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Proceedings Paper

Optical limiting of C60, C60 charge-transfer complexes, and higher fullerenes from 532 to 750 nm
Author(s): James Randy Heflin; S. Wang; Daniela Marciu; Charles Figura; R. Yordanov
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Paper Abstract

The wavelength-dependence of optical limiting in the reverse saturable absorber C60 has been studied in detail over a large spectral range and compared to that of two phthalocyanines. The reverse saturable absorption of C60 is found to increase at wavelengths longer than the standardly measured 532 nm. The optical limiting data have been analyzed in terms of the dynamical population rate equations to obtain the excited state absorption cross-sections. The computational effort of the analysis is greatly reduced by a semi-analytic solution to the rate equations that we have developed. We have also demonstrated that the spectral window for optical limiting of fullerenes can be increased to include longer wavelengths at which C60 is transparent. Both a C60 charge-transfer complex and C76 have been shown to exhibit strong reverse saturable absorption at long wavelengths.

Paper Details

Date Published: 8 December 1995
PDF: 12 pages
Proc. SPIE 2530, Fullerenes and Photonics II, (8 December 1995); doi: 10.1117/12.228117
Show Author Affiliations
James Randy Heflin, Virginia Polytechnic Institute and State Univ. (United States)
S. Wang, Virginia Polytechnic Institute and State Univ. (United States)
Daniela Marciu, Virginia Polytechnic Institute and State Univ. (United States)
Charles Figura, Virginia Polytechnic Institute and State Univ. (United States)
R. Yordanov, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 2530:
Fullerenes and Photonics II
Zakya H. Kafafi, Editor(s)

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