光学双稳与混沌实验  

Experiment of optical bistability and chaos

作　　者：孙萍[1] 尤秉信[1] 

机构地区：[1]北京师范大学物理系,北京100875

出　　处：《物理实验》2010年第9期1-6,共6页Physics Experimentation

摘　　要：借助自主研制的"液晶光电混合型光学双稳与混沌系统"研究了光学双稳态与混沌运动的一般规律.在有反馈的条件下,对于1个入射光强,存在着2个不同的透射光强,并以滞后迴线形式为特征,即系统呈现双稳态.依然在有反馈的条件下,系统的运动状态随着延迟时间的增加,由周期振荡、倍周期分岔演化到混沌,而且,混沌对于初始值具有高度敏感性.The general law of optical bistability and chaos of liquid crystal is studied by means of photoelectric system. Under the condition of feedback, the system has two output corresponding to an input and shows the characteristic of lag loop-line namely bistability. Further more, the system evolves from period and multi-period into chaos as delay increases. The chaos also shows the initialization sensitivity. Teaching practice demonstrates that the experiment of optical bistability and chaos is important to cultivate cognization and improve scientific quality of students.

关 键 词：双稳态 混沌 液晶 光电混合型 初值敏感性 

分 类 号：O415[理学—理论物理]