Revival of femtosecond laser plasma filaments in air by a nanosecond laser.
Opt Express
; 17(14): 11450-6, 2009 Jul 06.
Article
en En
| MEDLINE
| ID: mdl-19582060
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.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Óptica y Fotónica
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Rayos Láser
Idioma:
En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2009
Tipo del documento:
Article
País de afiliación:
Francia
Pais de publicación:
EEUU
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ESTADOS UNIDOS
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ESTADOS UNIDOS DA AMERICA
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EUA
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UNITED STATES
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UNITED STATES OF AMERICA
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US
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USA