一种新型金属配位聚合物皮秒光限幅特性研究  

Study on optical limiting properties of the novel metal coordination polymers at pico-second pulse

作　　者：常存[1] 杜艳秋[1] 叶红安[1] 常青[1] 

机构地区：[1]黑龙江大学电子工程学院,黑龙江哈尔滨150080

出　　处：《黑龙江大学自然科学学报》2005年第5期685-687,共3页Journal of Natural Science of Heilongjiang University

基　　金：黑龙江省自然科学基金资助项目(F2004-08)

摘　　要：应用调Q倍频ns/ps Nd:YAG脉冲激光,在波长为532 nm,脉冲宽度为40 ps,重复频率为5 Hz的条件下,研究了溶于N,N-二甲基甲酰胺(DMF)中的一种新型金属配位聚合物[Co(NCS)2(CH3OH)2(3-bpfp)]n(3-bpfp=N,N-bis(3-pyridylformyl)piperazine)的光限幅特性,并用激发态理论模型对其限幅机制进行分析。实验结果表明这种配位聚合物的限幅阈值约为100mJ/cm2,其光限幅机制可能为激发态吸收。Optical limiting properties of a novel metal coordination polymers [Co（NCS）2 （CH3OH）2 （3-bpfp）] （3-bpfp=N, N＇ -bis （3-pyridylformyl） piperazine） dissolved in N, N -dimethyllformaide is investigated by using a Q switched, double frequency ns/ps Nd： YAG pulse laser system at wave length 532 nm with pulse width of 8 ns and repetition rate of 5Hz. The mechanism of optical limiting is analysed by using the model of excited-stated absorption model. The experiment results show that the limiting threshold of the metal coordination polymers is about to 100 mJ/cm^2, and the optical limiting effect of the metal coordination polymers maybe attributed to the excited-state absorption.

关 键 词：非线性光学 光限幅 金属配位聚合物 激发态吸收 

分 类 号：O437[机械工程—光学工程]