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arXiv · 1106.0988

Enhancing electromagnetically-induced transparency in a multilevel broadened medium

M. Scherman·O. S. Mishina·P. Lombardi·E. Giacobino·J. Laurat
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Abstract

Electromagnetically-induced transparency has become an important tool to control the optical properties of dense media. However, in a broad class of systems, the interplay between inhomogeneous broadening and the existence of several excited levels may lead to a vanishing transparency. Here, by identifying the underlying physical mechanisms resulting in this effect, we show that transparency can be strongly enhanced. We thereby demonstrate a 5-fold enhancement in a room-temperature vapor of alkali-metal atoms via a specific shaping of the atomic velocity distribution.

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M. Scherman, O. S. Mishina, P. Lombardi, E. Giacobino, J. Laurat. 2011-06-06. Enhancing electromagnetically-induced transparency in a multilevel broadened medium. https://doi.org/10.1364/oe.20.004346

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