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Proceedings Paper

Characterization of two-photon absorption and its resonance enhancement by Z-scan method
Author(s): Kenji Kamada
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Paper Abstract

Two-photon absorption (TPA) cross section of some previously reported compounds is reexamined by the femtosecond open-aperture Z-scan method and the comparison among cross-section values measured by different measurement techniques is discussed. Also a TPA spectrum of a diacetylene derivative measured by the Z-scan method is presented. Drastic enhancement has been observed in the visible wavelength region of the spectrum, which is interpreted in terms of resonance enhancement of simultaneous TPA process. Contribution of stepwise TPA process to the observed enhancement is estimated by simulation for the dynamics.

Paper Details

Date Published: 15 October 2004
PDF: 9 pages
Proc. SPIE 5516, Nonlinear Optical Transmission and Multiphoton Processes in Organics II, (15 October 2004); doi: 10.1117/12.564846
Show Author Affiliations
Kenji Kamada, National Institute of Advanced Industrial Science and Technology (Japan)

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

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