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

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)220-228
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2002
Externally publishedYes
EventMultiphoton Absorption and Nonlinear Transmission Processes: Materials, Theory, and Applications - Seattle, WA, United States
Duration: Jul 8 2002Jul 9 2002

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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