The role of defects and boundary and volume inhomogeneities in the field-induced director reorientation in nematic liquid crystals confined between parallel plates

2008 ◽  
Vol 517 (4) ◽  
pp. 1387-1393 ◽  
Author(s):  
A.F. Martins ◽  
A. Véron
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Parallel Plates ◽  
Director Reorientation

scholarly journals REFRACTION OF NONLINEAR LIGHT BEAMS IN NEMATIC LIQUID CRYSTALS

2012 ◽  
Vol 21 (03) ◽  
pp. 1250033 ◽  
Author(s):  
GAETANO ASSANTO ◽  
NOEL F. SMYTH ◽  
WENJUN XIA
Keyword(s):  
Steady State ◽  
Liquid Crystals ◽  
Solitary Waves ◽  
Nematic Liquid Crystals ◽  
Optical Solitons ◽  
Numerical Results ◽  
Dielectric Interface ◽  
Modulation Theory ◽  
Light Beams

We use modulation theory to analyze the interaction of optical solitons and vortices with a dielectric interface between two regions of nematic liquid crystals. In the analysis we consider the role of nonlocality, anisotropy and nonlinear reorientation and compare modulation theory results with numerical results. Upon interacting with the interface, nematicons undergo transverse distortion but remain stable and eventually return to a steady state, whereas vortices experience an enhanced instability and can break up into bright beams or solitary waves.

Light-Induced Director Reorientation in Nematic Liquid Crystals Doped with Azobenzene-Containing Macromolecules of Different Architecture

2008 ◽  
Vol 488 (1) ◽  
pp. 265-278 ◽  
Author(s):  
A. S. Zolot'ko ◽  
I. A. Budagovsky ◽  
V. N. Ochkin ◽  
M. P. Smayev ◽  
A. Yu. Bobrovsky ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Director Reorientation

Random lasing in dye doped nematic liquid crystals: the role of confinement geometry

2007 ◽  
Author(s):  
G. Strangi ◽  
S. Ferjani ◽  
V. Barna ◽  
A. De Luca ◽  
C. Versace ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Random Lasing

HIGHLY NONLOCAL OPTICAL SOLITONS AND THEIR OBSERVATION IN NEMATIC LIQUID CRYSTALS

2004 ◽  
Vol 18 (20n21) ◽  
pp. 2819-2828 ◽  
Author(s):  
GAETANO ASSANTO ◽  
CLAUDIO CONTI ◽  
MARCO PECCIANTI
Keyword(s):  
Liquid Crystals ◽  
General Theory ◽  
Nematic Liquid Crystals ◽  
Optical Solitons ◽  
Spatial Solitons ◽  
Specific System ◽  
Arbitrary Degree ◽  
Self Focusing ◽  
Remarkable Agreement

We investigate 2-dimensional spatial optical solitons in media exhibiting a large nonlocal response coupled with a self-focusing nonlinearity. To this extent, with reference to a specific system in undoped nematic liquid crystals, we develop a general theory of spatial solitons in media with an arbitrary degree of nonlocality and carry out experimental observations to validate the model. The remarkable agreement between predictions and data yields evidence of narrow-waist solitons, revealing an important connection between nonparaxiality and nonlocality and emphasizing the role of nonlocality.

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