Theoretical study of laser-induced thermomechanical effect and new type of orientational optical nonlinearity in twist aligned nematic liquid crystal

2010 ◽  
Author(s):  
A. K. Aleksanyan ◽  
R. S. Hakobyan
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Theoretical Study ◽  
Optical Nonlinearity ◽  
Thermomechanical Effect ◽  
New Type

LASER-INDUCED THERMOMECHANICAL EFFECTS IN NEMATIC LIQUID-CRYSTAL

2012 ◽  
Vol 15 ◽  
pp. 120-128
Author(s):  
A.K. ALEKSANYAN ◽  
G.S. GEVORGYAN ◽  
R.S. HAKOBYAN ◽  
R.B. ALAVERDYAN
Keyword(s):  
Liquid Crystal ◽  
Laser Beam ◽  
Nematic Liquid Crystal ◽  
Normal Incidence ◽  
Optical Nonlinearity ◽  
Angle Of Incidence ◽  
Absorbed Energy ◽  
The Third ◽  
Thermomechanical Effect ◽  
Thermomechanical Effects

As we know there are several mechanisms allowing us to convert absorbed energy by liquid crystal (LC) to the energy of reorientation of director. One of them is the third thermomechanical effect. Third thermomechanical effect induced by Gaussian beam was recently studied both theoretically and experimentally. It was shown that thermomechanical effects can decrease the threshold of Fréedericksz transition in dye-doped nematic liquid crystal (NLC). One of the big advantages of thermomechanical effect compared with other mechanisms (for instance giant optical nonlinearity (GON)), which are absent in the case of normal incidence of laser beam, is that it emerges at any angle of incidence of laser beam. Thermomechanical effects were also studied in NLC, containing azobenzene in their molecular structure. It was suggested that one of the mechanisms of optical nonlinearity observed in the experiment in such medium may be the thermomechanical effect.

Theoretical study of flexoelectric effect and spontaneous distortion in domain walls within nematic liquid crystal system

2018 ◽  
Vol 33 (1) ◽  
pp. 1-13
Author(s):  
张 晶 ZHANG Jing ◽  
周 璇 ZHOU Xuan ◽  
陈思博 CHEN Si-bo ◽  
刘 凯 LIU Kai ◽  
张志东 ZHANG Zhi-dong
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Domain Walls ◽  
Theoretical Study ◽  
Crystal System ◽  
Flexoelectric Effect ◽  
Liquid Crystal System

High optical nonlinearity of nematic liquid crystal doped with graphen oxide

2017 ◽  
Vol 244 ◽  
pp. 103-109 ◽  
Author(s):  
Nima Dalir ◽  
Soheila Javadian ◽  
Zahra Dehghani
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Optical Nonlinearity

Characterization of Optical Nonlinearity in Dye-Doped Nematic Liquid Crystal and the Effect of AC Voltage on Its Behavior

2008 ◽  
Vol 488 (1) ◽  
pp. 23-30 ◽  
Author(s):  
S. H. Mousavi ◽  
M. H. Majles Ara ◽  
F. Soheilian ◽  
E. Koushki ◽  
S. Salmani ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Optical Nonlinearity

Conformational Optical Nonlinearity of Nematic Liquid Crystal

1991 ◽  
Vol 207 (1) ◽  
pp. 43-52 ◽  
Author(s):  
I. P. Pinkevich ◽  
Yu. A. Reznikov ◽  
V. Yu. Reshetnyak
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Optical Nonlinearity

Orientational optical nonlinearity induced by comb-shaped polymers in a nematic liquid crystal

2008 ◽  
Vol 106 (1) ◽  
pp. 172-181 ◽  
Author(s):  
I. A. Budagovsky ◽  
A. S. Zolot’ko ◽  
V. N. Ochkin ◽  
M. P. Smayev ◽  
A. Yu. Bobrovsky ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Optical Nonlinearity
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