Plasma channels during filamentation of a femtosecond laser pulse with wavefront astigmatism in air

Journal Article · Wed Dec 31 00:00:00 EST 2014 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2014V044N12ABEH015472· OSTI ID:22373315

Dergachev, A A; Kandidov, V P; Shlenov, S A ^[1]; Ionin, A A; Mokrousova, D V; Seleznev, L V; Sinitsyn, D V; Sunchugasheva, E S; Shustikova, A P ^[2]

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1. Lomonosov Moscow State University, Faculty of Physics, Moscow (Russian Federation)
2. P N Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

We have demonstrated experimentally and numerically the possibility of controlling parameters of plasma channels formed during filamentation of a femtosecond laser pulse by introducing astigmatism in the laser beam wavefront. It is found that weak astigmatism increases the length of the plasma channel in comparison with the case of aberration-free focusing and that strong astigmatism can cause splitting of the plasma channel into two channels located one after another on the filament axis. (interaction of laser radiation with matter. laser plasma)

• OSTI ID: 22373315
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 44, Issue 12; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIR
BEAM OPTICS
CHROMATIC ABERRATIONS
LASER RADIATION
LASERS
PLASMA
PULSES