| 具有频率噪声的单模激光线性模型随机共振 |
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| 引用本文： | 张良英,金国祥,曹力.具有频率噪声的单模激光线性模型随机共振[J].物理学报,2011,60(4):44207-044207. |
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| 作者姓名： | 张良英 金国祥 曹力 |
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| 作者单位： | (1)华中科技大学物理学院,武汉 430074; (2)武汉工程大学智能机器人湖北省重点实验室,武汉 430073; (3)襄樊学院物理与电子工程学院,襄樊 441053 |
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| 基金项目： | 国家自然科学基金(批准号: 11045004),湖北省教育厅科研基金重点项目(批准号:D20101506)资助的课题. |
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| 摘 要： | 将频率有涨落的周期信号输入单模激光增益模型,计算出输出光强的相关函数及功率谱,对信噪比随噪声强度和系统参数的变化进行了研究. 结果表明:信噪比随频率噪声强度的变化、抽运噪声强度的变化、量子噪声强度的变化均出现随机共振;信噪比随增益系数和损失系数的变化也出现随机共振.
关键词：
频率噪声
功率谱
随机共振
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| 关 键 词： | 频率噪声 功率谱 随机共振 |
| 收稿时间： | 2010-05-24 |
Stochastic resonance with frequency noise in a linear model of single-mode laser |
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| Zhang Liang-Ying,Jin Cuo-Xiang,Cao Li.Stochastic resonance with frequency noise in a linear model of single-mode laser[J].Acta Physica Sinica,2011,60(4):44207-044207. |
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| Authors: | Zhang Liang-Ying Jin Cuo-Xiang Cao Li |
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| Institution: | School of Physics and Electronic Engineering, Xiangfan University, Xiangfan 441053, China;Hubei Province Key Laboratory of Intelligent Robot, Wuhan Institute of Technology, Wuhan 430073, China;School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | By adding a periodic signal of the fluctuating frequency to the gain-noise model of the single-mode lasers, we calculate the correlated function and power spectrum of the output laser intensity and discuss the variation of signal-to-noise ratio(SNR) with the intensity of the noise and system parameter. The result indicates that the SNR shows stochastic resonances with the variations of intensities of the frequency noise, pump noise and quantum noise, also with the variations of gain coefficient and loss coefficient. |
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| Keywords: | frequency noise power spectrum stochastic resonance |
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