Miniaturized atomic beam clock physics system and clock generation method
By miniaturizing the atomic beam clock physical system and utilizing the dual-beam CPT effect and phase interference, the problem of insufficient long-term stability of chip-level atomic clocks has been solved, realizing a highly stable and low-power atomic beam clock suitable for compact clock applications.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HUAZHONG PHOTOELECTRIC TECH INST (CHINA SHIPBUILDING IND CORP THE NO 717 INST)
- Filing Date
- 2024-12-27
- Publication Date
- 2026-07-02
AI Technical Summary
Existing chip-scale atomic clocks have shortcomings in long-term stability. Factors such as buffer gas aging and thermal drift lead to performance degradation, and the large device size makes them unsuitable for widespread application.
A miniaturized atomic beam clock physical system is employed, including an alkali metal atom emission cavity, a microcapillary array, a drift cavity, a multilayer silicon substrate, a laser, a fiber-optic phase modulator, a beam splitter, and a signal detector. Through the action of dual-beam CPT and phase interference, Ramsey-CPT spectral lines are collected as frequency discrimination signals to achieve frequency servo locking and reduce frequency errors.
It improves the stability of atomic beam clocks, achieves narrower fluorescence spectral width and high long-term frequency stability, has chip-based capability, reduces power consumption, and is suitable for low-power and compact applications.
Smart Images
Figure CN2024143065_02072026_PF_FP_ABST