光学多稳态系统及频率特性  

The Nonlinear Optical Multi-Stable System and Characteristics of Frequency

作　　者：李海[1] 刘金龙[1] 熊万杰[1] 刘慧[1] 

机构地区：[1]华南农业大学理学院,广东广州510642

出　　处：《华南农业大学学报》2008年第2期118-121,共4页Journal of South China Agricultural University

基　　金：华南农业大学校长基金(4900-k06319)

摘　　要：从光学多稳态及放大的普适动力学模型和聚丁二炔的非线性极化率出发,着重数值分析了阶跃脉冲高度对光学多稳态动态特性的响应以及与频谱的关系.通过数值分析可以看出,不同的输入脉冲高度,影响多稳态输出,要得到稳定输出,必须选择合适的激发脉冲强度.讨论了无注入信号的激光稳态输出条件及其频率牵引效应.这些研究结果对这种材料的激光多稳态器件具有重要意义.According to the generalized model of the optical multi-stable and the nonlinear susceptibility of the polydiacetylenes（PDAs） , the relationship between the transient course and the characteristics of frequency is discussed at different impulse intensity. Numerical analysis showed that the intensity of impulse intensity step signal affects the output signal. An appropriate impulse intensity must be chosen to obtain the stability output. The condition of laser system and its frequency pulling effect were analysised without incident driving field. The results obtained should be of certain significance for understanding organic polymer optical multi-stable lasing devices.

关 键 词：光学多稳态 三能级系统 动态响应 非线性极化率 频率牵引 

分 类 号：O431[机械工程—光学工程] O437[理学—光学]