Gain and Absorption of a Probe Light in an Open Tripod Atomic System

We theoretically investigate an open four-level atomic system interacting with control, probe and microwave fields. When there is no repumping light and a microwave field is applied, the probe light can be absorbed or amplified, which has different features than those of a system whose populations a...

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Bibliographic Details
Published in:Chinese physics letters 2012-05, Vol.29 (5), p.54207-1-054207-4
Main Authors: Hu, Zheng-Feng, Lin, Jin-Da, Deng, Jian-Liao, He, Hui-Juan, Wang, Yu-Zhu
Format: Article
Language:English
Subjects:
Amplification
Control systems
Gain
Ground state
Microwaves
Population distribution
Switches
Tripods
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Summary:We theoretically investigate an open four-level atomic system interacting with control, probe and microwave fields. When there is no repumping light and a microwave field is applied, the probe light can be absorbed or amplified, which has different features than those of a system whose populations are pumped into only one ground state. In this system the microwave field and the population distributions of the ground states can be used as switches to control the propagation of the probe light.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/29/5/054207