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Proceedings Paper

Optical power limiting based on two-photon absorption: a promising approach with conjugated oligomers
Author(s): Patrice L. Baldeck; Yannick Morel; P. Najechalski; Olivier Stephan; J. F. Nicoud; Alain Ibanez; Jean-Michel Nunzi; Remi Anemian; Chantal Andraud
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Paper Abstract

The nanosecond nonlinear absorption of organic molecules is a three-photon process, i.e. a two-photon initiating step followed by a transient absorption during the pulse duration. Order of magnitude calculations show that it is realistic to consider two-photon absorbing molecules for optical limiting applications at visible wavelengths. In this work we have investigated two molecular engineering approaches to optimize molecules: internal charge transfer molecules and conjugated oligomers. The oligomer approach is the most promising due the enhancement of nonlinearities that results from cooperative effects between monomers.

Paper Details

Date Published: 15 December 2000
PDF: 5 pages
Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000); doi: 10.1117/12.406293
Show Author Affiliations
Patrice L. Baldeck, Univ. Joseph Fourier (France)
Yannick Morel, Univ. Joseph Fourier (France)
P. Najechalski, Univ. Joseph Fourier (France)
Olivier Stephan, Univ. Joseph Fourier (France)
J. F. Nicoud, Institut de Physique (France)
Alain Ibanez, CNRS (France)
Jean-Michel Nunzi, CEA Saclay (France)
Remi Anemian, Ecole Normale Superieure de Lyon (France)
Chantal Andraud, Ecole Normale Superieure de Lyon (France)


Published in SPIE Proceedings Vol. 4087:
Applications of Photonic Technology 4
Roger A. Lessard; George A. Lampropoulos, Editor(s)

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