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Detection of ultrahigh resonance contrast in vapor-cell atomic clocks

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Abstract

We propose and demonstrate a novel detection scheme of clock signals and obtain an ultrahigh resonance contrast up to 90%, which leads to the remarkable improvement of the precision of the signal-to-noise ratio. The frequency stability in terms of Allan deviation of the proposed detection scheme is improved by an order of magnitude under equivalent conditions.

© 2012 Optical Society of America

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