S. S. Golik, V. V. Lisitsa, A. Yu. Maior, A. A. Il'in, Yu. S. Tolstonogova, A. V. Borovskii, N. N. Golik, D. Yu. Proschenko, M. Yu. Babii, “Spectral-time characteristics of sodium emission lines at filamentation of femtosecond duration laser pulses in atmospheric aerosol”, Meždunar. nauč.-issled. žurn., 2019, Issue 11(89),Pages <nobr>6

PHYSICS AND MATHEMATICS

Spectral-time characteristics of sodium emission lines at filamentation of femtosecond duration laser pulses in atmospheric aerosol

S. S. Golik^ab, V. V. Lisitsa^ba, A. Yu. Maior^ab, A. A. Il'in^ba, Yu. S. Tolstonogova^ab, A. V. Borovskii^a, N. N. Golik^a, D. Yu. Proschenko^ab, M. Yu. Babii^a

^a Far Eastern Federal University, Vladivostok
^b Institute for Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok

Abstract: The temporal dynamics of the intensity of sodium emission lines (Na I 588.99 and 589.59 nm) generated by filamentation of laser pulses of a titanium-sapphire laser (60 fs, 800 nm, 4.4 mJ) in atmospheric aerosol was obtained in the paper. It was experimentally established that the optimal delay in recording the emission spectra in the filament plasma in an aqueous aerosol with respect to the laser pulse is 4 ns, while the main radiation of the emission lines of the sodium doublet (588.99 and 589.59 nm) is observed up to 10 ns for exposure for a single laser pulse 3 ns.

Keywords: femtosecond pulses, filament, filament emission spectroscopy, water aerosol, sodium, spectrum, temporal dynamics.

DOI: 10.23670/IRJ.2019.89.11.001