Progress of a compact microwave clock based on atoms cooled with a diffractive optic
Abstract
An atomic clock based on a compact source of cold atoms and coherent population trapping (CPT) is an encouraging goal for future low-volume atomic frequency references. Our experiment seeks to investigate the performance of such a system by applying CPT in a high-contrast lin⊥lin polarisation scheme to our 87Rb grating magneto optical trap (GMOT) apparatus. In this paper, we report on our progress of improving short- term stability of our cold-atom CPT apparatus. Our recent measurements have shown a short-term stability of 5 x 10-11/√τ, with the ability to average down for times τ>100s.
- Publication:
-
Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology II
- Pub Date:
- February 2020
- DOI:
- 10.1117/12.2552587
- Bibcode:
- 2020SPIE11296E..09E