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Proceedings Paper

Optical Ramsey interference and its performance in D1 line excitation in rubidium vapor for implementation of a vapor cell clock
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Paper Abstract

Pulsed coherent population trapping in atomic vapor provides a convenient method for generating frequency narrowed atomic resonance using Ramsey interference. Here, we present our experimental results showing high-contrast and sub-kilohertz Ramsey interference fringes produced by coherently prepared 85Rb atoms using Raman excitation formed in D1 line transitions. A test system for atomic clock has been constructed to measure light shift for both continuous and pulsed Raman excitation cases. Our measurements show that light shift measured using pulsed Raman excitation, is reduced compared to the continuous excitation case. Our ability to measure light shift is currently limited by the resolution of the frequency counter, and performance of the locking electronics used.

Paper Details

Date Published: 17 February 2011
PDF: 12 pages
Proc. SPIE 7949, Advances in Slow and Fast Light IV, 794910 (17 February 2011); doi: 10.1117/12.880779
Show Author Affiliations
Gour S. Pati, Delaware State Univ. (United States)
Fredrik K. Fatemi, U.S. Naval Research Lab. (United States)
Mark Bashkansky, U.S. Naval Research Lab. (United States)
Selim M. Shahriar, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 7949:
Advances in Slow and Fast Light IV
Selim M. Shahriar; Philip R. Hemmer, Editor(s)

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