柱型积分球空心光束激光冷却铷原子研究

Diffuse light cooling of Rubidium atoms in a cylindrical cavity with dark hollow beam will increase the cold atom number in the detectiing zone, as well as decreasing the cold atom number around it, which will improve the signal to noise ratio and contrast. These results are important in improving the perfomance of cold atom clocks. Compact cold atomic clocks for on-board systems have been one of the hot topics at the forefront of atomic clock research, and atomic clock based on integrating sphere cooling becomes one of the better candidates for the future generations.Therefore, the investigation of physical mechanisms and novel experimental techniques related to this issue is of great scientific and practical importance.

本项目研究空心光束在积分球内形成漫反射光场来冷却铷原子，利用空心光束特有的光场结构，增加探测轴线的冷原子密度同时减少轴线周边的冷原子分布，从而提高探测信号的信噪比和对比度，这对优化积分球冷原子钟性能如稳定度指标具有重要意义。小型化星载冷原子钟已成为当前原子钟研究的前沿课题之一，而基于积分球冷却的原子钟体积小、重量轻、稳定性好，非常有潜力发展为新一代星载原子钟。因此，对积分球冷却相关物理机制和新的实验技术做深入探索有重要的科学意义和应用价值。

本项目研究空心光束在积分球内形成漫反射光场来冷却铷原子，利用空心光束特有的光场 结构，增加探测轴线的冷原子密度同时减少轴线周边的冷原子分布，从而提高探测信号的信噪比和对比度。同时，这对优化积分球冷原子钟性能如稳定度指标具有重要意义。小型化星载冷原子钟已成为当前原子钟研究的前沿课题之一，而基于积分球冷却的原子钟体积小、重量轻、稳定性好，非常有潜力发展为新一代星载原子钟。因此，对积分球冷却相关物理机制和新的实验技术做深入探索有重要的科学意义和应用价值。