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Reverse-saturable absorption in aluminophthalocyanine-doped xerogels |
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| Authors: | M. Brunel F. Le Luyer M. Canva A. Brun F. Chaput L. Malier J. -P. Boilot |
| Affiliation: | (1) Groupe d'Optique Non-Linéaire, Institut d'Optique Théorique et Appliquée, @ Unité Associée 14, CNRS, Bâtiment 503, B.P. 147, F-91403 Orsay Cédex, France;(2) Groupe de Chimie du Solide, Laboratoire de Physique de la Matière Condensée, Unité Associée 1254-D, CNRS, École Polytechnique, F-91128 Palaiseau Cédex, France |
| Abstract: | Aluminophthalocyanines were encaged in different silica xerogel matrices. Nonlinear reverse-saturable absorption behavior was observed for both nanosecond and picosecond pulse excitation at 532 nm. In order to determine the relaxation paths of the molecules after optical excitation, we measured the evolution of the transmission of a continuous probe beam through the samples following absorption induced by a pump pulse. The transmission recovery was a few tens of microseconds. The fluorescence lifetime was about 10 ns. |
| Keywords: | 42.10 42.65 42.70 |
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