Controlling the optical bistability via quantum interference in a four-level N-type atomic system

被引：40
|
作者：
Sahrai, M. [1 ]
Asadpour, S. H. [1 ]
Mahrami, H. [2 ]
Sadighi-Bonabi, R. [3 ]
机构：
[1] Univ Tabriz, Res Inst Appl Phys & Astron, Tabriz, Iran
[2] Bonab Higher Complex Educ, Bonab, Iran
[3] Sharif Univ Technol, Dept Phys, Tehran, Iran
来源：
JOURNAL OF LUMINESCENCE | 2011年 / 131卷 / 08期
关键词：
Optical bistability; Spontaneously generated coherence; SPONTANEOUSLY GENERATED COHERENCE; INDUCED TRANSPARENCY; PHASE-CONTROL; MULTISTABILITY; AMPLITUDE;
D O I：
10.1016/j.jlumin.2011.03.050
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate the optical bistability (OB) and optical multi-stability (OM) in a four-level N-type atomic system. The effect of spontaneously generated coherence (SGC) on OB and OM is then discussed. It is found that SGC makes the medium phase dependent, so the optical bistability and multi-stability threshold can be controlled via relative phase between applied fields. We realize that the frequency detuning of probe and coupling fields with the corresponding atomic transition plays an important role in creation OB and OM. Moreover, the effect of laser coupling fields and an incoherent pumping field on reduction of OB and OM threshold is then discussed. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1682 / 1686
页数：5
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