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Proceedings Paper

Material glass transition temperature, device thickness, and operational temperature effects on absorption of electro-optic polymer films
Author(s): Anne-Claire Le Duff; Michael Canva; Yves Levy; Alain Brun; A. Galvan-Gonzalez; Tomas Pliska; George I. Stegeman; Robert J. Twieg; P. Chan; Khalid Lahlil; Frederic Chaput; Jean-Pierre Boilot
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Paper Abstract

In chromophore doped materials, the trade-off between nonlinear coefficients and absorption is a critical issue. In particular, X(2):X(2) cascading based applications at 1.55 micrometers impose stringent conditions on the absorption at the second-harmonic wavelength. Transmission spectroscopy through a thin film does not provide sufficient resolution to measure the absorption coefficient on the red side of the main absorption band. However, assuming Voigt profiles, it is possible to extrapolate the absorption coefficient in the near infrared (NIR) from the main electronic resonance. We report on the dramatic impact of the host polymer matrix on the near infrared absorption of azobenzene chromophores. The effect is directly correlated to the host polymer glass transition temperature. The case of hybrid sol-gel material is also discussed. In particular, we present here an interesting correlation between the poling temperature and some spectroscopic properties. This correlation and thermo- spectroscopic measurements lead us to define an effective Tg in the sol-gel system. We also report on film thickness dependent absorption properties.

Paper Details

Date Published: 29 November 2000
PDF: 11 pages
Proc. SPIE 4106, Linear, Nonlinear, and Power-Limiting Organics, (29 November 2000); doi: 10.1117/12.408498
Show Author Affiliations
Anne-Claire Le Duff, Univ. d'Orsay-Paris XI (France)
Michael Canva, Univ. d'Orsay-Paris XI (France)
Yves Levy, Univ. d'Orsay-Paris XI (France)
Alain Brun, Univ. d'Orsay-Paris XI (France)
A. Galvan-Gonzalez, CREOL/Univ. of Central Florida (United States)
Tomas Pliska, CREOL/Univ. of Central Florida (Switzerland)
George I. Stegeman, CREOL/Univ. of Central Florida (United States)
Robert J. Twieg, Kent State Univ. (United States)
P. Chan, Molecular OptoElectronics Corp. (United States)
Khalid Lahlil, Ecole Polytechnique (France)
Frederic Chaput, Ecole Polytechnique (France)
Jean-Pierre Boilot, Ecole Polytechnique (France)

Published in SPIE Proceedings Vol. 4106:
Linear, Nonlinear, and Power-Limiting Organics
Manfred Eich; Christopher M. Lawson; Mark G. Kuzyk; Manfred Eich; Mark G. Kuzyk; Christopher M. Lawson; Robert A. Norwood, Editor(s)

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