Journal ArticleDOI
Phase-only modulation with twisted nematic liquid-crystal spatial light modulators.
TLDR
It is shown that twisted nematic liquid-crystal spatial light modulators behave as phase-only modulators when operated below the conventional optical threshold and behave as spatial amplitude modulator when used between crossed polarizers above the optical threshold.Abstract:
It is shown that twisted nematic liquid-crystal spatial light modulators behave as phase-only modulators when operated below the conventional optical threshold. Thus such devices, when operated in a reflection mode, behave as spatial amplitude modulators when used between crossed polarizers above the optical threshold; they behave as phase modulators when used between parallel polarizers and operated below that threshold.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.
Journal ArticleDOI
Liquid crystal lenses with tunable focal length
TL;DR: In this article, the fundamental optics of lenses and its extension to lenses made of liquid crystals (LCs) are described, namely, lenses with curved surfaces, flat gradient-index lenses and composite lenses.
Journal ArticleDOI
Phase-evaluation methods in whole-field optical measurement techniques
TL;DR: The phase-evaluation methods as discussed by the authors use a combination of phase-shifted intensity values, provided by the modulation of one or several fringe patterns, to calculate the principal value of the optical phase.
Journal ArticleDOI
Full-range, continuous, complex modulation by the use of two coupled-mode liquid-crystal televisions
TL;DR: Switchable, continuous, complex-amplitude modulation is demonstrated with two cascaded, twisted nematic liquid-crystal televisions, both operating in phase- and amplitude-coupled modulation modes.
Journal ArticleDOI
Quantitative prediction of the modulation behavior of twisted nematic liquid crystal displays based on a simple physical model
TL;DR: In this article, a method to perform a predictive search for a given amplitude and phase modulation response in twisted nematic liquid crystal displays is presented, based on a simple physical model that considers the effect of liquid-crystal layers located in the vicinity of the edges, which are not able to tilt.
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