Optics and electrooptics of chiral smectic C liquid crystals

Chilaya, G. S.; Chigrinov, Vladimir G.

doi:10.1070/pu1993v036n10abeh002172

Cited by 10 publications

(2 citation statements)

References 19 publications

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“…Then, after the slow cooling of the test sample to the temperature of smectic phase, the magnetic field was removed. Only after that the precise measurements of temperature dependences of in the range of phase transitions in the test samples were carried out by the Sawyer-Tower repolarization method [1,2]. The measurement results are shown in Fig.…”

Section: The Influence Of the Structural Features Of Molecules On Spo...mentioning

confidence: 99%

The Influence of the Structural Features of Molecules on Spontaneous Polarization Value in Induced Ferroelectric Liquid Crystal Systems

Bezhanova

Atanesyan²

2022

A. J. P.

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The occurrence of the large value of spontaneous polarization is established in LC system whose composition`s molecular structure does not satisfy the obligatory conditions for the occurrence of spontaneous polarization that are imposed by theory on a molecular structure. The essential role of short range intermolecular forces in the process of ferroelectric phase transition in the studied LC systems is shown. It was found that for {CC}, {DD} and {AD} interactions the most beneficial molecules` packing in terms of energy is the antiparallel one . In the case of {AA} and {AC} interactions both parallel and are equally beneficial in terms of energy. The possibility of formation of molecular clusters–dimers is shown. It is concluded that these are stabilized, in particular, by dipole–dipole interaction of molecules. A dimer model for increasing the value of spontaneous polarization is proposed.

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Section: The Influence Of the Structural Features Of Molecules On Spo...mentioning

confidence: 99%

The Influence of the Structural Features of Molecules on Spontaneous Polarization Value in Induced Ferroelectric Liquid Crystal Systems

Bezhanova

Atanesyan²

2022

A. J. P.

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“…That is why such dynamic holographic correctors can be used in the rather wide spectral range and in the wide field of vision. However, in accordance with physical properties of OA LC SLM [7,8], the traditional approach to the record of dynamic hologram in such devices results in symmetrical profile of hologram's fringe. Hence, application of such dynamic holographic correctors leads to significant losses of light, because for the hologram with the symmetrical fringe the diffraction efficiency (DE) to the 1st diffraction order cannot exceed 40%.…”

Section: Introductionmentioning

confidence: 96%

<title>Analogous, completely optical scheme of record of blazed dynamic holograms</title>

et al. 2002

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In recent experiments of M.Gruneisen et al., the possibility was shown to record the so-called "blazed" dynamic holograms in optically addressed liquid crystal spatial light modulator (OA LC SLMs). In such holograms the phase retardation distribution across the holographic fringe has a saw-like shape (asymmetrical triangle). Such holograms can provide a very high (in a limit -nearly 100%) diffraction efficiency. In previous experiments such "blazed" holograms were recorded with the use of digital computer methods. We propose a novel, analogous and completely optical approach to the record of such holograms. One can record a saw-like profile of phase retardation in an OA SLM, placed into the nonlinear interferometer. In such interferometer the probe wave reads out the phase retardation in SLM, interferes with reference wave, and the phase retardation in the said SLM is controlled by their interference pattern. The results of the direct numerical simulation of the system show that by this method can be formed the saw-like grating, providing nearly 100% diffraction efficiency. Presented is the analysis of the system dynamics and stability.

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Electro‐optical Modes: Practical Examples of LCD Modeling and Optimization

2015

Modeling and Optimization of LCD Optical Performance

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Optics and electrooptics of chiral smectic C liquid crystals

Cited by 10 publications

References 19 publications

The Influence of the Structural Features of Molecules on Spontaneous Polarization Value in Induced Ferroelectric Liquid Crystal Systems

The Influence of the Structural Features of Molecules on Spontaneous Polarization Value in Induced Ferroelectric Liquid Crystal Systems

<title>Analogous, completely optical scheme of record of blazed dynamic holograms</title>

Electro‐optical Modes: Practical Examples of LCD Modeling and Optimization

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