Optical switch phenomenon in a self-defocusing medium  

作　　者：李华刚 罗质华 

机构地区：[1]Department of Physics,Guangdong Education Institute

出　　处：《Chinese Optics Letters》2009年第5期421-423,共3页中国光学快报（英文版）

摘　　要：A spatial optical switch phenomenon caused by the induced focusing of a weak probe beam occurring in self-defoeusing nonlinear media is discussed theoretically. A weak beam is induced to focus when it copropagates with an intense pump beam under the conditions that the probe and pump beams peak at different positions and propagate in different directions. Due to the effect of cross-phase modulation, the weak beam can not only be focused but also be deflected. The phenomenon is discussed by numerically solving the coupled amplitude equations.A spatial optical switch phenomenon caused by the induced focusing of a weak probe beam occurring in self-defoeusing nonlinear media is discussed theoretically. A weak beam is induced to focus when it copropagates with an intense pump beam under the conditions that the probe and pump beams peak at different positions and propagate in different directions. Due to the effect of cross-phase modulation, the weak beam can not only be focused but also be deflected. The phenomenon is discussed by numerically solving the coupled amplitude equations.

关 键 词：Probes 

分 类 号：O437.5[机械工程—光学工程]