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首页> 中文期刊> 《中国物理快报：英文版》 >Birefringence Grating and Surface Grating in Azobenzene Polymer Liquid Crystal Films Investigated by Near-Field Optical Method

Birefringence Grating and Surface Grating in Azobenzene Polymer Liquid Crystal Films Investigated by Near-Field Optical Method

         
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摘要

The birefringence grating and the surface grating in azobenzene polymer liquid-crystal (Azo-PLC) films are studied by a near-field scanning optical microscope. With laser irradiation, the refractive index change caused by birefringence and the sinusoidal surface profile are observed at the near-field transmittance image and the surface topography of the grating. The grating period and the peak-to-peak value of the sinusoidal surface profile ar e0.8 μm and 40nm, respectively. The maximum diffractive efficiency of the grating is 2%. The dynamic process of the grating formation is probed and analysed. The mass diffusion responsible for the formation of the surface grating due to the temperature rise is analysed.

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  • 来源
    《中国物理快报：英文版》 |2003年第7期|1043-1046|共4页
  • 作者

    章江英; 明海; 王沛; 孙晓红; 鲁拥华; 吴云霞; 谢建平; 张其锦; 刘剑; 谢爱芳; 张泽渤; 顾本源;

  • 作者单位

    Department of Physics, University of Science and Technology of China, Hefei 230026;

    Department of Physics, University of Science and Technology of China, Hefei 230026;

    Department of Physics, University of Science and Technology of China, Hefei 230026;

    Department of Physics, University of Science and Technology of China, Hefei 230026;

    Department of Physics, University of Science and Technology of China, Hefei 230026;

    Department of Physics, University of Science and Technology of China, Hefei 230026;

    Department of Physics, University of Science and Technology of China, Hefei 230026;

    Structure Research Laboratory, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026;

    Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026;

    Structure Research Laboratory, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026;

    Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026;

    Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080;

    Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080;

    Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080;

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