with 689nm Laser
WANG Qiang1**, LIN Bai-Ke1, ZHAO Yang2, LI Ye1, WANG Shao-Kai1, WANG Min-Ming1, ZANG Er-Jun1, LI Tian-Chu1, FANG Zhan-Jun1
1Division of Electricity and Quantum Metrology, National Institute of Metrology, Beijing 100013 2Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084
摘要We report the experimental realization of strontium magneto-optical trap (MOT) operating on the intercombination transition 1S0–3P1 at 689 nm, namely red MOT. A 689 nm laser used for cooling and trapping is injection locked to a master laser, whose linewidth is narrowed to 150 Hz by locking to a high finesse optical reference cavity. 88Sr atoms pre-cooled and trapped by the broad 1S0–1P1 transition at 461 nm are transferred to the red MOT with the help of a time sequence controller. The transfer ratio is about 20% and the red MOT's temperature is estimated to be less than 20 µK by the time-of-flight (TOF) image analysis.
Abstract：We report the experimental realization of strontium magneto-optical trap (MOT) operating on the intercombination transition 1S0–3P1 at 689 nm, namely red MOT. A 689 nm laser used for cooling and trapping is injection locked to a master laser, whose linewidth is narrowed to 150 Hz by locking to a high finesse optical reference cavity. 88Sr atoms pre-cooled and trapped by the broad 1S0–1P1 transition at 461 nm are transferred to the red MOT with the help of a time sequence controller. The transfer ratio is about 20% and the red MOT's temperature is estimated to be less than 20 µK by the time-of-flight (TOF) image analysis.
WANG Qiang**;LIN Bai-Ke;ZHAO Yang;LI Ye;WANG Shao-Kai;WANG Min-Ming;ZANG Er-Jun;LI Tian-Chu;FANG Zhan-Jun
. Magneto-Optical Trapping of 88Sr atoms with 689nm Laser[J]. 中国物理快报, 2011, 28(3): 33201-033201.
WANG Qiang**, LIN Bai-Ke, ZHAO Yang, LI Ye, WANG Shao-Kai, WANG Min-Ming, ZANG Er-Jun, LI Tian-Chu, FANG Zhan-Jun
. Magneto-Optical Trapping of 88Sr atoms with 689nm Laser. Chin. Phys. Lett., 2011, 28(3): 33201-033201.
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2011, Vol. 28 
