Bent-core liquid crystals in a route to efficient organic nonlinear optical materials

2010 ◽  
Vol 20 (15) ◽  
pp. 2965 ◽  
Author(s):  
Inmaculada C. Pintre ◽  
José Luis Serrano ◽  
M. Blanca Ros ◽  
Josu Martínez-Perdiguero ◽  
Ibon Alonso ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Optical Materials ◽  
Nonlinear Optical ◽  
Nonlinear Optical Materials

Technique for Measuring Electronic-Based Electro-Optic Coefficients of Ferroelectric Liquid Crystals

1995 ◽  
Vol 392 ◽  
Author(s):  
Kenneth E. Arnett ◽  
David M. Walba ◽  
Joel A. Drewes
Keyword(s):  
Liquid Crystals ◽  
Optical Materials ◽  
Nonlinear Optical ◽  
Broad Band ◽  
Nonlinear Optical Materials ◽  
Nonlinear Susceptibility ◽  
Ferroelectric Liquid Crystals ◽  
Polar Order ◽  
Electro Optic ◽  
Coefficient Measurement

AbstractAmong soft organic nonlinear optical materials is a class of recently developed: χ(2)_ enhanced ferroelectric liquid crystals (FLCs). The FLC phase nonlinear susceptibility is enhanced by synthesizing onto the molecules constituting the FLC phase a moiety with an increased hyperpolarizability. The hyperpolarizability of the FLC molecules couples into the permanent, thermodynamically stable, polar order of the FLC phase resulting in a material with an enhanced nonlinear susceptibility. Like other soft organics, the linear and nonlinear optical materials characteristics can be altered by chemical synthesis and mixing.We report on our technique to evaluate the nonlinear optical properties of χ(2)-enhanced FLCs by measuring their high-frequency electro-optic r-coefficients. The technique is broad-band, readily allowing electro-optic coefficient measurement between 100 KHz and 200 MHz. Although the experimental geometry is not conducive for practical device application, it offers a compromise between ease of fabrication and magnitude of nonlinear response. This technique can also be used to evaluate other organic materials such as poled polymers.

A REVIEW OF NONLINEAR OPTICAL PROPERTIES OF NEMATIC LIQUID CRYSTALS

1999 ◽  
Vol 08 (03) ◽  
pp. 305-317 ◽  
Author(s):  
I. C. KHOO
Keyword(s):  
Optical Properties ◽  
Liquid Crystals ◽  
Optical Materials ◽  
Nonlinear Optical ◽  
Response Times ◽  
Nematic Liquid Crystals ◽  
Nonlinear Optical Materials ◽  
Optical Nonlinearities ◽  
Practical Application ◽  
Application Potential

We present a review of the electronic and non-electronic optical nonlinearities of nematic liquid crystals (NLC), and recently observed nonlinear optical processes. In both the ordered and isotropic phases, NLCs exhibit large optical nonlinearities with response times ranging from picoseconds to milliseconds. The fundamental principles underlying these nonlinearities, their dynamics and practical application potential are discussed. Comparisons are made with other nonlinear optical materials currently being investigated.

Basic Studies of Nonlinear Optical Materials for Eye and Sensor Protection

2000 ◽  
Author(s):  
P. M. Tentzepis ◽  
P. Chen ◽  
I. V. Tomov ◽  
A. S. Dvornikov ◽  
D. A. Oulianov
Keyword(s):  
Optical Materials ◽  
Nonlinear Optical ◽  
Nonlinear Optical Materials ◽  
Basic Studies
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