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Optical properties of holographically generated twisted nematic liquid-crystal gratings

Title
Optical properties of holographically generated twisted nematic liquid-crystal gratings
Authors
Choi H.Wu J.W.
Ewha Authors
우정원
SCOPUS Author ID
우정원scopus
Issue Date
2009
Journal Title
Journal of the Optical Society of America B: Optical Physics
ISSN
0740-3224JCR Link
Citation
vol. 26, no. 1, pp. 1 - 9
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
By use of a trans-cis photoisomerization process occurring in an azo-benzene side chain, various twisted nematic liquid-crystal (LC) gratings are fabricated in LC cells. Two counterpropagating orthogonally polarized beams produce a polarization modulation, which inscribes the replica polarization modulation inside LC cells holographically, providing twisted nematic LC gratings. Micro structure, diffraction properties, and electrooptic tunability of diffraction efficiency are examined experimentally. From the Fourier transformation of the Jones matrix of twisted nematic LC gratings, Stokes parameters of the zeroth and first diffraction orders are calculated and compared with the optical measurements, resulting in a good agreement. © 2008 Optical Society of America.
DOI
10.1364/JOSAB.26.000001
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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