title: Fabrication of a pure polarization grating in a cross-linked azopolymer by polarization-modulated holography.
abstract: A cross-linked azopolymer with high optical and thermal stability was prepared. A pure polarization grating without surface topology was fabricated from cross-linked azopolymer by polarization holography by use of orthogonal linearly polarized beams from a He-Cd laser with a power density of 60 mW/cm(-2). The surface relief structure was investigated by atomic-force microscopy, and the polarization grating was observed by polarization optical microscopy. The grating spacing is 1.5 microm. The grating is stable at room temperature and can endure repeated writing-erasing.
authors.affiliation: Structure Research Laboratory, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China.
authors.forename: Jingli
authors.initials: J
authors.lastname: Zhou
authors.forename: Jing
authors.initials: J
authors.lastname: Shen
authors.forename: Jianjun
authors.initials: J
authors.lastname: Yang
authors.forename: Yan
authors.initials: Y
authors.lastname: Ke
authors.forename: Keyi
authors.initials: K
authors.lastname: Wang
authors.forename: Qijin
authors.initials: Q
authors.lastname: Zhang