Stochastic resonance for modulated gain in a single-mode laser

被引：12
作者：
Wang, J
Ma, XY
Cao, L
Wu, DJ
机构：
[1] Chinese Acad Sci, Inst Semicond, Natl Engn Res Ctr Optoelect Dev, Beijing 100083, Peoples R China
[2] Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China
[3] CCAST, World Lab, Beijing 100080, Peoples R China
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2006年 / 359卷
基金：
中国国家自然科学基金;
关键词：
stochastic resonance; signal-modulated gain; quantum noise; pump noise; signal-to-noise ratio;
D O I：
10.1016/j.physa.2005.05.104
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Stochastic resonance (SR) induced by the signal modulation is investigated, by introducing the signal-modulated gain into a single-mode laser system. Using the linear approximation method, we detailedly calculate the signal-to-noise ratio (SNR) of a gain-noise model of the single-mode laser, taking the cross-correlation between the quantum noise and pump noise into account. We find that, SR appears in the dependence of the SNR on the intensities of the quantum and the pump noises when the correlation coefficient between both the noises is negative; moreover, when the cross-correlation between the two noises is strongly negative, SR exhibits a resonance and a suppression versus the gain coefficient, meanwhile, the single-peaked SR and multi-peaked SR occur in the behaviors of the SNR as functions of the loss coefficient and the deterministic steady-state intensity. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：98 / 106
页数：9
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