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Proceedings Paper

End-resonance clock and all-photonic clock
Author(s): Yuan-Yu Jau; William Happer; Fei Gong; Alan Braun; Martin Kwakernaak
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Paper Abstract

The end-resonance clock uses strong hyperfine end transition to stabilize the frequency of the local oscillator. Comparing to the conventional 0-0 atomic clock, end resonance has very small spin-exchange broadening effect. The spin-exchange rate is proportional to the number density of the alkali-metal atoms. By using the end resonance, we are able to use very high dense vapor to obtain a much better signal to noise ratio. On the other hand, the end resonance suffers from the first-order magnetic field dependence. This problem, however, can be solved by simultaneously using a Zeeman end resonance to stabilize the magnetic field. Here, we report the most recent result of the end-resonance clock. In addition, we report a whole new technique, push-pull laser-atomic oscillator, which can be thought as all-photonic clock. This new clock requires no local oscillator. It acts like a photonic version of maser, which spontaneously generates modulated laser light and modulated voltage signals. The modulation serves as the clock signal, which is automatically locked to the ground-state hyperfine frequency of alkali-metal atoms.

Paper Details

Date Published: 31 January 2008
PDF: 10 pages
Proc. SPIE 6906, Quantum Electronics Metrology, 69060E (31 January 2008); doi: 10.1117/12.773803
Show Author Affiliations
Yuan-Yu Jau, Princeton Univ. (United States)
William Happer, Princeton Univ. (United States)
Fei Gong, Princeton Univ. (United States)
Alan Braun, Sarnoff Corp. (United States)
Martin Kwakernaak, Sarnoff Corp. (United States)

Published in SPIE Proceedings Vol. 6906:
Quantum Electronics Metrology
Alan E. Craig; Selim M. Shahriar, Editor(s)

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