%0 Journal Article
%T Generation of an adjustable double-well optical trap by shift phase gratings<br>用错位相位光栅产生的可调光学双阱
%A Ji Xian-Ming
%A Xu Shu-Wu
%A Lu Jun-Fa
%A Xu Dong-Mei
%A Yin Jian-Ping
%A <br>纪宪明
%A 徐淑武
%A 陆俊发
%A 徐冬梅
%A 印建平
%J 物理学报
%D 2008
%I 
%X A novel scheme was proposed to form the double-well optical trap by using shift phase gratings. A few pairs of adjustable double-well optical traps for trapping cold atoms or cold molecules were formed on the focal plane when the gratings were illuminated by plane light wave (or TEM00 mode Gaussian light wave) and focused by positive lens. The intensity distribution was calculated, and then the intensity distribution gradients as well as the analytical relations between geometrical parameters of the traps and the parameters of the optical system were derived. At the same time, three different evolution processes from double-well to unit-well were investigated. Also, optical dipole potential and photon scattering rate of the trapped cold atoms were calculated. The results show that the scheme not only is simple and convenient to realize, but also has wide application prospect in many fields, such as atomic physics, atomic optics, molecular optics and quantum optics.
%K atomic optics
%K phase grating
%K double-well optical trap
%K cold atoms trapping<br>原子光学，
%K 相位光栅，
%K 光学双阱，
%K 冷原子囚禁
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=1E012205D7F159EE1EC3710272937755&yid=67289AFF6305E306&vid=11B4E5CC8CDD3201&iid=59906B3B2830C2C5&sid=3AADECC0246F44FB&eid=F283DF80CE3B69E4&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0