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Proceedings Paper

Measurement of excited-state absorption cross sections of a novel platinum complex in picosecond top-hat Z-scan experiments employing partially coherent beams
Author(s): Timothy M. Pritchett; Michael J. Ferry; William Shensky; Andrew G. Mott; Rui Liu; Wenfang Sun
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Paper Abstract

In top-hat Z scans that employ tunable sources such as optical parametric generators without line-narrowing gratings, the size of the aperture used to clip the beam may exceed the coherence length, and the variation with z of the transverse profile of the resulting partially coherent beam may differ significantly from that of a perfect top-hat beam. After a careful validation of our experimental set-up, we perform picosecond open-aperture Z scans with a top-hat beam at selected wavelengths in the visible and nanosecond open-aperture Z scans with a spatially Gaussian beam at 532-nm wavelength on a toluene solution of a particular platinum(II) 2,2′-bipyridyl complex bearing naphthalimidylethynyl-substituted fluorenylacetylide ligands. We report values of the singlet and triplet excited-state absorption cross sections of the complex.

Paper Details

Date Published: 11 October 2012
PDF: 9 pages
Proc. SPIE 8474, Optical Processes in Organic Materials and Nanostructures, 847404 (11 October 2012); doi: 10.1117/12.928852
Show Author Affiliations
Timothy M. Pritchett, U.S. Army Research Lab. (United States)
Michael J. Ferry, U.S. Army Research Lab. (United States)
William Shensky, U.S. Army Research Lab. (United States)
Andrew G. Mott, U.S. Army Research Lab. (United States)
Rui Liu, North Dakota State Univ. (United States)
Wenfang Sun, North Dakota State Univ. (United States)


Published in SPIE Proceedings Vol. 8474:
Optical Processes in Organic Materials and Nanostructures
Rachel Jakubiak; Manfred Eich; Jean-Michel Nunzi, Editor(s)

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