Radiofrequency plasma antenna generated by femtosecond laser filaments in air

Abstract : 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.
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Yohann Brelet, Aurélien Houard, Guillaume Point, Bernard Prade, Leonid Arantchouk, et al.. Radiofrequency plasma antenna generated by femtosecond laser filaments in air. Applied Physics Letters, American Institute of Physics, 2012, 101 (26), pp.264106. ⟨10.1063/1.4773492⟩. ⟨hal-00852044⟩

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