Formation of a conducting channel in air by self-guided femtosecond laser pulses
- 1 October 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 60 (4) , R3505-R3507
- https://doi.org/10.1103/physreve.60.r3505
Abstract
We report a drastic reduction of air resistivity following the passage of a self-guided femtosecond pulse from a Ti:sapphire laser system at 800 nm with energies per pulse between 1 and 14 mJ and a pulse duration of 120 fs. Connected plasma filaments with a length that can exceed 150 cm are created by these pulses. The presence of a conducting plasma channel results from multiphoton ionization of air molecules in the filament core.Keywords
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