Physics package based on intracavity laser cooling ^(87)Rb atoms for space cold atom microwave clock  

作　　者：邓思敏达 任伟 项静峰 赵剑波 李琳 张迪 万金银 孟艳玲 蒋小军 李唐 刘亮 吕德胜 Siminda Deng;Wei Ren;Jingfeng Xiang;Jianbo Zhao;Lin Li;Di Zhang;Jinyin Wan;Yanling Meng;Xiaojun Jiang;Tang Li;Liang Liu;Desheng Lü(Aerospace Laser Technology and System Department,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]Aerospace Laser Technology and System Department,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China [2]Mechanics,Chinese Academy of Sciences,Shanghai 201800,China [3]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Physics B》2024年第7期22-26,共5页中国物理B（英文版）

基　　金：Project supported by the Space Application System of China Manned Space Program;the Youth Innovation Promotion Association,CAS。

摘　　要：This article proposes a new physics package to enhance the frequency stability of the space cold atom clock with the advantages of a microgravity environment. Clock working processes, including atom cooling, atomic state preparation,microwave interrogation, and transition probability detection, are integrated into the cylindrical microwave cavity to achieve a high-performance and compact physics package for the space cold atom clock. We present the detailed design and ground-test results of the cold atom clock physics package in this article, which demonstrates a frequency stability of 1.2×10^(-12) τ^(-1/2) with a Ramsey linewidth of 12.5 Hz, and a better performance is predicted with a 1 Hz or a narrower Ramsey linewidth in microgravity environment. The miniaturized cold atom clock based on intracavity cooling has great potential for achieving space high-precision time-frequency reference in the future.

关 键 词：atomic clock MICROGRAVITY microwave cavity space station frequency stability 

分 类 号：V448[航空宇航科学与技术—飞行器设计]