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Published June 24, 1991 | public
Journal Article Open

Nonlinear spectroscopy of cold atoms in a spontaneous-force optical trap


Probe-wave amplification and absorption spectra are reported for cesium atoms cooled and confined in a Zeeman-shift spontaneous-force optical trap. Novel spectral features are observed with narrow frequency widths and with single-pass gain of 20% in some cases. Negative radiation pressure is demonstrated as the mechanical consequence of optical gain and is investigated as a possible means for optical implosion of a trapped sample.

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©1991 The American Physical Society. Received 5 December 1990. This work was supported by the National Science Foundation, by Venture Research International, by the Office of Naval Research, and by the Conselho Nacional de Pesquisa-Brasil (J.W.R.T). We are grateful to Professor C. Wieman and Professor T. Walker whose generosity helped to initiate this program and to Professor K. Libbrecht for important contributions.


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