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

G. Méchain; T. Olivier; M. Franco; A. Couairon; B. Prade; A. Mysyrowicz

doi:10.1016/j.optcom.2005.11.041

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

G. Méchain, T. Olivier, M. Franco, A. Couairon, B. Prade, A. Mysyrowicz

Laboratory d'Optique Appliquée, ENSTA, CNRS-École Polytechnique

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	322-326
Number of pages	5
Journal	Optics Communications
Volume	261
Issue number	2
DOIs	https://doi.org/10.1016/j.optcom.2005.11.041
Publication status	Published - 15 May 2006

Keywords

Beam-trapping
Conductivity measurements
Femtosecond filamentation
Laser-plasma interactions

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10.1016/j.optcom.2005.11.041

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title = "Femtosecond filamentation in air at low pressures. Part II: Laboratory experiments",

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. M{\'e}chain, T. Olivier, B. Prade, A. Mysyrowicz, Opt. Commun., submitted for publication] are compared and the possible sources of discrepancy are discussed.",

keywords = "Beam-trapping, Conductivity measurements, Femtosecond filamentation, Laser-plasma interactions",

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T2 - Laboratory experiments

AU - Méchain, G.

AU - Olivier, T.

AU - Franco, M.

AU - Couairon, A.

AU - Prade, B.

AU - Mysyrowicz, A.

PY - 2006/5/15

Y1 - 2006/5/15

N2 - 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.

AB - 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.

KW - Beam-trapping

KW - Conductivity measurements

KW - Femtosecond filamentation

KW - Laser-plasma interactions

U2 - 10.1016/j.optcom.2005.11.041

DO - 10.1016/j.optcom.2005.11.041

M3 - Article

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SN - 0030-4018

VL - 261

SP - 322

EP - 326

JO - Optics Communications

JF - Optics Communications

IS - 2

ER -

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

Abstract

Keywords

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