Directed transfer of microwave radiation in sliding-mode plasma waveguides produced by ultraviolet laser in atmospheric air.
Experiments have been performed at hybrid Ti:sapphire/KrF laser facility GARPUN-MTW to develop a novel technique to create a hollow-core sliding-mode plasma-filament waveguide for directed transfer of microwave radiation. Efficient multiphoton air ionization was produced by a train of picosecond 1-TW UV pulses at 248 nm wavelength, or by amplitude-modulated 100 ns pulse combining a short-pulse train with a free-running 1-GW pulse, which detached electrons off O2- ions. Multiple filamentation of UV laser radiation in air was observed, and filamentation theory based on resonance-enhanced ionization was developed to explain the experimental results.
Vladimir D
VD
Zvorykin
Andrei A
AA
Ionin
Alexei O
AO
Levchenko
Leonid V
LV
Seleznev
Dmitrii V
DV
Sinitsyn
Igor' V
IV
Smetanin
Nikolai N
NN
Ustinovskii
Alexei V
AV
Shutov