Optical power limiting based on two-photon absorption: a promising approach with conjugated oligomers

Patrice L. Baldeck; Yannick Morel; P. Najechalski; Olivier Stephan; J. F. Nicoud; Alain Ibanez; Jean-Michel Nunzi; Remi Anemian; Chantal Andraud

doi:10.1117/12.406293

15 December 2000 Optical power limiting based on two-photon absorption: a promising approach with conjugated oligomers

Patrice L. Baldeck, Yannick Morel, P. Najechalski, Olivier Stephan, J. F. Nicoud, Alain Ibanez, Jean-Michel Nunzi, Remi Anemian, Chantal Andraud

Author Affiliations +

Proceedings Volume 4087, Applications of Photonic Technology 4; (2000) https://doi.org/10.1117/12.406293
Event: 2000 International Conference on Application of Photonic Technology (ICAPT 2000), 2000, Quebec City, Canada

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.

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Patrice L. Baldeck, Yannick Morel, P. Najechalski, Olivier Stephan, J. F. Nicoud, Alain Ibanez, Jean-Michel Nunzi, Remi Anemian, and Chantal Andraud "Optical power limiting based on two-photon absorption: a promising approach with conjugated oligomers", Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000); https://doi.org/10.1117/12.406293

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