Low- and high-order nonlinear optical characterization of C60-containing media |
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Authors: | R. A. Ganeev G. S. Boltaev R. I. Tugushev T. Usmanov M. Baba H. Kuroda |
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Affiliation: | (1) Akadempribor Scientific Association, Academy of Sciences of Uzbekistan, Tashkent, 700125, Uzbekistan;(2) Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore, 452013, India |
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Abstract: | Third- and higher-order nonlinear optical processes in fullerenes were studies to define the influence of low-order nonlinearities on the high-order harmonic generation in these media. We measured the nonlinear absorption coefficients of the C60:toluene solution using the 532 and 1064 nm, 50 ps pulses. The high-order harmonic generation was studied during propagation of the 790 nm, 150 fs pulses through the plasmas produced on surfaces containing fullerene powder. These studies have shown that the low-order nonlinearities of fullerenes have no impact on the generation of harmonics in such mediums in the vacuum ultraviolet range at optimal intensity of laser radiation. |
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