Electro-Optic Properties Of Nematic Liquid Crystals For Phase Modulation In The Infrared 10.6μm.

1989 ◽  
Author(s):  
P. Joffre ◽  
G. Illiaquer ◽  
J. P. Huignard
Keyword(s):  
Liquid Crystals ◽  
Phase Modulation ◽  
Nematic Liquid Crystals ◽  
Electro Optic

scholarly journals Polarization-independent 2 pi phase modulation for Terahertz using chiral nematic liquid crystals

2016 ◽  
Vol 6 (7) ◽  
pp. 2283 ◽  
Author(s):  
Chun-Ta Wang ◽  
Chung-Lun Wu ◽  
Han-Wei Zhang ◽  
Tsung-Hsien Lin ◽  
Chao-Kuei Lee
Keyword(s):  
Liquid Crystals ◽  
Phase Modulation ◽  
Nematic Liquid Crystals ◽  
Chiral Nematic ◽  
Polarization Independent

scholarly journals Addressable Refraction and Curved Soliton Waveguides Using Electric Interfaces

2019 ◽  
Vol 9 (2) ◽  
pp. 347 ◽  
Author(s):  
Eugenio Fazio ◽  
Massimo Alonzo ◽  
Alessandro Belardini
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Total Reflection ◽  
Spatial Solitons ◽  
The Past ◽  
Curved Structures ◽  
Electro Optic ◽  
Propagation Losses ◽  
Complex Circuits

A great deal of interest over the years has been directed to the optical space solitons for the possibility of realizing 3D waveguides with very low propagation losses. A great limitation in their use for writing complex circuits is represented by the impossibility of making curved structures. In the past, solitons in nematic liquid crystals, called nematicons, were reflected on electrical interfaces, and more recently photorefractive spatial solitons have been, as well. In the present work, we investigate refraction and total reflection of spatial solitons with saturable electro-optic nonlinearity, such as the photorefractive ones, on an electric wall acting as a reflector. Using a custom FDTD code, the propagation of a self-confined beam was analyzed as a function of the applied electric bias. The electrical reflector was simulated by applying different biases in two adjacent volumes. We observed both smaller and larger angles of refraction, up to the critical π/2-refraction condition, and then the total reflection. The radii of curvature of the associated guides can be varied from centimeters down to hundreds of microns. The straight guides showed losses as low as 0.07 dB/cm as previously observed, while the losses associated with single curves were estimated to be as low as 0.2 dB.

Optical Phase Modulation Using Dual-Frequency Nematic Liquid Crystals

2008 ◽  
Vol 480 (1) ◽  
pp. 49-71 ◽  
Author(s):  
Mikhail I. Barnik ◽  
Artur R. Geivandov ◽  
Vladimir V. Lazarev ◽  
Serguei P. Palto ◽  
Serguei V. Yakovlev
Keyword(s):  
Liquid Crystals ◽  
Phase Modulation ◽  
Nematic Liquid Crystals ◽  
Dual Frequency ◽  
Optical Phase ◽  
Optical Phase Modulation

Electro-optic effects in nematic liquid crystals

1991 ◽  
Vol 127 (1) ◽  
pp. 259-263 ◽  
Author(s):  
M. Marthandappa ◽  
R. Somashekar ◽  
Nagappa
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Electro Optic

Nanosecond Response in Nematic Liquid Crystals for Ultrafast Electro-Optic Devices

2013 ◽  
Author(s):  
Volodymyr Borshch ◽  
Sergij V. Shiyanovskii ◽  
Oleg D. Lavrentovich
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Electro Optic
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