Liquid Crystal Pretilt Research Articles

Liquid crystal pretilt angles induced by a double oblique evaporation of SiO

physica status solidi (a)Volume 62, Issue 2 p. K123-K125 Short Note Liquid crystal pretilt angles induced by a double oblique evaporation of SiO G. Hauck, G. Hauck Zentralinstitut für Elektronenphysik der Akademie der Wissenschaften der DDR, Abt. Flüssigkristalle, Berlin Search for more papers by this author G. Hauck, G. Hauck Zentralinstitut für Elektronenphysik der Akademie der Wissenschaften der DDR, Abt. Flüssigkristalle, Berlin Search for more papers by this author First published: 16 December 1980 https://doi.org/10.1002/pssa.2210620250Citations: 7 Rudower Chaussee 5, DDR-1199 Berlin, DDR. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume62, Issue216 December 1980Pages K123-K125 RelatedInformation

Optical properties of a liquid-crystal image transducer at normal incidence: Mathematical analysis and application to the off-state

We develop the mathematical procedures for quantitatively describing the optical performance of a liquid-crystal image transducer as a function of transducer parameters and operating conditions. These procedures are based on a 4 × 4 matrix formalism which provides an exact numerical solution of Maxwell’s equations. Our calculations include interference effects arising from the multilayer structure of the transducer and we realistically treat reflection and transmission at isotropic-anisotropic layer boundaries. We compute the off-state optical properties of a twisted nematic reflection-mode transducer developed at Hughes Research Laboratories. We show that the dependence of output light intensity on liquid-crystal thickness is strongly influenced by the optically isotropic layers in the transducer, especially the electrodes. If the liquid-crystal thickness varies across the transducer aperture, these layers can produce a sharp fringe pattern in the output intensity. We also analyze the effect of varying the angle between the input polarization and the director at the entrance face of the liquid-crystal layer. For a given liquid-crystal thickness, there always exists an angle for which the off-state intensity is zero. The sensitivity of off-state intensity to rotation varies with liquid-crystal thickness. Off-state behavior is independent of liquid-crystal pretilt for the range of pretilt angles used in typical transducers.