两台耦合受调制的激光器的混沌同步  

Chaotic Synchronization of Two Modulated-coupling Lasers

作　　者：孙坚[1] 

机构地区：[1]苏州科技学院应用物理系,江苏苏州215009

出　　处：《苏州科技学院学报（自然科学版）》2006年第1期45-47,57,共4页Journal of Suzhou University of Science and Technology （Natural Science Edition）

基　　金：江苏省自然科学基金项目(BK2001138)

摘　　要：通过数值模拟对两台空间耦合受到调制的单模激光器系统的动力学行为进行研究。根据激光之间空间耦合作用的调制频率,讨论并分析了激光系统中强度与调制频率之间的关系。数值研究表明:在一定的参数范围内,尤其是耦合强度在一定频率范围内受到调制,激光强度可以实现混沌同步。通过对功率谱和李雅普诺夫指数的分析,可以确信所研究的激光系统处于混沌状态。The dynamics properties of two modulated-coupling single-mode lasers system are analyzed by numerical simulation. Based on the modulated frequency of the spatially overlapping between two lasers, the relationship between the laser intensity and modulated frequency is discussed. The result shows that the intensities of such two lasers can reach the state of chaotic synchronization in the suitable parameters, especially when the coupling strength is modulated in the range of frequency. Through the analysis of the power spectra and the Lyapunov exponent, it can be convinced that the laser system studied is in a chaotic state.

关 键 词：混沌同步 耦合强度 调制 李雅普诺夫指数 

分 类 号：O437.4[机械工程—光学工程]