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Radiofrequency conical emission from femtosecond filaments in air

2010; American Institute of Physics; Volume: 96; Issue: 14 Linguagem: Inglês

10.1063/1.3378266

1520-8842

Benjamin Forestier, Aurélien Houard, M. Durand, Yves-Bernard André, B. Prade, Jean‐Yves Dauvignac, Florent Perret, Ch. Pichot, M. Pellet, A. Mysyrowicz,

Advanced Chemical Physics Studies

We show that the broadband conical emission associated with filaments in air extends down to the radiofrequency region. This rf emission which originates from the longitudinal oscillation of charged ions formed during filamentation is strongly enhanced by the presence of a longitudinal static electric field.