Dependence of loading time on control parameters in a standard vapour-oaded magneto-optical trap  

作　　者：张一驰 武寄洲 李玉清 马杰 汪丽蓉 赵延霆 肖连团 贾锁堂 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,College of Physics and Electronics Engineering,Shanxi University

出　　处：《Chinese Physics B》2011年第12期227-232,共6页中国物理B（英文版）

基　　金：supported by the National High Technology Research and Development Program of China (Grant No. 2009AA01Z319);the National Basic Research Program of China (Grant No. 2006CB921603);the National Natural Science Foundation of China (Grant Nos. 61008012,11074154,10934004,60978018,60978001,and 60808009);the Natural Science Foundation of Shanxi Province of China (Grant No. 2009011059-2);the National Natural Science Foundation for Excellent Research Team (Grant No. 60821004);the New Teacher Foundation of the Ministry of Education of China (Grant No. 20101401120004);the Natural Science Foundation of Shanxi Province of China (Grant No. 2009011059-2)

摘　　要：Loading time is one of the most important dynamic characteristics of a magneto-optical trap. In this paper, we primarily report on a detailed experimental study of the effects of some magneto-optical trap control parameters on loading time, including the background vacuum pressure, the magnetic field gradient, and the intensities of trapping and repumping lasers. We compare the results with previous theoretical and experimental results, and give qualitative analysis. These experimental investigations offer some useful guidelines to coatrol the loading time of magneto-optical traps. The controllable loading time achieved is helpful to enhance the signal-to-noise ratio of photoassociation spectroscopy, which is remarkably improved from 7 to 28.6.Loading time is one of the most important dynamic characteristics of a magneto-optical trap. In this paper, we primarily report on a detailed experimental study of the effects of some magneto-optical trap control parameters on loading time, including the background vacuum pressure, the magnetic field gradient, and the intensities of trapping and repumping lasers. We compare the results with previous theoretical and experimental results, and give qualitative analysis. These experimental investigations offer some useful guidelines to coatrol the loading time of magneto-optical traps. The controllable loading time achieved is helpful to enhance the signal-to-noise ratio of photoassociation spectroscopy, which is remarkably improved from 7 to 28.6.

关 键 词：cold atoms loading time magneto-optical trap 

分 类 号：O562[理学—原子与分子物理]