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Proceedings Paper

Infrared and visible laser-induced thermal and density optical nonlinearities in nematic and isotropic liquid crystals
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Paper Abstract

Using a Q-switched CO2 laser pulse induced dynamic grating technique, the basic mechanisms for the optical nonlinearities of nematic and isotropic liquid crystals in the infrared (10.6 micrometers ) region are reexamined. The principle mechanisms are the density and temperature effects, which are characterized by relaxation times in the nano- and micro-second time scales, respectively. Optical self-limiting effects and optical switching using isotropic liquid crystals are also demonstrated for visible nanosecond (Q-switch Nd:YAG at 0.53 micrometers ) and for infrared microsecond laser pulses, respectively.

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: 10.1117/12.138057
Show Author Affiliations
Robert G. Lindquist, The Pennsylvania State Univ. (United States)
Peter G. LoPresti, The Pennsylvania State Univ. (United States)
Iam-Choon Khoo, The Pennsylvania State Univ. (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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