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Proceedings Paper

Maximizing two-photon absorption cross section within few essential state model
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Paper Abstract

We compare the experimental absolute two-photon absorption (2PA) cross sections and spectra of various organic molecules with those obtained from the few (two or three) essential states model, assuming certain parameter values that are either previously calculated theoretically or measured. We study conditions under which the two- or three-level models are applicable for quantitative description of 2PA, and estimate the corresponding maximum realistic attainable peak 2PA cross sections and spectral widths. Based on our observations we formulate the steps required to increase the intensity and broaden the spectral coverage of instantaneous 2PA by optimizing intrinsic molecular parameters such as transition dipole moments, permanent dipole moments and excited states energies.

Paper Details

Date Published: 1 March 2010
PDF: 12 pages
Proc. SPIE 7599, Organic Photonic Materials and Devices XII, 75990W (1 March 2010); doi: 10.1117/12.842627
Show Author Affiliations
Aleksander Rebane, Montana State Univ. (United States)
Mikhail Drobizhev, Montana State Univ. (United States)
Nikolay S. Makarov, Montana State Univ. (United States)
Erich Beuerman, Montana State Univ. (United States)
Yujie Zhao, SensoPath Technologies, Inc. (United States)
Charles W Spangler, SensoPath Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 7599:
Organic Photonic Materials and Devices XII
Robert L. Nelson; François Kajzar; Toshikuni Kaino, Editor(s)

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