加性信号调制下指数形式关联噪声驱动的单模激光的光强关联时间  

Intensity Correlation Time of a Single-Mode Laser Driven by Two White Noises with Colored Cross-Correlation with an Additive Signal Modulation

作　　者：陈黎梅[1] 曹力[2] 吴大进[3] 

机构地区：[1]深圳大学物理教育系,深圳518060 [2]华中科技大学激光技术国家重点试验室,武汉430074 [3]中国高等科学技术中心(世界实验室)

出　　处：《光子学报》2005年第6期885-888,共4页Acta Photonica Sinica

基　　金：国家自然科学基金资助项目(批准号:10275025)

摘　　要：采用线性化近似,计算了加性信号调制下的由具有指数关联的两白噪声驱动的单模激光增益模型的光强关联时间.发现两噪声间关联程度对光强关联时间随噪声强度的变化曲线有很大的影响,两噪声间关联程度取不同值时,光强关联时间随噪声强度的变化曲线中将出现极大值(即出现共振)或极小值(即出现抑制).By using the linear approximation method, the intensity correlation time is studied for gain-noise model of a single-mode laser driven by white pump noise and white quantum noise with colored cross-correlation. It is detected that the noise correlation coefficient has a great effect on the curves of the intensity correlation time upon the noise intensities. When the noise correlation coefficient is positive, there exist maximum (i.e., resonance) in the curves of the intensity correlation time upon the noise intensities. When the noise correlation coefficient is negative, there exist minimum (i.e., suppression) in the curves of the intensity correlation time upon the noise intensities. And when the noise correlation coefficient is zero, there are neither maximum nor minimum in the curves, the intensity correlation time increases monotonously with the increasing of the noise intensities. Furthermore, the effect of the cross-correlation time, the attenuation coefficient and the signal frequency on the intensity correlation time is also discussed.

关 键 词：光强关联时间 加性信号调制 指数形式关联噪声 线性化近似 

分 类 号：O410[理学—理论物理]