scholarly journals Dynamic Amplification of Optical Signals by Photorefractive Ferroelectric Liquid Crystals

10.5772/60776 ◽  
2015 ◽  
Author(s):  
Takeo Sasaki
Keyword(s):  
Liquid Crystals ◽  
Ferroelectric Liquid Crystals ◽  
Optical Signals ◽  
Dynamic Amplification

Dynamic amplification of light signals in photorefractive ferroelectric liquid crystalline mixtures

2014 ◽  
Vol 174 ◽  
pp. 203-218 ◽  
Author(s):  
Takeo Sasaki ◽  
Satoshi Kajikawa ◽  
Yumiko Naka
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Photorefractive Effect ◽  
Gain Coefficient ◽  
Ferroelectric Liquid Crystals ◽  
Time Dynamic ◽  
Chiral Compounds ◽  
Smectic C ◽  
Dynamic Amplification

The photorefractive effect in photoconductive ferroelectric liquid crystals that contain photoconductive chiral compounds was investigated. Terthiophene compounds with chiral structures were chosen as the photoconductive chiral compounds, and they were mixed with an achiral smectic C liquid crystal. The mixtures exhibit the ferroelectric chiral smectic C phase. The photorefractivity of the mixtures was investigated by two-beam coupling experiments. It was found that the ferroelectric liquid crystals containing the photoconductive chiral compound exhibit a large gain coefficient of over 1200 cm−1 and a fast response time of 1 ms. Real-time dynamic amplification of an optical image signal of over 30 fps using the photorefractive ferroelectric liquid crystal was demonstrated.

Evidence of two new ordered smectic phases in ferroelectric liquid crystals

1978 ◽  
Vol 39 (5) ◽  
pp. 548-553 ◽  
Author(s):  
J. Doucet ◽  
P. Keller ◽  
A.M. Levelut ◽  
P. Porquet
Keyword(s):  
Liquid Crystals ◽  
Ferroelectric Liquid Crystals ◽  
Smectic Phases

Second-order NLO response in chiral ferroelectric liquid crystals: Molecular and bulk consideration

2021 ◽  
pp. 115328
Author(s):  
Stijn van Cleuvenbergen ◽  
Griet Depotter ◽  
Koen Clays ◽  
Przemysław Kędziora
Keyword(s):  
Liquid Crystals ◽  
Second Order ◽  
Ferroelectric Liquid Crystals ◽  
Nlo Response

Tilt-polarization coupling in a homologous series of ferroelectric liquid crystals

1998 ◽  
Vol 8 (3) ◽  
pp. 603-612 ◽  
Author(s):  
Jochen Schacht ◽  
Heike Baethge ◽  
Frank Giesselmann ◽  
Peter Zugenmaier
Keyword(s):  
Liquid Crystals ◽  
Homologous Series ◽  
Ferroelectric Liquid Crystals
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