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Suppression of inhomogeneous broadening in rf spectroscopy of optically trapped atoms

Ariel Kaplan·Mikkel Fredslund Andersen·Nir Davidson
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Abstract

We present a novel method for reducing the inhomogeneous frequency broadening in the hyperfine splitting of the ground state of optically trapped atoms. This reduction is achieved by the addition of a weak light field, spatially mode-matched with the trapping field and whose frequency is tuned in-between the two hyperfine levels. We experimentally demonstrate the new scheme with Rb 85 atoms, and report a 50-fold narrowing of the rf spectrum.

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Ariel Kaplan, Mikkel Fredslund Andersen, Nir Davidson. 2002-04-28. Suppression of inhomogeneous broadening in rf spectroscopy of optically trapped atoms. https://doi.org/10.1103/physreva.66.045401

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