Giant Kerr nonlinearity in a four-level atomic medium

被引：33
|
作者：
Hamedi, Hamid Reza [2 ]
Asadpour, Seyyed Hossein [1 ]
Sahrai, Mostafa [2 ]
机构：
[1] Islamic Azad Univ, Bandar Anzali Branch, Bandar Anzali, Iran
[2] Univ Tabriz, Res Inst Appl Phys & Astron, Tabriz, Iran
来源：
OPTIK | 2013年 / 124卷 / 04期
关键词：
Kerr nonlinearity; Linear and nonlinear absorption; Electromagnetically induced transparency; SPONTANEOUSLY GENERATED COHERENCE; GAIN;
D O I：
10.1016/j.ijleo.2011.12.049
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The linear and nonlinear response of a driven four-level A-type atomic system with two fold lower-levels with three driving fields is investigated. It is found that the giant Kerr nonlinearity can be achieved just by tuning the intensity of coupling fields. Maximal Kerr nonlinearity with zero linear and nonlinear absorption enters the EIT window. Also it is found that the relative phase between applied fields can change the Kerr nonlinearity behavior. (C) 2012 Elsevier GmbH. All rights reserved.
引用
收藏
页码：366 / 370
页数：5
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