Formation of the light beam with wavefront screw dislocation at the photorefractive effect in nematic liquid crystal

2015 ◽  
Vol 42 (11) ◽  
pp. 319-322 ◽  
Author(s):  
I. A. Budagovsky ◽  
A. S. Zolot’ko ◽  
M. P. Smayev ◽  
S. A. Shvetsov
Keyword(s):  
Liquid Crystal ◽  
Light Beam ◽  
Screw Dislocation ◽  
Nematic Liquid Crystal ◽  
Photorefractive Effect

AC electric field assisted orientational photorefractive effect in C60-doped nematic liquid crystal

2007 ◽  
Vol 40 (11) ◽  
pp. 3348-3351 ◽  
Author(s):  
Xiudong Sun ◽  
Yanbo Pei ◽  
Fengfeng Yao ◽  
Jianlong Zhang ◽  
Chunfeng Hou
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Nematic Liquid Crystal ◽  
Photorefractive Effect ◽  
Ac Electric Field

Photorefractive Effect in Nematic Liquid Crystal Cell with Sandwiched Structure

2001 ◽  
Vol 709 ◽  
Author(s):  
Hyun-Wuk Kim ◽  
Jong-Duk Kim
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Nematic Liquid Crystal ◽  
Capillary Flow ◽  
Photorefractive Effect ◽  
Isotropic Phase ◽  
Optical Responses ◽  
Molecular Ordering ◽  
Photorefractive Effects ◽  
Sandwiched Structure

ABSTRACTOptical responses and orientational photorefractivities of nematic liquid crystal cells doped with fullerene were investigated with a sandwiched structure. The photorefractive effect was attributed to the reorientation and switching of liquid crystals using a photoalignment layer for vertical alignment. When nematic liquid crystals were injected at a nematic phase, a better cell texture could be obtained due to the capillary flow-induced orientation effect. Samples with this method showed the higher photorefractive effects than those injected at an isotropic phase. Therefore, the state of molecular ordering is important for the orientational photorefractive effects.

scholarly journals Coexistence of light-induced thermocapillary and orientational effects in thin nematic films with a free surface

2021 ◽  
Vol 2067 (1) ◽  
pp. 012016
Author(s):  
S.A. Shvetsov ◽  
A.S. Zolot’ko ◽  
G.A. Voronin ◽  
A.V. Emelyanenko ◽  
P.A. Statsenko ◽  
...  
Keyword(s):  
Free Surface ◽  
Liquid Crystal ◽  
Light Beam ◽  
Nematic Liquid Crystal ◽  
Beam Irradiation ◽  
Absorbing Substrate

Abstract The effect of nonlinear light action on a thin (∼10 µm) films of the nematic liquid crystal deposited onto the absorbing substrate is experimentally investigated. The dynamics of the orientational and thermocapillary effects is directly studied. The two types of orientational processes were found out. The first one appears for several hundreds of milliseconds when the light beam irradiation is turned on or off. The second one develops much slowly and does not relax during the light beam irradiation.

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.

Orientational photorefractive effect in nematic liquid crystal with externally applied fields

2000 ◽  
Vol 88 (4) ◽  
pp. 1709-1717 ◽  
Author(s):  
Guoquan Zhang ◽  
Germano Montemezzani ◽  
Peter Günter
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Photorefractive Effect ◽  
Applied Fields

scholarly journals Linear and nonlinear light beam propagation in chiral nematic liquid crystal waveguides

2016 ◽  
Vol 8 (1) ◽  
Author(s):  
Urszula Anna Laudyn ◽  
Michal Kwasny ◽  
Pawel Jung ◽  
Marek Trippenbach ◽  
Gaetano Assanto ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Light Beam ◽  
Nematic Liquid Crystal ◽  
Beam Propagation ◽  
Chiral Nematic ◽  
Linear And Nonlinear
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