Share Email Print
cover

Proceedings Paper

Photophysics of organic materials exhibiting strong two-photon and excited state absorption
Author(s): Richard L. Sutherland; Mark C. Brant; Daniel G. McLean; Joy E. Rogers; Bala Sankaran; Sean M. Kirkpatrick; Paul A. Fleitz
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

We report photophysical measurements and application of an effective three-photon absorption model that characterize the two-photon and excited state absorption in organic D-π-A chromophores. The key parameter is an effective three-photon absorption coefficient that depends on the intrinsic molecular two-photon absorption cross section and excited state photophysical properties. We measure all of these molecular parameters independently in a variety of experiments and then compare the model predictions with nanosecond nonlinear absorption measurements. We find excellent agreement with the data using only experimentally measured molecular quantities and no free parameters. We conclude that excited state absorption from both singlet and triplets states is the dominant contribution to the nonlinear transmittance loss in the nanosecond regime, and that the chief role of two-photon absorption in this regime is to populate the excited triplet state.

Paper Details

Date Published: 15 October 2004
PDF: 7 pages
Proc. SPIE 5516, Nonlinear Optical Transmission and Multiphoton Processes in Organics II, (15 October 2004); doi: 10.1117/12.556831
Show Author Affiliations
Richard L. Sutherland, Science Applications International Corp. (United States)
Mark C. Brant, Science Applications International Corp. (United States)
Daniel G. McLean, Science Applications International Corp. (United States)
Joy E. Rogers, UES, Inc. (United States)
Bala Sankaran, Anteon Corp. (United States)
Sean M. Kirkpatrick, Air Force Research Lab. (United States)
Paul A. Fleitz, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 5516:
Nonlinear Optical Transmission and Multiphoton Processes in Organics II
A. Todd Yeates, Editor(s)

© SPIE. Terms of Use
Back to Top