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光致原子解吸附对冷原子磁光阱装载的动力学研究
  • 期刊名称：物理学报
  • 时间：0
  • 页码：6423-6429
  • 语言：中文
  • 分类：O484.1[理学—固体物理;理学—物理]
  • 作者机构：[1]量子光学与光量子器件国家重点实验室,山西大学光电研究所,太原030006
  • 相关基金：国家自然科学基金（批准号：10974125 60808006 60821004和60978017）; 国家重点基础研究发展计划（批准号：2006CB921102）资助的课题~~
  • 相关项目：高精细度光学腔的控制及应用
作者： 张玉驰|郭龑强|杨榕灿|张鹏飞|李刚|王军民|张天才|
关键词： 光致原子解吸附, 磁光阱, 激光冷却与俘获, light-induced atom desorption, magneto-optical trap, laser cooling and trapping
中文摘要：

在获得光致原子解吸附（light-induced atom desorption,LIAD）效应的基础上,从理论和实验方面分析了LIAD对铯原子磁光阱装载的动力学过程的影响,特别是背景原子对磁光阱的影响.通过实验获得了不同光强和照射时间下关闭解吸附光后磁光阱中铯原子的衰减过程,理论模型定量地描述了背景铯原子造成压强的变化及其对最终平衡态下真空度的影响.该研究对中性原子的长时间俘获,有效控制磁光阱中原子的装载过程具有重要意义.

英文摘要：

The dynamics of magneto-optical trap loading by light-induced atom desorption （LIAD） are investigated theoretically and experimentally. The loading of the MOT has been described by a theoretical model. We have paid close attention to the background gases which are essentially important for the ultimate vacuum pressure. The experiment is done based on a glass cell and all the results are well in agreement with the theory. The decay process of the background vacuum pressure caused by the untrapped cesium atoms after shutting off the desorption light is explained quantitatively. The LIAD effect is proved to be an effective tool to control the loading of the MOT and the neutral single atoms in experiment.

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