Open AccessTwo-dimensional polarization holographic recordings in azobenzene liquid-crystalline polymer thin films
Author(s) -
Tian Yong,
Pan Xu,
Changshun Wang,
Xiaoqiang Zhang,
Yi Zeng
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.6979
Subject(s) - azobenzene , grating , materials science , holography , polarization (electrochemistry) , birefringence , optics , holographic grating , diffraction efficiency , thin film , liquid crystal , linear polarization , diffraction , polymer , electromagnetically induced grating , circular polarization , optoelectronics , diffraction grating , physics , nanotechnology , chemistry , laser , composite material , microstrip
Two-dimensional 2D polarization holographic recordings were accomplished in azobenzene side-chain liquid-crystalline polymer thin films. The 2D polarization grating makes up of two orthogonal 1D polarization gratings, which were written at the same place by two orthogonally linearly polarized 532 nm beams. It is found that the diffraction efficiency of 2D grating is lower than that of 1D grating, and the 2D grating acts as the integration of its componential 1D gratings. Furthermore, we find that the polarization dependency of diffraction efficiency and the polarization conversions arise from the collaboration of linear and circular birefringence.