Reduction of optical field noise by differential detection in atomic clocks based on coherent population trapping

Vladislav Gerginov; Svenja Knappe; Vishal Shah; John Kitching; Leo Hollberg

doi:10.1117/12.726893

5 March 2007 Reduction of optical field noise by differential detection in atomic clocks based on coherent population trapping

Vladislav Gerginov, Svenja Knappe, Vishal Shah, John Kitching, Leo Hollberg

Author Affiliations +

Proceedings Volume 6604, 14th International School on Quantum Electronics: Laser Physics and Applications; 66040J (2007) https://doi.org/10.1117/12.726893
Event: 14th International School on Quantum Electronics: Laser Physics and Applications, 2006, Sunny Beach, Bulgaria

Abstract

We present preliminary results showing that some noise sources in vapor cell atomic clocks based on coherent population trapping (CPT) can be suppressed with differential detection. The scheme we propose differs from more conventional differential detection in that both optical fields pass through the alkali vapor cell but have different polarizations, one circular and one linear. Because CPT resonances are only excited by the circularly polarized beam, the linearly polarized beam can be used to reduce several important sources of noise. With this technique, we demonstrate reduction of the short-term frequency instability of a CPT atomic frequency reference by a factor of about 1.5.

Citation Download Citation

Vladislav Gerginov, Svenja Knappe, Vishal Shah, John Kitching, and Leo Hollberg "Reduction of optical field noise by differential detection in atomic clocks based on coherent population trapping", Proc. SPIE 6604, 14th International School on Quantum Electronics: Laser Physics and Applications, 66040J (5 March 2007); https://doi.org/10.1117/12.726893

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available