All-optical switching in 3,3'-diethyl-2,2'-thiatricarbocy-anine Iodide dye molecules

作     者：Parag Sharma Sukhdev Roy 

作者机构：Department of Physics & Computer ScienceDayalbagh Educational Institute 

出 版 物：《Optoelectronics Letters》 (光电子快报（英文版）)

年 卷 期：2009年第5卷第4期

页      面：251-255页

核心收录：

学科分类：070207[理学-光学] 07[理学] 0702[理学-物理学] 

主　　题：全光开关 激发态吸收 激光束传输 快速切换 高对比度 脉冲宽度 峰值波长 NAND 

摘      要：All-optical switching has been theoretically analyzed in the 3,3 -diethyl-2,2 -thiatricarbocyanine iodide(DTTCI) carbocyanine dye that exhibits large excited-state absorption to achieve high contrast and fast *** has been analyzed both ns and ps pump pulse *** is shown that there is an optimum value of concentration for given peak pump intensity at which maximum modulation can be *** can get 93.84% modulation of transmission of a CW probe laser beam at 532 nm at peak pumping intensity of 500 kW/cm2 at 763 nm,with ?t =1 ns and concentration of 80 μM in alcohol,resulting in switch-off and on time of 2 ns and 8 ns,*** results have been also used to design all-optical NOT and the universal NOR and NAND logic gates with multiple pump laser pulses.