Nonlinear photophysics and charge generation of donor-acceptor two-photon absorbing dyes

Sean M. Kirkpatrick; Elaine K. Peterman; Gregg T. Anderson; Jeffrey E. Franklin; Jeffery W. Baur

doi:10.1117/12.454862

14 February 2003 Nonlinear photophysics and charge generation of donor-acceptor two-photon absorbing dyes

Sean M. Kirkpatrick, Elaine K. Peterman, Gregg T. Anderson, Jeffrey E. Franklin, Jeffery W. Baur

Proceedings Volume 4797, Multiphoton Absorption and Nonlinear Transmission Processes: Materials, Theory, and Applications; (2003) https://doi.org/10.1117/12.454862
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

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.

Citation Download Citation

Sean M. Kirkpatrick, Elaine K. Peterman, Gregg T. Anderson, Jeffrey E. Franklin, and Jeffery W. Baur "Nonlinear photophysics and charge generation of donor-acceptor two-photon absorbing dyes", Proc. SPIE 4797, Multiphoton Absorption and Nonlinear Transmission Processes: Materials, Theory, and Applications, (14 February 2003); https://doi.org/10.1117/12.454862

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