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Proceedings Paper

Nonlinear absorption and emission of excited states in metalloporphyrin-doped sol gels
Author(s): Kai Dou; Xiaodong Sun; Xiao-jun Wang; Edward T. Knobbe
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Paper Abstract

In this paper, we describe up-converted luminescence and reverse saturation absorption of metalloporphyrins of CuTPPS and ZnTPPS in aluminosilicate sol-gel materials. The photo- upconversion luminescence is believed to arise from the radiative recombination of the second excited singlet (singdoublet) state. These effects are attributed to the higher excited state absorption. The dynamic analysis for the excited state processes indicates that the saturation or reverse saturation absorption is dependent on the ratio of the average absorption cross-section of the excited states to that of the ground state. The absorption cross-sections of the excited states are estimated.

Paper Details

Date Published: 2 October 1997
PDF: 9 pages
Proc. SPIE 3136, Sol-Gel Optics IV, (2 October 1997); doi: 10.1117/12.279172
Show Author Affiliations
Kai Dou, Oklahoma State Univ. (United States)
Xiaodong Sun, Oklahoma State Univ. (United States)
Xiao-jun Wang, Georgia Southern Univ. (United States)
Edward T. Knobbe, Oklahoma State Univ. (United States)

Published in SPIE Proceedings Vol. 3136:
Sol-Gel Optics IV
Bruce S. Dunn; John D. Mackenzie; Edward J. A. Pope; Helmut K. Schmidt; Masayuki Yamane, Editor(s)

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