周期信号调制色泵噪音驱动下单模激光光强关联函数的时间演化特性  

Time Evolution Properties of Intensity Correlation Function of Single Mode Laser Driven by Periodic Signal Modulating Coloured-pump Noises

作　　者：桂堤[1] 徐大海[1] 程庆华[1] 

机构地区：[1]长江大学物理科学与技术学院,湖北荆州434023

出　　处：《光子学报》2012年第5期541-546,共6页Acta Photonica Sinica

基　　金：国家自然科学基金(No.61106127)资助

摘　　要：采用周期信号调制色泵噪音驱动的单模激光模型,运用线性化近似方法研究了单模激光系统光强关联函数C(t)随时间的演化关系,分析了调制信号的振幅B、频率Ω等对光强关联函数随时间演化的影响.发现在泵噪音自关联时间τ<<1的情形下,随着调制信号频率Ω、振幅B的增加,C(t)随时间的演化为单调衰减;在τ>>1的情形下,随着调制信号频率Ω、振幅B的增加,C(t)随时间的演化均为周期性振荡衰减.Using the linear approximation method,the intensity correlation function C(t) of a single mode laser system was calculated and the time evolution of C(t) was researched as well as the influence of modulation signal frequency Ω and amplitude B on C(t) was analysed in detail.In the case of the pump noise self-correlation time τ<<1,it was found that when modulation signal frequency Ω and amplitude B increase,the time evolution of C(t) experiences monotonous descending;however,in the case of τ>>1,as modulation signal frequency Ω and amplitude B increasing,the time evolution of C(t) exhibits periodically surging with descending envelope.

关 键 词：单模激光 光强关联函数 噪音 自关联时间 

分 类 号：O431.2[机械工程—光学工程]