Abstract
Magnesium belongs to the few elements suitable for an optical frequency standard with neutral atoms. It displays very attractive features such as a low black body radiation shift, long-lived states or the existence of a magic wavelength, which is required for a lattice clock. The current optical frequecy standard based on neutral magnesium shows a stability of 8*10−14 in Is and a spectroscopic resolution of 290 Hz [1], which is limited by the atomic sample temperature of 4 mK. These temperatures are obtained in a magneto-optical trap (MOT) based on the strong cooling transition 1S0→1P1.
© 2007 IEEE
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