Kerr nonlinearity and optical multi-stability in a four-level Y-type atomic system

被引：18
|
作者：
Sahrai, M. [1 ]
Hamedi, H. R. [1 ]
Memarzadeh, M. [1 ]
机构：
[1] Univ Tabriz, Res Inst Appl Phys & Astron, Tabriz, Iran
来源：
JOURNAL OF MODERN OPTICS | 2012年 / 59卷 / 11期
关键词：
optical bistability; Kerr nonlinearity; quantum interference; SPONTANEOUSLY GENERATED COHERENCE; BISTABILITY; MULTISTABILITY;
D O I：
10.1080/09500340.2012.691561
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The nonlinear response to applied fields of a four-level Y-type atomic system is investigated. The effect of laser intensity and quantum interference induced by spontaneous emission on optical bistability, optical multi-stability and Kerr nonlinearity is then discussed. It is found that the threshold of the optical bistability can substantially be reduced by the quantum interference. So, an enhanced Kerr nonlinearity with reduced absorption can be achieved.
引用
收藏
页码：980 / 987
页数：8
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