Features of the electron density dynamics in the filamentation of femtosecond laser radiation in air at elevated pressure

Features of the electron density dynamics in the filamentation of femtosecond laser radiation in air at elevated pressure

The electron density in the plasma channel of a femtosecond filament in air at pressures from 1 to is measured at different instants, starting from the ionisation onset and up to several hundreds of picoseconds after it. The initial electron density is found to increase sharply in the pressure range...

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Veröffentlicht in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2016-01, Vol.46 (4), p.332-334
Hauptverfasser: Chizhov, P.A., Bukin, V.V., Ushakov, A.A., Garnov, S.V.
Format: Artikel
Sprache:eng
Schlagworte:
AIR
ATOMIC AND MOLECULAR PHYSICS
Channels
Dynamics
ELECTRON DENSITY
Femtosecond
femtosecond lasers
filamentation
FILAMENTS
interferometry
IONIZATION
LASER RADIATION
Lasers
PLASMA
PRESSURE RANGE
Quantum electronics
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Beschreibung
Zusammenfassung:The electron density in the plasma channel of a femtosecond filament in air at pressures from 1 to is measured at different instants, starting from the ionisation onset and up to several hundreds of picoseconds after it. The initial electron density is found to increase sharply in the pressure range of . The plasma channel diameter is found to decrease with an increase in pressure from 3 to .
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL16069