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Enhancement of modulation depth of an all-optical switch using an azo dye-ethyl red film

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【Author】 Lu Wen-Qiang~(a)),Chen Gui-Ying~(b)+),Hao Zhao-Feng~(c)), Xu Jing-Jun~(c)),Tian Jian-Guo~(c)),and Zhang Chun-Ping~(c)) a)Physics Experimental Teaching Center,School of Physics,Nankai University,Tianjin 300071,China b)Key Laboratory of Tropical Marine Environmental Dynamics,South China Sea Institute of Oceanology, Chinese Academy of Sciences,Guangzhou 510301,China c)Photonic Center,School of Physics,Nankai University,Tianjin 300072,China

【机构】 Physics Experimental Teaching Center,School of Physics,Nankai University； Key Laboratory of Tropical Marine Environmental Dynamics,South China Sea Institute of Oceanology,Chinese Academy of Sciences； Photonic Center,School of Physics,Nankai Universitv；

【摘要】 <正>The polymethyl methacrylate(PMMA) film doped with an azo dye ethyl-red(ER) film is employed to demonstrate the properties of an all-optical switch by its photoinduced dichroism and birefringence.We show how to enhance remarkably the modulation depth of all-optical switches almost to 100%by using two linear polarization beams:one beam is inclined at 45°with respect to the probing beam and serves as a pumping beam,and the other beam is perpendicular to the probing beam and used as an erasing beam.Furthermore,a maximum-to-minimum output intensity ratio of 2000:1 is achieved in experiment,which is very useful and important for optical storages and image displays.更多还原

【Abstract】 The polymethyl methacrylate(PMMA) film doped with an azo dye ethyl-red(ER) film is employed to demonstrate the properties of an all-optical switch by its photoinduced dichroism and birefringence.We show how to enhance remarkably the modulation depth of all-optical switches almost to 100%by using two linear polarization beams:one beam is inclined at 45°with respect to the probing beam and serves as a pumping beam,and the other beam is perpendicular to the probing beam and used as an erasing beam.Furthermore,a maximum-to-minimum output intensity ratio of 2000:1 is achieved in experiment,which is very useful and important for optical storages and image displays.更多还原

【关键词】 all-optical switch； azo dye ethyl-red film； modulation depth；
【Key words】 all-optical switch； azo dye ethyl-red film； modulation depth；

【基金】 Project supported by the National Natural Science Foundation of China(Grant No.10774152);the Science and Technology Foundation of Guangzhou City,China(Grant No.2008J1-C021); the Research Fund for the Doctoral Program of Higher Education of China(Grant No.20070055103)

【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2010年08期

【分类号】TN631
【被引频次】1
【下载频次】18

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