摘要
我们在实验上基于铯原子的2D+磁光阱获得了通量为8.5×1010原子/s、平均速度与速度分布分别为16m/s与4m/s、空间发散角为25mrad的冷原子束流,通过相敏的飞行时间法对原子束流的通量进行了准确测量,并对背景原子气压、推送光功率以及冷却光失谐等参量对原子束流的影响进行了实验研究与分析。
A high-flux Cesium atomic beam is produced from a 2D＋Magneto-optical trap（MOT）.The cald atomic beam has a flux of about 8.5×1010 atoms/s,a mean velocity of about 16 m/s,velocity distribution of 4 m/s and has a divergence of 25 mrad.Phase-sensitive time-of-flight method is used to measure the flux of the atomic beam.It is also investigated that how the atomic beam depends on the background alkali pressure,the power of push beam,and the detuning of the cooling beams of 2D＋MOT.
出处
《量子光学学报》
CSCD
北大核心
2013年第3期262-270,共9页
Journal of Quantum Optics
基金
国家自然科学基金(61227902
61121003)
关键词
2D+磁光阱
高通量
原子束流
相敏的飞行时间法
2D＋magneto-optical trap
high flux
atomic beam
phase-sensitive time-of-flight method
