Geometrical optics approach to the nematic liquid crystal grating: numerical results

1987 ◽  
Vol 26 (9) ◽  
pp. 1714 ◽  
Author(s):  
J. A. Kosmopoulos ◽  
H. M. Zenginoglou
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Geometrical Optics ◽  
Numerical Results ◽  
Liquid Crystal Grating

scholarly journals Diffraction and Polarization Properties of Electrically–Tunable Nematic Liquid Crystal Grating

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1929 ◽  
Author(s):  
Shuan-Yu Huang ◽  
Bing-Yau Huang ◽  
Chi-Chung Kang ◽  
Chie-Tong Kuo
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Electric Fields ◽  
Applied Voltage ◽  
Incident Beam ◽  
Electrode Structure ◽  
First Order ◽  
External Electric Fields ◽  
Order Diffraction ◽  
Liquid Crystal Grating

This work demonstrates an electrically-tunable nematic liquid crystal (NLC) diffraction grating with a periodic electrode structure, and discusses the polarization properties of its diffraction. The efficiency of the first-order diffraction can be gradually controlled by applying external electric fields cross the NLC, and the maximum diffraction efficiency of the first-order diffraction that can be obtained is around 12.5% under the applied voltage of 5.0 V. In addition to the applied electric field, the efficiency of the first-order diffraction can also vary by changing the polarized state of the incident beam. Antisymmetric polarization states with symmetrical intensities in the diffractions corresponding to the +1 and −1 order diffraction signals are also demonstrated.

Geometrical optics of a twist-oriented nematic liquid crystal

2014 ◽  
Vol 116 (3) ◽  
pp. 483-487 ◽  
Author(s):  
L. S. Aslanyan ◽  
A. L. Aslanyan ◽  
Yu. S. Chilingaryan
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Geometrical Optics

Geometrical Optics of a Twist-Oriented Nematic Liquid Crystal with Anisotropic Absorption

2019 ◽  
Vol 127 (5) ◽  
pp. 854-859 ◽  
Author(s):  
H. H. Hovakimyan ◽  
A. E. Aivazyan ◽  
L. S. Aslanyan
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Geometrical Optics

NEMATICONS PROPERTIES AND STABILITY IN CHIRAL NEMATIC LIQUID CRYSTAL

2012 ◽  
Vol 21 (03) ◽  
pp. 1250036 ◽  
Author(s):  
URSZULA A. LAUDYN ◽  
FILIP A. SALA ◽  
MIROSŁAW A. KARPIERZ
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Light Beam ◽  
Nematic Liquid Crystal ◽  
Nematic Liquid Crystals ◽  
Beam Propagation ◽  
Numerical Results ◽  
Spatial Solitons ◽  
High Birefringence ◽  
Chiral Nematic

We report on the experimental and numerical results of the nonlinear light beam propagation in planar samples of chiral nematic liquid crystals, for both high- and low-birefringence chiral nematic liquid crystals. We investigate the properties and stability of obtained nematicons. We found that reorientational spatial solitons require larger excitation powers in low-birefringence chiral nematics than in high-birefringence but remain more stable and self-focused.

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