Abstract
It is found that supercritical fluids are a unique source of multioctave supercontinuum radiation, which is generated upon filamentation of an intense femtosecond laser pulse. If the laser pulse power significantly exceeds the critical power of self-focusing, then a supercontinuum with a width of three and a half spectral octaves (from 350 to 2000 nm) is generated in supercritical xenon. The red wing of supercontinuum generated in supercritical carbon dioxide has the form of a plateau in the range from 1400 to 1900 nm, while the blue wing of the spectrum is almost completely attenuated.
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Original Russian Text © V.N. Bagratashvili, V.M. Gordienko, E.I. Mareev, N.V. Minaev, A.V. Ragulskaya, F.V. Potemkin, 2015, published in Sverkhkriticheskie Flyuidy. Teoriya i Praktika, 2015, Vol. 10, No. 4, pp. 67–72.
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Bagratashvili, V.N., Gordienko, V.M., Mareev, E.I. et al. Supercontinuum generation under filamentation driven by intense femtosecond pulses in supercritical xenon and carbon dioxide. Russ. J. Phys. Chem. B 10, 1211–1215 (2016). https://doi.org/10.1134/S1990793116080042
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DOI: https://doi.org/10.1134/S1990793116080042