摘要
提出了一种采用单光束照明二元π相位板与透镜组合系统产生的适用于冷原子与分子囚禁的可控制光学双阱方案 .计算了双阱的光强分布 ,研究了双阱到单阱的演化过程 ,并导出了双阱几何参数、光强分布、强度梯度及其曲率与光学系统参数间的解析关系 .研究发现 ,通过相对移动二元相位板可实现光学双阱到单阱的连续双向演化 ,得到了双阱间距与相位板移动距离的关系 .该方案不仅简单可行、操作方便 ,而且在原子物理、原子光学。
In this paper,we propose a novel scheme to form a controllable double-well optical trap for cold atoms or molecules by using a system composed of a binary π-phase plate and a lens illuminated by a plane light wave. We calculate the intensity distribution of the double-well trap,and study the evolution process of the optical trap from two wells to a single well,and derive the analytical relation between the characteristic parameters of the double-well trap (including geometric parameters,the intensity distributions,intensity gradients and their curvatures) and the parameters of optical system. We find that our double-well trap can be continuously changed into a single-well trap by moving the π-phase plate along the x direction,and the relation between the distance of the trapping centers of the two wells and the moving distance of the π-phase plate is obtained by data fitting. In addition,our double-well scheme is not only simple and convenient,but also has some important and wide applications in the fields of atomic physics,atom optics,molecule optics and quantum optics and so on.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2004年第12期4163-4172,共10页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10 1740 5 0
10 3 740 2 9)
江苏省教育厅新世纪学术带头人培养基金
上海市重点学科建设基金
教育部 2 11专项基金
江苏省教育厅自然科学基金(批准号:0 4KJB14 0 10 9)资助的课题~~
