Large Enhancement of Probe Amplification with Population Inversion in a Four-Level Atomic System with Vacuum-Induced Coherence

被引：0
作者：
LI Jia--Hua
YANG Wen-Xing
LUO Jin--Ming
PENG Ju-Cun Department of Physics
机构：
来源：
CommunicationsinTheoreticalPhysics | 2005年 / 43卷 / 05期
基金：
中国国家自然科学基金;
关键词：
probe absorption-amplification; population inversion; vacuum-induced coherence;
D O I：
暂无
中图分类号：
O431.2 [量子光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, we discuss and analyze theoretically probe absorption-amplification response in a four-levelcoherent atomic system with vacuum-induced coherence via changing the sign of the parameter f, with f denotingthe ratio of a pair of dipole moments associated with a doublet of closely upper hyperfine sublevels. We find that theamplitude of the probe amplification for the case f=-1 can be about one order of magnitude larger than that achievablefor the case f=1. In addition, with respect to the case f=-1 the probe amplification can be maintained all the timewith weak incoherent pumping for a wide range of the probe detuning.
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收藏
页码：905 / 909
页数：5
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