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Unusual Characteristics of Diffraction Gratings in a Liquid Crystal Cell
Author(s) -
Kim B.J.,
Lee S.D.,
Park S.Y.,
Choi D.H.
Publication year - 2002
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(20020705)14:13/14<983::aid-adma983>3.0.co;2-h
Subject(s) - materials science , holography , azobenzene , liquid crystal , diffraction efficiency , diffraction grating , diffraction , optics , grating , polarization (electrochemistry) , polymer , optoelectronics , composite material , chemistry , physics
Induced liquid crystal gratings using an azo‐polymer as an alignment layer in the cell provide an interesting possibility for storing information. Here a polarization grating and azobenzene reorientation are exploited to enhance the gain effect and the stability of the diffraction efficiency by manipulating the pump beams. The Figure juxtaposes an original image and its holographic reconstruction using the described procedure.