TY - JOUR
T1 - Supra optical nonlinearities of photosensitive nematic liquid crystals
AU - Khoo, I. C.
AU - Shih, M. Y.
AU - Shishido, A.
PY - 2001
Y1 - 2001
N2 - A critical review of laser induced nonlinear index changing mechanisms in liquid crystals is presented. In some azo-compound doped nematic films, we have observed nonlinear index coefficient ≫ 1 cm2/W. The supra optical nonlinearities are attributed to photorefractivity, order parameter modification and dopant-nematic intermolecular torques. Using these nematic films, we show that it is possible to perform image processing with μW/cm2 optical intensity, and optical limiting with μW power lasers.
AB - A critical review of laser induced nonlinear index changing mechanisms in liquid crystals is presented. In some azo-compound doped nematic films, we have observed nonlinear index coefficient ≫ 1 cm2/W. The supra optical nonlinearities are attributed to photorefractivity, order parameter modification and dopant-nematic intermolecular torques. Using these nematic films, we show that it is possible to perform image processing with μW/cm2 optical intensity, and optical limiting with μW power lasers.
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U2 - 10.1080/10587250108024984
DO - 10.1080/10587250108024984
M3 - Article
AN - SCOPUS:31644447486
SN - 1058-725X
VL - 364
SP - 141
EP - 149
JO - Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
ER -