Atomic clock system and vacuum packaging method

The invention provides an atomic clock system and a vacuum packaging method, the atomic clock system comprises a shell, a connecting assembly and a light path structure, the connecting assembly and the light path structure are both located in a closed cavity in the shell, the inner wall, forming the cavity, of the shell is provided with a first step part, and the light path structure is fixedly connected with the first step part through the connecting assembly. A gap is formed between the light path structure and the inner wall. According to the atomic clock system provided by the embodiment of the invention, the power consumption of the CPT atomic clock is reduced. 本申请提供一种原子钟系统及真空封装方法，其中，原子钟系统包括壳体、连接组件和光路结构，连接组件和光路结构均位于壳体内的密闭空腔中，壳体的形成空腔的内壁设有第一台阶部，光路结构通过连接组件与第一台阶部固定连接。光路结构与内壁之间具有间隙。本申请实施例提供的原子钟系统降低了CPT原子钟的功耗。