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Liquid crystals as materials for real-time holographic optical devices
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In this article, the origins of the diffraction gratings or holograms induced by a light intensity pattern in a dye-doped nematic liquid crystal sandwiched between two conducting glass plates are described.Abstract:
This paper describes low-molecular-mass liquid crystals doped with suitable dyes which can be used for real-time holographic purposes We describe the origins of the diffraction gratings or holograms induced by a light intensity pattern in a dye-doped nematic liquid crystal sandwiched between two conducting glass plates The mechanism is linked to electric-field-driven reorientation of the nematic director The modulation of the electric field is induced mainly by the bulk photoconductivity of the system Design and characterization (response time, diffraction efficiency) of the optically addressed spatial light modulator (OA-SLM) is presented Interesting applications of these materials enabling phase conjugation and optical correlation are discussedread more
Citations
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Application of liquid crystal (LC) devices for optoelectronic reconstruction of digitally stored holograms
TL;DR: In this article, the authors proposed the optoelectronic reconstruction of a hologram that is digitally recorded and transferred to another optical medium, such as liquid crystal cells or liquid crystal matrices.
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Fullerene dispersed nematic liquid crystal structures: dynamic characteristics and self-organization processes
TL;DR: In this article, a possible way to speed up the operation of liquid crystal structures based on nematic mixtures with a charge transfer complex between a fullerene and an organic molecule donor fragment is studied using pyridine and polyaniline monomers and polymers as systems with the donor?acceptor interaction.
Journal ArticleDOI
Surface-mediated light-controlled Friedericksz transition in a nematic liquid crystal cell
Valeriy Boichuk,Sergey Kucheev,Janusz Parka,Victor Yu. Reshetnyak,Yuriy Reznikov,Irina Shiyanovskaya,Kenneth D. Singer,S. Slussarenko +7 more
TL;DR: In this article, a surface-dependent lowering of the Friedericksz transition voltage in a planar cell upon light irradiation was found, and it is believed that this effect is due to a light-induced change in the near surface ion concentration in the presence of a dc field and a photosensitive surface.
Journal ArticleDOI
Effect of CdSe/ZnS semiconductor quantum dots on the dynamic properties of nematic liquid-crystalline medium
TL;DR: In this article, the influence of nanoobjects representing CdSe/ZnS semiconductor quantum dots on the temporal characteristics of liquid crystals (LCs) belonging to the class of cyanobiphenyls has been studied for the first time.
Journal ArticleDOI
Charge transport due to photoelectric interface activation in pure nematic liquid-crystal cells
TL;DR: In this paper, the role of liquid-crystal-polymer interface on photoinduced transport and redistribution of charges in pure nematic liquidcrystal cells that exhibit a photorefractive-like effect was investigated.
References
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Journal ArticleDOI
Surface-mediated alignment of nematic liquid crystals with polarized laser light
TL;DR: In this article, a new mechanism for liquid-crystal alignment that uses polarized laser light was proposed. But it was not shown to be effective for large-area displays, optical memories, binary optics, adaptive optics and molecular micro-assembly.
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A photorefractive polymer with high optical gain and diffraction efficiency near 100
TL;DR: In this article, the authors describe a polymer composite with excellent photorefractive properties, achieving a diffraction efficiency approaching 100% and a net two-beam coupling gain of more than 200 cm-1.
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Organic Materials for Reversible Optical Data Storage
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High Photorefractive Gain in Nematic Liquid Crystals Doped with Electron Donor and Acceptor Molecules
TL;DR: In this article, a photorefractive gain ratio of 1.88 was achieved with low applied electric fields (0.4 kilovolts per centimeter) requiring only a 1.5volt battery and low light intensities (100 milliwatts per square centimeter).
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Molecular interpretation of the absorption-induced optical reorientation of nematic liquid crystals.
TL;DR: A molecular mechanism is proposed to explain the anomalous optical reorientation observed in nematic guest-host systems according to the interaction between the excited dye molecules and the nematic host.