Eur. Phys. J. D 64, 109-114 (2011)
https://doi.org/10.1140/epjd/e2011-20030-7

Regular Article

Low- and high-order nonlinear optical characterization of C₆₀-containing media

¹ Institute of Electronics, Uzbekistan Academy of Sciences, Akademgorodok, 33, Dormon Yoli Street, Tashkent 100125, Uzbekistan
² Faculty of Medicine, Saitama Medical University, 38 Hongou, Moro, Moroyama, Iruma, Saitama 350-0495, Japan

^a e-mail: rashidganeev@mail.ru

Received: 14 January 2011
Received in final form: 11 May 2011
Published online: 27 July 2011

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.