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Deformed Helix Ferroelectric Liquid Crystals with Large Tilt Angles in Optically Addressed Spatial Light Modulators for Dynamical Holography Applications

Published online by Cambridge University Press:  10 February 2011

L. A. Beresnev
Affiliation:
Institute of Physical Chemistry, Darmstadt University of Technology, Petersenstr. 20, 64287 Darmstadt, Germany
W. Haase
Affiliation:
Institute of Physical Chemistry, Darmstadt University of Technology, Petersenstr. 20, 64287 Darmstadt, Germany
A. P. Onokhov
Affiliation:
All-Russian S.I.Vavilov Research Center “GOI”, Birgevaya Liniya 12, St. Petersburg, Russia
W. Dultz
Affiliation:
Deutsche Telekom AG, Am Kavalleriesand 3, 64276 Darmstadt, Germany
M. V. Isaev
Affiliation:
All-Russian S.I.Vavilov Research Center “GOI”, Birgevaya Liniya 12, St. Petersburg, Russia
N. A. Feoktistov
Affiliation:
A.F.Ioffe Physical Technical Institute, St. Petersburg, Russia
N. L. Ivanova
Affiliation:
All-Russian S.I.Vavilov Research Center “GOI”, Birgevaya Liniya 12, St. Petersburg, Russia
E. A. Konshina
Affiliation:
All-Russian S.I.Vavilov Research Center “GOI”, Birgevaya Liniya 12, St. Petersburg, Russia
A. N. Chaika
Affiliation:
Institute of Laser Physics “GOI”, Birgevaya Liniya 12, St.Petersburg, Russia.
V. A. Berenberg
Affiliation:
Institute of Laser Physics “GOI”, Birgevaya Liniya 12, St.Petersburg, Russia.
T. Weyrauch
Affiliation:
Institute of Physical Chemistry, Darmstadt University of Technology, Petersenstr. 20, 64287 Darmstadt, Germany
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Abstract

Optically addressed spatial light modulators (OASLMs) based on deformed helix ferroelectric liquid crystals (DHFLC) with high tilt angles on order of 40° and helical pitches less than 0.2μm were developed. The diffraction efficiency reached the order of 20%. The light induced deviation of the optical axis of the DHFLC layer was measured in sandwich structures consisting of photoconductors and liquid crystals. The photoelectric parameters of photoconductive amorphous silicon carbide a-SiC:H and a photoconductive polymeric films were measured with and without light blocking and reflecting layers. The application of the developed OASLMs in a holographic image corrector was demonstrated.

Type
Research Article
Copyright
Copyright © Materials Research Society 1998

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