Journal ArticleDOI
Device physics of the soft‐mode electro‐optic effect
TLDR
The softmode ferroelectric liquid crystal (SMFLC) effects utilize the electroclinic response of chiral orthogonal smectic phases (A*,B*,E*) in bookshelf geometry.Abstract:
The soft‐mode ferroelectric liquid‐crystal (SMFLC) effects utilize the electroclinic response of chiral orthogonal smectic phases (A*,B*,E*) in bookshelf geometry. The SMFLC cell may be considered a retardation plate with a field controllable optic axis, with a submicrosecond response time, and a wide continuous dynamic range. A great variety of electro‐optic components and devices can be constructed based on the SMFLC effect, many of them adding novel possibilities and challenges for optical design. We discuss in the present paper different combinations of SMFLC cells with retarders and polarizers, giving optical components capable of light and color modulation. Particularly, multiple electroclinic cells in a special constellation have the potentiality to give nearly achromatic full‐modulation light valves, as well as electrically controlled high‐speed color filters, which can be used for simple and compact TV cameras. Reflective single‐cell electroclinic devices are suitable for integration with semiconductors to give high‐speed spatial light modulators and general optical processing components with high contrast and full grey‐scale capability.read more
Citations
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Journal ArticleDOI
Nonlinear optics of liquid crystalline materials
TL;DR: In this paper, a review of the optical nonlinearities of liquid crystals is presented, and a thorough review of a wide range of nonlinear optical processes and phenomena enabled by these unique properties.
Patent
Chiral smectic liquid crystal optical modulators having variable retardation
TL;DR: In this paper, the authors present optical modulators which consist of aligned chiral smectic liquid crystal cells within an optical resonance cavity, where the cavity configurations include symmetric and asymmetric Fabry-Perot etalons.
PatentDOI
Ferroelectric liquid crystals
Bak Gun Dipl Chem Yong,Barth Petra,Demus Dietrich,Joachimi Detlev,Barbara Dipl Chem Kampa,Saskia Kohler,K. Mohr,Reinhard Paschke,Gerhard Pelzl,Ulrich Dipl Chem Rosenfeld,Wolfgang Schäfer,Klaus-Dieter Dipl Chem Scherf,Carsten Tschirske,Wolfgang Weissflog,Horst Zaschke +14 more
TL;DR: Fast switching displays with memory properties are provided, which can display digits, symbols, and images, and which contain as chemically and thermally stable ferroelectric liquid crystalline substances.
Patent
Chiral smectic liquid crystal polarization interference filters
TL;DR: In this article, discretely and continuously tunable single and multiple-stage polarization interference filters employing chiral smectic liquid crystal cells as electronically rotatable retarders are provided.
Patent
Split-element liquid crystal tunable optical filter
TL;DR: In this paper, a split-element liquid crystal polarization interference filter was proposed for wide field, bandpass, cut-on, cutoff and notch filter implementations, which consisted of a polarization interference stage defined by a pair of polarizers.
References
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Journal ArticleDOI
Submicrosecond bistable electro‐optic switching in liquid crystals
Noel A. Clark,Sven T. Lagerwall +1 more
TL;DR: Ferroelectric smectic C (FSC) liquid crystals are used in a simple new geometry that allows the spontaneous formation of either of two surface-stabilized smective C monodomains of opposite ferroelectric polarization as discussed by the authors.
Journal ArticleDOI
A New Calculus for the Treatment of Optical SystemsI. Description and Discussion of the Calculus
TL;DR: In this paper, the effect of a plate of anisotropic material such as a crystal on a collimated beam of polarized light may always be represented mathematically as a linear transformation of the components of the electric vector of the light.
Journal ArticleDOI
Electroclinic Effect at the A − C Phase Change in a Chiral Smectic Liquid Crystal
Stephen Garoff,Robert B. Meyer +1 more
TL;DR: In this paper, the electroclinic effect of chiral molecules was studied in the second order, smectic-$A$---smectic/$C$ phase transition.
Journal ArticleDOI
The Birefringent Filter
John W. Evans,Walter O Roberts +1 more
TL;DR: Optical birefringent filters, which depend for their action on the interference of polarized light, can be designed to transmit very sharp bands (down to a fraction of an angstrom in width) as mentioned in this paper.
Journal ArticleDOI
Submicrosecond electro‐optic switching in the liquid‐crystal smectic A phase: The soft‐mode ferroelectric effect
Gunnar Andersson,Ingolf Dahl,P. Keller,Wojciech Kuczynski,Sven T. Lagerwall,Kent Skarp,Bengt Stebler +6 more
TL;DR: In this article, a liquid-crystal electro-optic modulating device similar to the surface-stabilized ferroelectric liquid crystal device is described, but instead of using a tilted smectic phase like the C* phase, it utilizes the above-lying, nonferroelectric A phase, taking advantage of the electroclinic effect.
Related Papers (5)
Submicrosecond bistable electro‐optic switching in liquid crystals
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Electroclinic Effect at the A − C Phase Change in a Chiral Smectic Liquid Crystal
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