Z-scan measurements of optical nonlinearities in nematic liquid crystals

1992 ◽  
Author(s):  
Le Li ◽  
G. Hu ◽  
Peter Palffy-Muhoray ◽  
Michael A. Lee ◽  
Haiji J. Yuan
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Optical Nonlinearities

NONLINEAR AND ELECTRO-OPTICS OF NANO-DISPERSED NEMATIC LIQUID CRYSTALS WITH TUNABLE NEGATIVE-, ZERO-, AND POSITIVE INDICES

2007 ◽  
Vol 16 (03) ◽  
pp. 381-399 ◽  
Author(s):  
I. C. KHOO ◽  
A. DIAZ ◽  
D. KWON ◽  
D. H. WERNER ◽  
J. LIOU ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Response Times ◽  
Nematic Liquid Crystals ◽  
Optical Nonlinearity ◽  
Frequency Selective Surfaces ◽  
Optical Nonlinearities ◽  
Crystal Matrix ◽  
Liquid Crystal Matrix ◽  
Positive Index

We present a review of recent progress in the studies of the nonlinear- and electro-optics of liquid crystals, particularly in their meta-material forms. An analytical expression for the "ultimate" optical nonlinearity of nematic liquid crystals is obtained, and several routes to realizing such optical nonlinearities are discussed. We also describe two approaches for realizing tunable or reconfigurable negative-zero-positive index materials: (1) planar nano-structured frequency selective surfaces [FSS] containing nematic liquid crystals; (2) core-shell nano-spheres randomly distributed in bulk nematic liquid crystal matrix. Such metamaterials can be designed for applications in the visible-infrared, as well as Terahertz and microwave regimes. These liquid crystalline meta-materials are capable of supra-nonlinearities characterized by refractive index changing coefficients of over 1 cm2/watt and microseconds response times.

Optical nonlinearities induced by electric fields in nematic liquid crystals

2015 ◽  
Author(s):  
Victor Stoian ◽  
Cristina Cîirtoaje ◽  
Emil Petrescu ◽  
Cornelia Moţoc
Keyword(s):  
Liquid Crystals ◽  
Electric Fields ◽  
Nematic Liquid Crystals ◽  
Optical Nonlinearities

Measurements of Third Order Optical Nonlinearities of Nematic Liquid Crystals

1991 ◽  
Vol 207 (1) ◽  
pp. 291-305 ◽  
Author(s):  
P. Palffy-muhoray ◽  
H. J. Yuan ◽  
L. Li ◽  
Michael A. Lee ◽  
J. R. Desalvo ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Optical Nonlinearities ◽  
Third Order
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