Quantum interference effect on spontaneous emission spectrum in a doubly driven M-type atom

被引：14

作者：

Dutta, Bibhas Kumar ^{[1
]}

Mahapatra, Prasanta Kumar ^{[1
]}

机构：

[1] Vidyasagar Univ, Dept Phys & Technophys, Midnapore 721102, India

来源：

OPTICS COMMUNICATIONS | 2009年 / 282卷 / 04期

关键词：

Doubly driven M-type atom; Decay-interference; Dynamically induced interference; Spectral line enhancement and narrowing; Spectral line shifting; Suppression of spectral line and spontaneous emission quenching; GENERATED COHERENCE; INDUCED TRANSPARENCY; STATE; PHASE; ABSORPTION; LASERS; FIELD;

D O I：

10.1016/j.optcom.2008.10.069

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An M-type atomic system with two closely spaced upper levels interacting with the same modes of the vacuum radiation field exhibits the interference effect between the spontaneous decay channels. The phenomenon of this decay-interference along with the dynamically induced quantum interference created in the system by two coherent fields can change significantly the spontaneous emission spectrum. Our results highlight large enhancement of ultranarrow spectral components within the spontaneous emission line shape in various conditions. We have shown the occurrence of two contradistinctive phenomena: compression of two spectral lines towards their mid-position and the spreading of two lines away from each other under different dynamic conditions. The phenomenon of suppression of spectral line and the quenching of spontaneous emission have also been focused. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：594 / 600

页数：7

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