Electrically controlled waveguide liquid-crystal elements

Kabanova, O. S.; Melnikova, E. A.; Olenskaya, I. I.; Толстик, А. Л.

doi:10.1134/s1063785014070207

Cited by 8 publications

(5 citation statements)

References 14 publications

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“…The classic electro-optic (EO) effect is related to the refractive index alteration due to the modification of the index ellipsoid (or optical indicatrix) by applying an external electric field. Commonly used materials for electro-optic waveguides are LiNbO 3 , LiTaO 3 , BaTiO 3 , electro-optic polymers, and nematic liquid crystals (NLCs) [1][2][3][4][5][6]. Due to the very high birefringence, combined with the possibility of changing it under the effect of external stimuli in thin-film NLC elements, the latter offers an excellent opportunity to develop novel methods and devices for the control of light beams [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Commonly used materials for electro-optic waveguides are LiNbO 3 , LiTaO 3 , BaTiO 3 , electro-optic polymers, and nematic liquid crystals (NLCs) [1][2][3][4][5][6]. Due to the very high birefringence, combined with the possibility of changing it under the effect of external stimuli in thin-film NLC elements, the latter offers an excellent opportunity to develop novel methods and devices for the control of light beams [6,7]. The fluid nature of NLCs and their compatibility with most optoelectronic materials, polymers, and organic materials allow them to be easily incorporated with other elements in various configurations, forms, and geometries, thereby increasing the potential applications in novel photonic networks.…”

Section: Introductionmentioning

confidence: 99%

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Electrical Control of Optical Liquid-Crystal-Guided Microstructures

Kwaśny

Laudyn

2022

Crystals

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrical Control of Optical Liquid-Crystal-Guided Microstructures

Kwaśny

Laudyn

2022

Crystals

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“…Examples of such objects are photoinduced domain structures, electrically controlled liquid crystal elements, dynamic magnon crystals, etc. [6][7][8]. In addition to creating new technologies for manufacturing such structured objects, the task is to measure their parameters.…”

Section: Introductionmentioning

confidence: 99%

Method for visualization of macrodefects of dynamic periodic structures, based on the effect of the emergence of muar strips

Avlasevich¹,

Ануфрик²,

Lialikov³

2019

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Of particular interest are objects characterized by a tunable periodic structure. The structure parameters of such objects change not only in space, but also in time. The study of behavior in space and visualization of defects in periodic structures is one of the main tasks of measuring control. The paper proposes a simple method of visualization of macrodefects of dynamic periodic structures based on the effect of the appearance of moire fringes. An easy-to-use visualization method involves registering a series of snapshots of a dynamic periodic structure followed by combining a selected pair of snapshots. The devices for recording a series of snapsohts and forming moiré paintings are described. A feature of the implementation of this method of visualization of macrodefects is the possibility of using incoherent light both when registering snapsohts and in the process of forming moire fringes. When creating a device for implementing the method, household LED lamps A60 with a matte bulb were used as light sources. A series of moire patterns was obtained, visualizing the spatial position of the macrodefect of the mask surface at various points in time of its mechanical deformation. A pattern of moire fringes, visualizing the position of a macrodefect of a periodic structure, was recorded by a digital camera and displayed on a personal computer monitor screen.

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“…The schemes offering the creation of interfaces between two LC modes differing in orientations of the director are of particular interest. At the interface of two director orientational domains, one can realize reflection, refraction, and polarizational separation of light beams [13][14][15][16]; with the use of several interfaces, the waveguided propagation of laser radiation can be attained [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Optical switch based on the electrically controlled liquid crystal interface

et al. 2015

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The peculiarities of the linearly polarized light beam reflection at the interface within the bulk of a nematic liquid crystal (NLC) cell with different orientations of the director are analyzed. Two methods to create the interface are considered. Combination of the planar and homeotropic orientations of the NLC director is realized by means of a spatially structured electrode under the applied voltage. In-plane patterned azimuthal alignment of the NLC director is created by the patterned rubbing alignment technique. All possible orthogonal orientations of the LC director are considered; the configurations for realization of total internal reflection are determined. The revealed relationship between the propagation of optical beams in a liquid crystal material and polarization of laser radiation has enabled realization of the spatial separation for the orthogonally polarized light beams at the interface between two regions of NLC with different director orientations (domains). Owing to variations in the applied voltage and, hence, in the refractive index gradient, the light beam propagation directions may be controlled electrically.

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Electrically controlled waveguide liquid-crystal elements

Cited by 8 publications

References 14 publications

Electrical Control of Optical Liquid-Crystal-Guided Microstructures

Electrical Control of Optical Liquid-Crystal-Guided Microstructures

Method for visualization of macrodefects of dynamic periodic structures, based on the effect of the emergence of muar strips

Optical switch based on the electrically controlled liquid crystal interface

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