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Proceedings Paper

Nonlinear optical phenomena in fullerene-doped liquid crystal films and fibers
Author(s): Iam-Choon Khoo; Hong Li; Y. Liang; Ming Lee; B. Yarnell; Kon-Well Wang; M. C. Wood
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Paper Abstract

In this presentation, we shall describe the mechanisms and dynamics of two newly observed phenomena in fullerene C60 doped liquid crystal, namely, holographic grating formation in thin film structures and nonlinear pulsed propagation and optical limiting in isotropic liquid crystal cored fibers and fiber arrays. The unusually large photorefractive like nonlinearity of C60 doped nematic film allows us to write permanent holographic gratings which can be electronically modulated. In fullerene-doped liquid crystalline cored fibers, we have observed greatly enhanced nonlinear optical transmission and propagation effects caused by nonlinear scattering, defocusing, increasing absorption and possibly other nonlinear processes. The resulting lower threshold and reduced interaction-length requirement enable one to design practical liquid crystal fiber arrays that could function as imaging faceplate as well as sensor protection devices.

Paper Details

Date Published: 8 December 1995
PDF: 15 pages
Proc. SPIE 2530, Fullerenes and Photonics II, (8 December 1995); doi: 10.1117/12.228111
Show Author Affiliations
Iam-Choon Khoo, The Pennsylvania State Univ. (United States)
Hong Li, The Pennsylvania State Univ. (United States)
Y. Liang, The Pennsylvania State Univ. (United States)
Ming Lee, The Pennsylvania State Univ. (United States)
B. Yarnell, The Pennsylvania State Univ. (United States)
Kon-Well Wang, The Pennsylvania State Univ. (United States)
M. C. Wood, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 2530:
Fullerenes and Photonics II
Zakya H. Kafafi, Editor(s)

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