Enhanced Two‐Photon Absorption of Organic Chromophores: Theoretical and Experimental Assessments |
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| Authors: | Francesca Terenziani Claudine Katan Ekaterina Badaeva Sergei Tretiak Mireille Blanchard‐Desce |
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| Affiliation: | 1. Dipartimento di Chimica GIAF Parma University and INSTM UdR‐Parma Parco Area delle Scienze 17/a, 43100 Parma (Italy);2. Université de Rennes 1 CNRS, Chimie et Photonique Moléculaire (CPM) Campus de Beaulieu case 1003, 35042 Rennes (France);3. Department of Chemistry University of Washington Seattle, WA 98195‐1700 (USA);4. Theoretical Division, Center for Non‐linear Studies (CNLS) Los Alamos National Laboratory, Los Alamos, NM 87545 (USA);5. Center for Integrated Nanotechnologies (CINT) Los Alamos National Laboratory, Los Alamos, NM 87545 (USA) |
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| Abstract: | Functional organic materials with enhanced two‐photon absorption lead to new technologies in the fields of chemistry, biology, and photonics. In this article we review experimental and theoretical methodologies allowing detailed investigation and analysis of two‐photon absorption properties of organic chromophores. This includes femtosecond two‐photon excited fluorescence experimental setups and quantum‐chemical methodologies based on time‐dependent density functional theory. We thoroughly analyze physical phenomena and trends leading to large two‐photon absorption responses of a few series of model chromophores focusing on the effects of symmetric and asymmetric donor/acceptor substitution and branching. |
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| Keywords: | chromophores non‐linear optics time‐dependent density functional theory (TD‐DFT) two‐photon absorption (TPA) |
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