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Proceedings Paper

Two-photon spectra of C60 and C70 films between 0.74 and 1.7 um
Author(s): Friedrich P. Strohkendl; Theresa J. Axenson; R. J. Larsen; Larry Raymond Dalton; Robert W. Hellwarth; Zakya H. Kafafi
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Paper Abstract

We present new femtosecond degenerate four-wave (DFWM) measurements on a C70 film in the wavelength range 0.9- 1.6 micrometers in conjunction with previously measured data in C60 and C70 in the ranges 0.74-1.7 (mu) and 0.74-0.88 micrometers , respectively. The new data reveal tow closely spaced peaks in the DFWM spectrum which we interpret as two-photon states with excitation energies of 2.41 +/- 0.05 eV and 2.64 +/- 0.03 eV. We relate these results to nonlinear optical spectra obtained by others in C60 and C70 films. In particular, we compare third-harmonic generation, electro-absorption and DFWM and emphasize the relative advantages of DFWM for two-photon spectroscopy.

Paper Details

Date Published: 1 November 1997
PDF: 16 pages
Proc. SPIE 3142, Fullerenes and Photonics IV, (1 November 1997); doi: 10.1117/12.293358
Show Author Affiliations
Friedrich P. Strohkendl, Univ. of Southern California (United States)
Theresa J. Axenson, Univ. of Southern California (United States)
R. J. Larsen, Univ. of Southern California (United States)
Larry Raymond Dalton, Univ. of Southern California (United States)
Robert W. Hellwarth, Univ. of Southern California (United States)
Zakya H. Kafafi, Naval Research Lab. (United States)


Published in SPIE Proceedings Vol. 3142:
Fullerenes and Photonics IV
Zakya H. Kafafi, Editor(s)

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