Emission of sea aerosol under action of the ultrashort Ti:Sapphire laser pulses at the first and second harmonics
D.V. Apeximov1, O.A. Bukin2, E.E. Bykova1, S.S. Golik3, A.A. Zemlyanov1, A.M. Kabanov1, G.G. Matvienko1, A.V. Petrov1
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch, 1, Academician Zuev square, Tomsk, 634021, Russia
2Institute for Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia, 5, Radio st., Vladivostok, 690041, Russia
3Far Eastern Federal University, 8, Suhanova St., Vladivostok 690950, Russia
Keywords: laser radiation, filamentation, femtosecond pulse, aerosol, optical breakdown, plasma, spectrum
Abstract
The experimental results on investigation of the emission spectra of sea aerosol under action of femtosecond Ti:Sapphire laser pulses of 800 and 400 nm wavelengths are presented. It is shown that emission of a sodium line at 588.9 nm is observed during irradiation by the first harmonic of radiation, while fluorescence of the organic matters dissolved in sea water is excited by the second harmonic.
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