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16 December 1996 Third-order optical nonlinearity of C60 and C70 and their metal derivatives under picosecond laser excitation
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Abstract
We have carried out measurements of real and imaginary parts of second order hyperpolarizability (gamma) of C60, C70, (Ph3P)2PtC60, ((C5H5)2Fe)2C60 and (C5H5)2CoC60 solutions and C60 films using the Z-scan technique with picosecond excitation at 527.5 and 1055 nm wavelengths. It was found that addition of ferrocene or cobaltocene to C60 molecule slightly influences its nonlinearity while Pt-group attachment increases total nonlinearity by an order of magnitude. Strong dependence of (gamma) on wavelength and state of radiation polarization has been observed. Two-photon absorption as a dominant nonlinear process in investigated fullerenes under picosecond excitation at 527.5 nm wavelength is discussed.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Oleg B. Mavritsky, Andrey N. Egorov, Anatolius N. Petrovsky, Konstantin V. Yakubovsky, Werner J. Blau, Declan N. Weldon, and Fryad Z. Henary "Third-order optical nonlinearity of C60 and C70 and their metal derivatives under picosecond laser excitation", Proc. SPIE 2854, Fullerenes and Photonics III, (16 December 1996); https://doi.org/10.1117/12.262987
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