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Proceedings Paper

Nonlinear photophysics and charge generation of donor-acceptor two-photon absorbing dyes
Author(s): Sean M. Kirkpatrick; Elaine K. Peterman; Gregg T. Anderson; Jeffrey E. Franklin; Jeffery W. Baur
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Paper Abstract

The nonlinear energy dynamics and charge carrier generation of a model donor-acceptor two-photon dye, AF-380, is investigated using ultrafast nonlinear spectroscopy. This material has been the focus of several investigations due to its large reported two-photon absorption cross-section, the discrepancies between long and short pulse measurements, and its use in microfabrication through holographic two-photon induced photopolymerization. It is believed that a substantial excited state absorbance can account for the difference in two-photon cross section measurements, and furthermore, that the resulting excited state exhibits a lifetime substantially long enough to affect subsequent absorption of longer pump pulses or higher repetition rates. Experimental and theoretical considerations of the electronic dynamics are discussed using a rate analysis and beam propagation code for comparison.

Paper Details

Date Published: 14 February 2003
PDF: 9 pages
Proc. SPIE 4797, Multiphoton Absorption and Nonlinear Transmission Processes: Materials, Theory, and Applications, (14 February 2003); doi: 10.1117/12.454862
Show Author Affiliations
Sean M. Kirkpatrick, Air Force Research Lab. (United States)
Elaine K. Peterman, Univ. of Dayton (United States)
Gregg T. Anderson, Air Force Research Lab. (United States)
Jeffrey E. Franklin, Air Force Research Lab. (United States)
Jeffery W. Baur, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 4797:
Multiphoton Absorption and Nonlinear Transmission Processes: Materials, Theory, and Applications
A. Todd Yeates; Christopher M. Lawson; Kevin D. Belfield; Stephen J. Caracci; Francois Kajzar; A. Todd Yeates; Kevin D. Belfield; Stephen J. Caracci, Editor(s)

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