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Journal of the Optical Society of America B

Preservation of transverse spatial coherence in the storage of double light pulses

Xiaoxiao Wang, Aijun Li, Jiaxiang Sun, Yuan-Hang Sun, Yi Chen, Xiaojun Zhang, Lei Wang, Hai-Hua Wang, Jin-Yue Gao

Published Jun 4, 2015• 2 citations
Publisher

Abstract

We experimentally report on the preservation of transverse spatial coherence in the storage of double light pulses by using a solid. Under electromagnetically induced transparency, two probe pulses are stored into atomic coherence between ground-state levels and later retrieved. By analyzing the Young-type spatial interference patterns formed by two probe fields before and after the storage, we demonstrate that transverse spatial coherence of the probe fields is preserved in the storage process. This demonstration can be used for image processing and multiple information manipulation.

DOI
10.1364/josab.32.001318

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We experimentally study the generation and storage of double slow light pulses in a Pr～（3+）:Y2 SiO5 crystal.Under electromagnetically induced transparency,a single signal pulse is stored in the spin coherence of the crystal.By simultaneously switching on two control fields to recall the stored information,the spin coherence is converted into two slow light pulses with distinct frequencies.Furthermore,the storage and controlled retrieval of double slow light pulses are obtained by manipulating the control fields.This study of double slow light pulses may have practical applications in information processing and all-optical networks.
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