title: Broadband emission spectrum dynamics of large water droplets exposed to intense ultrashort laser radiation.
abstract: We report on experiments on the interaction of a gigawatt femtosecond laser pulse train with hanging isolated millimeter-sized water droplets. A transparent droplet experienced explosive boiling-up and emitted light in the visible spectrum as a result of laser-induced plasma formed inside the droplet volume. The droplet emission spectra showed remarkable broadening, depending on the laser power. The role of pulse self-phase modulation in measured spectral broadening when the pulse propagates through the droplet is discussed.
authors: Zuev Institute of Atmospheric Optics SB RAS, 1 Zuev Square, Tomsk, 634021, Russia. ygeints@iao.ru
authors: Yuri E
authors: YE
authors: Geints
authors: Andrey M
authors: AM
authors: Kabanov
authors: Gennadii G
authors: GG
authors: Matvienko
authors: Victor K
authors: VK
authors: Oshlakov
authors: Alexander A
authors: AA
authors: Zemlyanov
authors: Sergey S
authors: SS
authors: Golik
authors: Oleg A
authors: OA
authors: Bukin