宽光束反向传输全光开关的实验研究

Experimental Study of All-optical Switching using Counter propagation of Broad Beam

提出一种新型的光控光开关．利用倍频Ｎｄ：ＹＡＧ脉冲激光作为控制光束泵浦Ｃ６０溶液，形成瞬态透镜效应，使同时反方向通过样品的６３３ｎｍ宽光束的氦氖激光实现光开关．这种光开关响应快、开关对比度大、可完全避免控制光束的干扰．

We report a new type of all-optical stvitching. When a He--Ne laser broadprobe beam counterpropagates through transient lens in medium of C60 solutioninduced by using a Q-switcheed f reqtlcncy-double Nd:YAG pump beam, all opticalswitching is realized. The optical switching has rapid response and high contrastratio. This arrangement can avoicl interference of pump laser.