Сверхкритические флюиды. Теория и практика
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2015, N4, pp. 67-72

V.N. Bagratashvili, V.M. Gordienko, E.I. Mareev, N.V. Minaev, A.V. Ragulskaya, F.V. Potemkin

Supercontinuum Generation under Filamentation Driven by Intense Femtosecond Pulse in Supercritical Xenon and Carbon Dioxide

It is found that supercritical fluids are unique source of multi-octave supercontinuum generated under filamentation driven by intense femtosecond laser pulse. When the laser pulse power exceeds by far the critical power of self-focusing, a supercontinuum with three and half octaves spectrum width (from 350 to 2000 nm) in supercritical xenon is generated. In supercritical carbon dioxide, red wing of supercontinuum has a plateau-like shape in the spectral range from 1400 up to 1900 nm; the blue wing in the spectrum strongly attenuated.

Key words: supercritical fluids, femtosecond filamentation, supercontinuum generation


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