激光技术2012，Vol.36Issue(6)：832-835,4.DOI:10.3969/j.issn.1001-3806.2012.06.030
1维光学粘胶作用下铬原子束空间分布特性
Distribution of chromium atoms in 1-D optical molasses
摘要
Abstract
In order to analyze effect of atomic distribution on deposition preparation of nanometer gratings under the action of collimated laser, based on semi-classical theory and Runge-Kutta numerical integration algorithm, the characteristics of dissipative force and the distribution of chromium atoms in 1 -D optical molasses was discussed. Then the distribution of chromium atoms was simulated under different laser parameters. The results show that the best distribution appears when the detuning of the laser frequency equals to half of line width of chromium atoms. After the atom beam passing through 1 -D optical molasses, its spatial width was suppressed to 0. 43 times of that before and the atomic density becomes 1. 79 times larger than before, under the condition that laser power equals to 40mW and laser detuning is -2. 5MHz. This results show that the atomic distribution can be improved under the action of collimated laser and it' s helpful for the deposition preparation of nanometer gratings.关键词
激光光学/1维光学粘胶/耗散力/空间分布Key words
laser optics/ 1 -D optical molasses/ dissipative force/ spatial distribution分类
数理科学引用本文复制引用
朱保华,黄静,张宝武,张文涛,蒋曲博,熊显名..1维光学粘胶作用下铬原子束空间分布特性[J].激光技术,2012,36(6):832-835,4.基金项目
国家自然科学基金资助项目(11064002) （11064002）
浙江省科技计划资助项目(2011R10094) （2011R10094）
广西省自然科学基金资助项目(2012GXNSFAA053229) （2012GXNSFAA053229）
