Femtosecond filamentation in air at low pressures. Part II: Laboratory experiments - Archive ouverte HAL Access content directly
Journal Articles Optics Communications Year : 2006

Femtosecond filamentation in air at low pressures. Part II: Laboratory experiments

(1) , (1) , (1) , (2) , (1) , (1)
1
2

Abstract

We present experimental studies of filamentation of a femtosecond laser pulse in air at low pressures. The evolution of the filament has been studied by measuring along the propagation axis the conductivity and the sub-THz emission from the plasma channel. We show experimentally that the filamentation process occurs at pressures as low as 0.2 atm in agreement with numerical simulations. Experimental and numerical results [A. Couairon, M. Franco, G. Méchain, T. Olivier, B. Prade, A. Mysyrowicz, Opt. Commun., submitted for publication] are compared and the possible sources of discrepancy are discussed.

Dates and versions

hal-00461561 , version 1 (04-03-2010)

Identifiers

Cite

Grégoire Méchain, Thomas Olivier, Michel A. Franco, Arnaud Couairon, Bernard Prade, et al.. Femtosecond filamentation in air at low pressures. Part II: Laboratory experiments. Optics Communications, 2006, 261 (2), pp.322-326. ⟨10.1016/j.optcom.2005.11.041⟩. ⟨hal-00461561⟩
96 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More