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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
【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。
【Abstract】 Optical limiting properties of a novel metal coordination polymers [Co(NCS)2(CH3OH)2(3-bpfp)]n(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/cm2,and the optical limiting effect of the metal coordination polymers maybe attributed to the excited-state absorption.
【Key words】 nonlinear optics; optical limiting; metal coordination polymers; excited state absorption;
- 【文献出处】 黑龙江大学自然科学学报 ,Journal of Natural Science of Heilongjiang University , 编辑部邮箱 ,2005年05期
- 【分类号】O437
- 【下载频次】128