Effects of spontaneous emission-induced coherence on population inversion in a ladder-type atomic system

被引：47
作者：
Ma, HM
Gong, SQ [1 ]
Liu, CP
Sun, ZR
Xu, ZZ
机构：
[1] Acad Sinica, Shanghai Inst Opt & Fine Mech, Lab High Intens Opt, Shanghai 201800, Peoples R China
[2] E China Normal Univ, Key Lab Opt & Magnet Resonance Spect, Shanghai 200062, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2003年 / 223卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/S0030-4018(03)01572-4
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Spontaneous emission can create coherence in a ladder-type three-level atom with equispaced levels, subject to the condition that the atomic dipole moments are nonorthogonal. We study the effects of this kind of coherence on the steady-state population inversion in the atomic system. We show that the population inversion can be greatly enhanced on one of the optical transitions due to the spontaneous emission-induced coherence. Furthermore, we find, within suitable parameters regions, that such coherence can also lead to unexpected population inversion on both of the optical transitions. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：97 / 101
页数：5
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