加性信号输入时双模激光光强关联函数的演化  

Time evolution of the intensity correlation function in a two-mode laser with an additive input signal

作　　者：杨明[1] 叶庆[1] 

机构地区：[1]华中科技大学物理系,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2008年第3期61-64,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：湖北省自然科学基金资助项目(2005ABA051)

摘　　要：运用线性化近似方法计算了周期性信号加性输入时激光系统的光强关联函数,讨论了激光系统中输入信号、泵噪声强度、量子噪声强度、净增益系数以及交叉耦合系数变化时对光强关联函数随时间演化的不同影响.发现演化时间较短时,光强关联函数随时间的演化会出现单极值、双极值、一短时平台等形式;演化时间较长时,会出现稳定性周期振荡.By using the linear approximation method, the intensity correlation function of laser system with an input additive periodic signal was calculated. The different influences on time evolution of the intensity correlation function of the input signal, the intensity of the pump noise as well as that of the quantum noise, net gain coefficients and parameters of cross-coupling were discussed. It is seen that the time evolution of the intensity correlation function will exhibit various forms when the time is short, the appearance of single extremum, two extremums and short-time flat. It is also found that there may appear the state of stable periodic surging when the time gets larger.

关 键 词：双模激光 噪声 耦合系数 光强关联函数 

分 类 号：O414.2[理学—理论物理]