激发态质子转移型有机分子7-羟基喹啉的光开关效应

本文研究了质子转移型有机分子７－羟基喹啉在皮秒激光脉冲作用下的光开关现象。实验结果表明７－羟基喹啉在３５５ｎｍ的皮秒光脉冲的作用下对４８８ｎｍ和６３２．８ｎｍ的光有明显的开关效应，而在５３２ｎｍ的皮秒光脉冲的作用下无此效应。产生开关效应的原因是由于７－羟基喹啉分子在激光态质子转移过程中生成的阳离子和阴离子具有较大的光学非线性。

Investigation on Optical Switch Effect of 7-hydroxyquinoline with Excited State Proton Transfer

Optical switch phenomenon of 7-hydro xyquinoline with excited state proton transfer effect was investigated using pic osecond laser pulses.Experiment results show that 7-hydroxyquinoline could shu t down laser at 488 nm and 632.8 nm under the action of picosecond laser pu lses at 355 nm but nothing happened under the action of picosecond laser pulses at 532 nm.It originates from large nonlinearity of anion and cation formed in ex cited state proton transfer of 7-hydroxyquinoline.