| ATOMIC AND MOLECULAR PHYSICS |
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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
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1Division of Electricity and Quantum Metrology, National Institute of Metrology, Beijing 100013
2Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084
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| Cite this article: |
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WANG Qiang, LIN Bai-Ke, ZHAO Yang et al 2011 Chin. Phys. Lett. 28 033201 |
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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.
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| Keywords:
32.30.-r
37.10.De
37.10.Gh
06.20.fb
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Received: 09 October 2010
Published: 28 February 2011
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