JING Yan-feng1,2, YAN Shu-bin1, QIN Li1, REN Xiao-hong1

(1. National Key Laboratory For Electronic Measurement Technology, North University of China, Taiyuan 030051, China;

2. Chang Zhi Medical College, Changzhi, Shanxi 046000, China) 

Abstract:The alkali vapor cell is the main of the physical package of the CPT atomic clocks. The traditional glass-blowing techniques are not applicable to the cell of micro atomic clocks, and we must fabricate the miniature vapor cell with novel methods. This article describes some technologies of fabricating the vapor cell, such as MEMS technology combining glass-blowing method, hollow fiber nested method and MEMS method, and the approaches for filling the cell with alkali atoms and buffer gas.

Key words:micro atomic clocks; vapor cell; alkali metal; buffer gas