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자연과학대학
물리학전공
Journal papers
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Holographically generated twisted nematic liquid crystal gratings
Title
Holographically generated twisted nematic liquid crystal gratings
Authors
Choi H.
;
Wu J.W.
;
Chang H.J.
;
Park B.
Ewha Authors
우정원
SCOPUS Author ID
우정원
Issue Date
2006
Journal Title
Applied Physics Letters
ISSN
0003-6951
Citation
Applied Physics Letters vol. 88, no. 2, pp. 1 - 3
Indexed
SCI; SCIE; SCOPUS
Document Type
Article
Abstract
A reflection holographic method is introduced to fabricate an electro-optically tunable twisted nematic (TN) liquid crystal (LC) grating, forgoing the geometrical drawing. The photoisomerization process occurring on the LC alignment layers of an LC cell in the reflection holographic configuration gives a control over the twist angle, and the grating spacing is determined by the slant angle of reflection holographic configuration. The resulting diffraction grating is in a structure of a reverse TN LC, permitting a polarization-independent diffraction efficiency. The electro-optic tunability of the diffraction efficiency is also demonstrated. © 2006 American Institute of Physics.
DOI
10.1063/1.2162672
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