Detection of thin oil films on the water surface with the help of UV filaments
A.A. Ionin1, D.V. Mokrousova1,2, L.V. Seleznev1, D.V. Sinitsyn1, E.S. Sunchugasheva1,2
1P.N. Lebedev Physical Institute of the Russian Academy of Science, 53 Leninskij Prospekt, 119991, Moscow, Russia
2Moscow Institute of Physics and Technology, per. Institutskiy, 9, Moscow Region, Dolgoprudnyiy, 141700, Russia
Keywords: нефть, нефтепродукты, водная поверхность, ультракороткие лазерные импульсы, УФ-излучение, филаменты, флуоресценция, oil, water surface, ultrashort laser pulse, UV emission, filaments, fluorescence
Abstract
Fluorescence of thin oil films on the water surface induced by femtosecond UV laser pulse was studied experimentally. A wide range of laser pulse intensity including filamentation mode was studied. Applicability of this method to femtosecond UV pulses with two central wavelengths of 248 and 372 nm were compared. There was demonstrated that the spatial resolution of the fluorescence localization was not worse than 30 cm.
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