Abstract

Stabilization of a laser to an optical-clock transition has been demonstrated using Ramsey’s phase-modulation technique. The technique was implemented using a 674nm laser and a component of the 5sS1224dD522 optical clock transition in a single Sr+88 ion. The lock performance observed was consistent with the short-term stability of the local oscillator. Compared with existing frequency-modulation stabilization schemes, this technique offers advantages for use in single-ion optical clocks through its possible increased resolution and the ability to conveniently compensate known systematic shifts.

© 2006 Optical Society of America

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