Abstract

We propose and demonstrate a mode-locked laser-type optical atomic clock with an optically pumped cesium (Cs) gas cell. By adopting the optically pumped Cs gas cell with a double resonance method as a frequency standard, we have successfully demonstrated an ultrastable rack-mount type Cs optical atomic clock with excellent short-term stability. The obtained frequency stabilities reached as high as 1.2×1012 for τ=1s and 8.8×1014 for τ=100s for a 9.1926GHz microwave output signal.

© 2007 Optical Society of America

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