文献类型：期刊文献

中文题名：Bi-photonic transient gratings in bulk azo-dye containing poly（methyl methacrylate） matrix

英文题名：Bi-photonic transient gratings in bulk azo-dye containing poly (methyl methacrylate) matrix

作者：Luo, Duanbin[1]; Deng, Li[2]

机构：[1] Department of Physics, East China University of Science and Technology, Shanghai 200237, China; [2] Key Laboratory of Optical and Magnetic Resonance Spectroscopy, East China Normal University, Shanghai 200062, China

年份：2005

卷号：3

期号：9

起止页码：542

中文期刊名：Chinese Optics Letters

外文期刊名：Chinese Optics Letters

收录：CSTPCD;;EI(收录号：2005429423758);Scopus;CSCD:【CSCD2011_2012】；PubMed;

语种：英文

中文关键词：Amorphous materials;Holographic optical elements;Matrix algebra;Polarization

外文关键词：Amorphous materials - Holographic optical elements - Matrix algebra - Polarization

摘要：Amorphous bulk composites were prepared by doping azo-dye disperse red 1 （DR1） in poly（methyl methacrylate） （PMMA） matrices. Photoinduced anisotropy of such kind of bulk polymer material was investigated experimentally by measuring the dichroism when irradiating with linearly polarized green light with different polarization direction. With the interaction of bi-photonic beams at 514 and 632.8 nm, transient gratings in the bulk composites could be established, which was a kind of population gratings of trans and cis DR1 isomers and was attributed to the weak absorption of cis isomers at 632.8 nm and the positive dichroism of trans isomers at 514 nm. Furthermore, the all-optical switching behavior of the transient holographic gratings was observed repeatedly by turning on and off the writing beams and a response time of ten milliseconds order could be obtained.
Amorphous bulk composites were prepared by doping azo-dye disperse red 1 (DR1) in poly(methyl methacrylate) (PMMA) matrices. Photoinduced anisotropy of such kind of bulk polymer material was investigated experimentally by measuring the dichroism when irradiating with linearly polarized green light with different polarization direction. With the interaction of bi-photonic beams at 514 and 632.8 nm, transient gratings in the bulk composites could be established, which was a kind of population gratings of trans and cis DR1 isomers and was attributed to the weak absorption of cis isomers at 632.8 nm and the positive dichroism of trans isomers at 514 nm. Furthermore, the all-optical switching behavior of the transient holographic gratings was observed repeatedly by turning on and off the writing beams and a response time of ten milliseconds order could be obtained.