Abstract
We describe a high-performance optical frequency reference based on dual-frequency sub-Doppler spectroscopy (DFSDS) using a Cs vapor microfabricated cell and an external-cavity diode laser at 895 nm. Measured against a reference optical signal extracted from a cavity-stabilized laser, the microcell-stabilized laser demonstrates an instability of 3 × 10−13 at 1 s, in agreement with a phase noise of +40 dBrad2/Hz at 1-Hz offset frequency, and below 5 × 10−14 at 102 s. The laser short-term stability limit is in good agreement with the intermodulation effect from the laser frequency noise. These results suggest that DFSDS is a valuable approach for the development of ultra-stable microcell-based optical standards.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
A. Gusching, M. Petersen, N. Passilly, D. Brazhnikov, M. Abdel Hafiz, and R. Boudot
J. Opt. Soc. Am. B 38(11) 3254-3260 (2021)
Clément Carlé, Moustafa Abdel Hafiz, Shervin Keshavarzi, Rémy Vicarini, Nicolas Passilly, and Rodolphe Boudot
Opt. Express 31(5) 8160-8169 (2023)
Sanglok Lee, Geol Moon, Sang Eon Park, Hyun-Gue Hong, Jae Hoon Lee, Sangwon Seo, Taeg Yong Kwon, and Sang-Bum Lee
Opt. Lett. 48(4) 1020-1023 (2023)