文献类型：期刊文献

英文题名：SELF-TRAPPING OF OPTICAL VORTEX BY USING THE MOLECULAR REORIENTATION IN PHOTOSENSITIVE POLYMERIC MATERIALS

作者：Tao, Ran[1];Zhu, Jiang-Zhuan[1];Shen, Dong[1];Gu, Xiao-Yan[1];Luo, Duan-Bin[1,2]

机构：[1]E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]E China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

年份：2012

卷号：21

期号：1

外文期刊名：JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000303245000012)】；

基金：This work was supported by the Fundamental Research Funds for the Central Universities (Grant No. WM1014020) and the Open Research Fun from State Key Laboratory of Precision Spectroscopy (East China Normal University), and partially supported by National Natural Science Foundation of China (No. 10905022).

语种：英文

外文关键词：Optical vortex; self-trapping; photo-isomerization; molecular reorientation

摘要：Amorphous bulk composites were prepared by doping azo-dye Disperse Red 13 (DR13) in poly(methyl methacrylate) (PMMA) matrices. Photo-induced anisotropy of such kind of bulk polymer material was investigated experimentally by measuring the birefringence when irradiating it with linearly polarized green light. We report the first observation of self-trapping of an optical vortex based on such effect in bulk poly(methyl methacrylate) materials containing photosensitive azo-dye molecules. The dependence of the average core width of a single-charge optical vortex versus time and input power was investigated in detail.