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Revival of femtosecond laser plasma filaments in air by a nanosecond laser
Abstract : Short lived plasma channels generated through filamentation of femtosecond laser pulses in air can be revived after several milliseconds by a delayed nanosecond pulse. Electrons initially ionized from oxygen molecules and subsequently captured by neutral oxygen molecules provide the long-lived reservoir of low affinity allowing this process. A Bessel-like nanosecond-duration laser beam can easily detach these weakly bound electrons and multiply them in an avalanche process. We have experimentally demonstrated such revivals over a channel length of 50 cm by focusing the nanosecond laser with an axicon.
Cited literature [10 references]
https://hal-polytechnique.archives-ouvertes.fr/hal-00457966
Contributor : Aurélien Houard <>
Submitted on : Friday, March 12, 2010 - 7:53:42 PM
Last modification on : Friday, April 3, 2020 - 1:13:06 AM
Document(s) archivé(s) le : Friday, June 18, 2010 - 9:23:54 PM
Contributor : Aurélien Houard <>
Submitted on : Friday, March 12, 2010 - 7:53:42 PM
Last modification on : Friday, April 3, 2020 - 1:13:06 AM
Document(s) archivé(s) le : Friday, June 18, 2010 - 9:23:54 PM
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