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Proceedings Paper

Z-scan measurements of optical nonlinearities in nematic liquid crystals
Author(s): Le Li; G. Hu; Peter Palffy-Muhoray; Michael A. Lee; Haiji J. Yuan
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Paper Abstract

In order to study third order optical nonlinearities of nematic liquid crystals on the nanosecond timescale, we have carried out Z-scan measurements using a Q-switched Nd:YAG laser at 532 nm. The nonlinear refractive indices and absorption coefficients were determined for a number of liquid crystals at different temperatures. For the cyano-biphenyl 5CB, we used a two-pulse technique to estimate the response time, and we studied the intensity and wavelength dependence of the response to determine the dominant contributing mechanism. The correlation between the observed nonlinearities and the molecular structures is discussed.

Paper Details

Date Published: 18 August 1992
PDF: 11 pages
Proc. SPIE 1692, Nonlinear and Electro-Optic Materials for Optical Switching, (18 August 1992); doi: 10.1117/12.138053
Show Author Affiliations
Le Li, Kent State Univ. (United States)
G. Hu, Kent State Univ. (United States)
Peter Palffy-Muhoray, Kent State Univ. (United States)
Michael A. Lee, Kent State Univ. (United States)
Haiji J. Yuan, Crystaloid Electronics (United States)


Published in SPIE Proceedings Vol. 1692:
Nonlinear and Electro-Optic Materials for Optical Switching
M. J. Soileau, Editor(s)

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