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Proceedings Paper

High optical nonlinearity of azobenzene liquid crystals for short laser pulses
Author(s): Uladzimir Hrozhyk; Svetlana Serak; Nelson Tabiryan; Landa Hoke; Diane M. Steeves; Gary Kedziora; Brian Kimball
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Paper Abstract

Azobenzene liquid crystals (azo LCs) have been proven to possess the highest optical nonlinearity, bounding with photosensitivity, for cw laser beams. We show here that azo LCs are highly nonlinear for short laser pulses as well. Single as well as multicomponent room temperature nematic azo LCs were used in this study for single nanosecond pulses of the second harmonic of a Nd:YAG laser. These compositions demonstrate sensitivity starting from ~ 10 mJ/cm2 and exhibit response time at the nanosecond scale. The effect of material composition, layer thickness and pulse energy on the nonlinear response of a system of crossed polarizers comprising planar oriented LCs are reported.

Paper Details

Date Published: 27 August 2008
PDF: 11 pages
Proc. SPIE 7050, Liquid Crystals XII, 705007 (27 August 2008); doi: 10.1117/12.794308
Show Author Affiliations
Uladzimir Hrozhyk, Beam Engineering for Advanced Measurements Co. (United States)
Svetlana Serak, Beam Engineering for Advanced Measurements Co. (United States)
Nelson Tabiryan, Beam Engineering for Advanced Measurements Co. (United States)
Landa Hoke, US Army Natick Soldier Research Development and Engineering Ctr. (United States)
Diane M. Steeves, US Army Natick Soldier Research Development and Engineering Ctr. (United States)
Gary Kedziora, HPTi, HPCMP PET, Wright-Patterson Air Force Base (United States)
Brian Kimball, US Army Natick Soldier Research Development and Engineering Ctr. (United States)


Published in SPIE Proceedings Vol. 7050:
Liquid Crystals XII
Iam Choon Khoo, Editor(s)

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