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Observation of transient gain without population inversion in a laser-cooled rubidium lambda system

S. R. de Echaniz·Andrew D. Greentree·A. V. Durrant·D. M. Segal·J. P. Marangos·J. A. Vaccaro
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Abstract

We have observed clear Rabi oscillations of a weak probe in a strongly driven three-level lambda system in laser-cooled rubidium for the first time. When the coupling field is non-adiabatically switched on using a Pockels cell, transient probe gain without population inversion is obtained in the presence of uncoupled absorptions. Our results are supported by three-state computations.

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S. R. de Echaniz, Andrew D. Greentree, A. V. Durrant, D. M. Segal, J. P. Marangos, J. A. Vaccaro. 2001-05-17. Observation of transient gain without population inversion in a laser-cooled rubidium lambda system. https://doi.org/10.1103/physreva.64.055801

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