实虚部关联的量子噪声和泵噪声对单模激光动力学性质的影响  

Effects of pump noise and quantum noise with real and imaginary parts correlated on the dynamic properties of a single-mode laser

作　　者：程庆华[1,2] 曹力[1] 吴大进[1] 王俊[1] 

机构地区：[1]华中科技大学激光技术国家重点实验室 [2]荆州师范学院物理系,荆州434100

出　　处：《物理学报》2004年第6期1675-1681,共7页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :10 2 75 0 2 5 )资助的课题~~

摘　　要：采用具有实虚部关联的量子噪声和泵噪声驱动的单模激光损失模型 ,用线性化近似方法研究了反映激光动力学性质的光强关联函数 ,讨论了光强关联函数随时间的演化 ;并对线性化近似方法的适用范围进行了详细分析 ,分别讨论了量子噪声强度、泵噪声强度、量子噪声实虚部关联系数对光强相对涨落的影响 ,得出在小噪声、远离阈值时 ,线性化近似方法适用范围扩大 ;小噪声、远离阈值且当量子噪声实虚部无关联时 ,线性化近似方法适用范围最大的结论 .Adopting the linear approximation method, a loss model for a single mode laser driven by pump noise and quantum noise whose real and imaginary parts are correlated is studied. We investigated the intensity correlation function, which describes the dynamic property of a laser and varies with time. Moreover, the valid range for the linear approximation method is obtained, and the effects of the intensities of the pump noise and quantum noise on the variance of the laser intensity, and the correlation coefficient between the real and imaginary parts of the quantum noise, are discussed in detail. We find that the valid range is extended in the case of small quantum noise and far form threshold, and it is the largest in the case of small quantum noise, far form threshold and no correlation between the real and imaginary parts of the quantum noise.

关 键 词：量子噪声 泵噪声 单模激光 光强关联函数 光强相对涨落 激光器理论 

分 类 号：TN248[电子电信—物理电子学]