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Wavelength Dispersion of Optical Power Limiting in Stilbene3 Analyzed within a Three Level Model

Published online by Cambridge University Press:  10 February 2011

P-A. Chollet ,
A. Somin ,
B. Paci ,
V. Hully ,
J-M. Nunzi ,
Y. Morel  and
P. Baldeck
P-A. Chollet
Affiliation:
CEA (LETI-Technologies Avancées), DEIN/SPE/Groupe des Composants Organiques, CEA-Saclay, 91191 Gif CEDEX (France), [email protected]
A. Somin
Affiliation:
CEA (LETI-Technologies Avancées), DEIN/SPE/Groupe des Composants Organiques, CEA-Saclay, 91191 Gif CEDEX (France), [email protected]
B. Paci
Affiliation:
CEA (LETI-Technologies Avancées), DEIN/SPE/Groupe des Composants Organiques, CEA-Saclay, 91191 Gif CEDEX (France), [email protected]
V. Hully
Affiliation:
CEA (LETI-Technologies Avancées), DEIN/SPE/Groupe des Composants Organiques, CEA-Saclay, 91191 Gif CEDEX (France), [email protected]
J-M. Nunzi
Affiliation:
CEA (LETI-Technologies Avancées), DEIN/SPE/Groupe des Composants Organiques, CEA-Saclay, 91191 Gif CEDEX (France), [email protected]
Y. Morel
Affiliation:
Laboratoire de Spectrométrie Physique, Univ. J.Fourier, BP 87, 38402 St Martin d'Hères (France)
P. Baldeck
Affiliation:
Laboratoire de Spectrométrie Physique, Univ. J.Fourier, BP 87, 38402 St Martin d'Hères (France)
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Abstract

Nonlinear transmission in a dye (stilbene3) exhibiting two-photon absorption (TPA) has been studied has a function of wavelength, in the visible range using nanosecond laser pulses. The results have been analyzed within a three level model: the first excited one is populated by TPA and is excited toward an upper level (excited state absorption, ESA). The TPA and ESA spectra obtained by optical limiting (δ∼10-46 cm4s photon-1molecule-1; δ∼ 10-16 cm2) are in good agreement with those determined by two-photon fluorescence and Kerr ellipsometry. Thus, nonlinear transmission appears as a useful technique to estimate the TPA and ESA contributions in optical limiting.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 597: Symposium PP – Thin Films for Optical Waveguide Devices & Materials … , 1999 , 357
Copyright
Copyright © Materials Research Society 2000

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