Radiofrequency conical emission from femtosecond filaments in air

Forestier, B.; Houard, A.; Durand, M.; André, Y. B.; Prade, B.; Dauvignac, J.-Y.; Perret, F.; Pichot, Ch.; Pellet, M.; Mysyrowicz, A.
April 2010
Applied Physics Letters;4/5/2010, Vol. 96 Issue 14, p141111
Academic Journal
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.


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