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Proceedings Paper

Novel material NMOB for optical nonlinear Langmuir-Blodgett multilayers: electro-optic and second-harmonic generation characterizations
Author(s): Gongming Wang; Jun Wen; Xingze Lu; Wencheng Wang; Hui Ai; Yi Fang; Fanggang Tao
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Paper Abstract

A new amphiphilic compound NMOB [2-nitro-5- (N-methyl-N-decosyl) aminobenzoic acid] with both good film forming property and high optical nonlinearity was synthesized for applications of Langmuir-Blodgett films in waveguide-type second harmonic generation (SHG) devices. The near-quadratic dependence of the SHG intensity on the bilayer number, the small angle x-ray diffraction patterns and the temporal stability of alternating CdA(cadmium arachidate)/NMOB multilayers confirmed their good film structures. We obtained the hyperpolarizability (beta) of NMOB of 6.3 X 10-50Cm3V-2 in SI units or 1.7 X 10-29 esu at a fundamental wavelength of 1.064 micrometers from transmitted SHG measurements which agreed with those deduced from our linear electro-optic (EO) modulated attenuated total reflection spectra at 832 nm, 633 nm and 488 nm in the order of magnitude. A resonant enhancement of the EO response near the absorption band in NMOB monolayers was observed for the first time.

Paper Details

Date Published: 23 September 1994
PDF: 8 pages
Proc. SPIE 2285, Nonlinear Optical Properties of Organic Materials VII, (23 September 1994); doi: 10.1117/12.187527
Show Author Affiliations
Gongming Wang, Fudan Univ. (China)
Jun Wen, Fudan Univ. (China)
Xingze Lu, Fudan Univ. (China)
Wencheng Wang, Fudan Univ. (China)
Hui Ai, Fudan Univ. (China)
Yi Fang, Fudan Univ. (China)
Fanggang Tao, Fudan Univ. (China)

Published in SPIE Proceedings Vol. 2285:
Nonlinear Optical Properties of Organic Materials VII
Gustaaf R. Moehlmann, Editor(s)

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