Resonant optical nonlinearity of fullerenes in free-standing polymethyl methacrylate films
- 15 September 1993
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 74 (6) , 3669-3672
- https://doi.org/10.1063/1.354508
Abstract
We have prepared films of polymethyl methacrylate in which fullerenes (a mixture of C60 and C70) are uniformly embedded. By performing both degenerate four-wave mixing experiments and irradiance-dependent transmission measurements with nanosecond laser pulses of 608-nm wavelength, the third-order nonlinear optical susceptibility of these films is determined to be of the order of 10−10 esu. This susceptibility is dominated by its imaginary part. Excited-state absorption is the main mechanism responsible for the observed nonlinear susceptibility.This publication has 16 references indexed in Scilit:
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