Radiofrequency plasma antenna generated by femtosecond laser filaments in air

We demonstrate tunable radiofrequency emission from a meter-long linear plasma column produced in air at atmospheric pressure. A short-lived plasma column is initially produced by femtosecond filamentation and subsequently converted into a long-lived discharge column by application of an external hi...

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Veröffentlicht in:	Applied physics letters 2012-12, Vol.101 (26)
Hauptverfasser:	Brelet, Y., Houard, A., Point, G., Prade, B., Arantchouk, L., Carbonnel, J., André, Y.-B., Pellet, M., Mysyrowicz, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY AIR ANTENNAS ATMOSPHERIC PRESSURE Barometric pressure Electromagnetic induction EMISSION Femtosecond High voltages HIGH-FREQUENCY DISCHARGES Lasers LIGHT TRANSMISSION Optics Physics PLASMA Plasma (physics) PLASMA PRODUCTION Radiofrequency RADIOWAVE RADIATION
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Beschreibung
Zusammenfassung:	We demonstrate tunable radiofrequency emission from a meter-long linear plasma column produced in air at atmospheric pressure. A short-lived plasma column is initially produced by femtosecond filamentation and subsequently converted into a long-lived discharge column by application of an external high voltage field. Radiofrequency excitation is fed to the plasma by induction and detected remotely as electromagnetic radiation by a classical antenna.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.4773492