Abstract
The laser cooling and trapping of atoms has become routine in many laboratories around the world.1 Using only a relatively simple setup it is possible to prepare atomic samples with ensemble temperatures below 20 μK and densities of greater titan 1011 cm-3 in a low-collision environment. These are ideal conditions for high-resolution laser spectroscopy. The corresponding velocities in the cm/sec range also allow interaction times long enough that transit time broadening is insignificant even in situations where a small interaction volume is desirable. Broadening resulting from environmental influences and collisional effects is negligible.
© 1996 Optical Society of America
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