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Journal of Optics B Quantum and Semiclassical Optics

The deceleration and storage of a light pulse in caesium vapour

Luming Li, Xiang Peng, Cheng Liu, Hong Mei Guo, Xuzong Chen

Published Jan 7, 2005• 3 citations
Publisher

Abstract

We report for the first time, according to our knowledge, an experiment in which a light pulse is decelerated to 2000 m s −1 and stored in a caesium vapour cell for a period of time without using a buffer gas. The storage time of the light can be up to 25 µs by adjusting the laser beam size to an appropriate value.
DOI
10.1088/1464-4266/7/2/002

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We report the storage of a spatial light grating in a sample of cold caesium atoms. The grating is stored in the atomic medium using a backward four-wave-mixing laser beam configuration with two counterpropagating control fields and a noncollinear probe field. The grating was stored during a controllable dark interval after which turning on the control fields alone resulted in a light pulse emission in the forward and backward probe beam directions. Grating storage times up to 4 µs were observed.
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