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Proceedings Paper

Wavelength-resolved nonlinearity on triazole-quinone derivatives
Author(s): Raul Rangel-Rojo; Hiro Matsuda; K. Kimura; Miguel Angel Mendez-Rojas; William H. Watson
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Paper Abstract

We present a wavelength-resolved study of the third-order nonlinearity of two derivatives of the 2-amino-1,2,3 triazole-quinone molecule. The substitution groups are a dialkylaminophenyl in one case, and ferrocene in the other, and both samples were prepared as chloroform solutions. The z-scan technique with a tunable 10 ps laser source was used to resolve the absorptive and refractive contributions to the nonlinearity at several wavelengths near resonance. In the case of the ferrocene derivative, the nonlinear response is attributed to the metal-ligand charge transfer that gives rise to the absorption spectrum features. The absorptive contribution changes from saturable to two-photon absorption going away from resonance, vanishing at λ=540 nm, while the nonlinear refractive index n2 remains finite. This is important for possible applications based on nonlinear refractive effects. For the dialkylaminophenyl derivative, a complex combination of saturable and induced absorption is observed at several wavelengths, becoming induced absorption closer to resonance and weak saturable absorption away from resonance. For both samples the nonlinear refractive index remains positive throughout the spectral range investigated.

Paper Details

Date Published: 10 November 2003
PDF: 8 pages
Proc. SPIE 5212, Linear and Nonlinear Optics of Organic Materials III, (10 November 2003); doi: 10.1117/12.502502
Show Author Affiliations
Raul Rangel-Rojo, Ctr. de Investigacion Cientifica y de Educacion Superior de Ensenada (Mexico)
Hiro Matsuda, National Institute of Advanced Industrial Science and Technology (Japan)
K. Kimura, National Institute of Adv Industrial Sci. & Tech. (Japan)
Miguel Angel Mendez-Rojas, Univ. Autonoma del Estado de Hidalgo (Mexico)
William H. Watson, Texas Christian Univ. (United States)

Published in SPIE Proceedings Vol. 5212:
Linear and Nonlinear Optics of Organic Materials III
Mark G. Kuzyk; Manfred Eich; Robert A. Norwood, Editor(s)

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