Microwave diagnostics of femtosecond laser-generated plasma filaments

J. Papeer; C. Mitchell; J. Penano; Y. Ehrlich; P. Sprangle; A. Zigler

doi:10.1063/1.3643478

Microwave diagnostics of femtosecond laser-generated plasma filaments

J. Papeer^*, C. Mitchell, J. Penano, Y. Ehrlich, P. Sprangle, A. Zigler

^*Corresponding author for this work

Racah Institute of Physics

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

30 Scopus citations

Abstract

We present a simple non-intrusive experimental method allowing a complete single shot temporal measurement of laser produced plasma filament conductivity. The method is based on filament interaction with low intensity microwave radiation in a rectangular waveguide. The suggested diagnostics allow a complete single shot temporal analysis of filament plasma decay with resolution better than 0.3 ns and high spatial resolution along the filament. The experimental results are compared to numerical simulations, and an initial electron density of 7 × 10¹⁶cm^-3 and decay time of 3 ns are obtained.

Original language	English
Article number	141503
Journal	Applied Physics Letters
Volume	99
Issue number	14
DOIs	https://doi.org/10.1063/1.3643478
State	Published - 3 Oct 2011

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10.1063/1.3643478

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AU - Mitchell, C.

AU - Penano, J.

AU - Ehrlich, Y.

AU - Sprangle, P.

AU - Zigler, A.

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AB - We present a simple non-intrusive experimental method allowing a complete single shot temporal measurement of laser produced plasma filament conductivity. The method is based on filament interaction with low intensity microwave radiation in a rectangular waveguide. The suggested diagnostics allow a complete single shot temporal analysis of filament plasma decay with resolution better than 0.3 ns and high spatial resolution along the filament. The experimental results are compared to numerical simulations, and an initial electron density of 7 × 1016cm-3 and decay time of 3 ns are obtained.

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Microwave diagnostics of femtosecond laser-generated plasma filaments

Abstract

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