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Realization of High Optical Density Rb Magneto-optical Trap |
| HAN Yan-Xu, LIU Yong-Hong, ZHANG Chun-Hong, LI Shu-Jing, WANG Hai |
| The State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006 |
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| Cite this article: |
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HAN Yan-Xu, LIU Yong-Hong, ZHANG Chun-Hong et al 2009 Chin. Phys. Lett. 26 023201 |
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Abstract We report experimental demonstration of a magneto-optical trap (MOT) of Rb atoms with a high optical density. With 2.2-cm-diameter cooling laser beams, we achieve an optical density of nearly 11 for about 2.6×1010 trapped Rb atoms with the beam intensity of about 6.6mW/cm2 per beam. The temperature of the cold atoms is about 250μK. Furthermore, by ramping the magnetic field gradient from 8G/cm to about 20G/cm, the atomic cloud in the MOT is compressed and the optical density is up to 16.
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| Keywords:
32.80.Pj
32.80.Qk
32.10.-f
32.80.Lg
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Received: 20 November 2008
Published: 20 January 2009
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