Abstract

The output of a mode-locked femtosecond laser is used for precision single-photon spectroscopy of Cs133 in an atomic beam. By changing the laser’s repetition rate, the cesium D1(6sS1226pP122) and D2(6sS1226pP322) transitions are detected and the optical frequencies are measured with accuracy similar to that obtained with a cw laser. Control of the femtosecond laser repetition rate by use of the atomic fluorescence is also implemented, thus realizing a simple cesium optical clock.

© 2005 Optical Society of America

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