Temporal evolution of femtosecond laser induced plasma filament in air and N2

J. Papeer; D. Gordon; P. Sprangle; M. Botton; A. Zigler

doi:10.1063/1.4838775

Temporal evolution of femtosecond laser induced plasma filament in air and N₂

J. Papeer^*, D. Gordon, P. Sprangle, M. Botton, A. Zigler

^*Corresponding author for this work

Racah Institute of Physics

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

21 Scopus citations

Abstract

We present single shot, high resolution, time-resolved measurements of the relaxation of laser induced plasma filaments in air and in N₂ gas. Based on the measurements of the time dependent electromagnetic signal in a waveguide, an accurate and simple derivation of the electron density in the filament is demonstrated. This experimental method does not require prior knowledge of filament dimensions or control over its exact spatial location. The experimental results are compared to numerical simulations of air plasma chemistry. Results reveal the role of various decay mechanisms including the importance of O₄⁺ molecular levels.

Original language	English
Article number	244102
Journal	Applied Physics Letters
Volume	103
Issue number	24
DOIs	https://doi.org/10.1063/1.4838775
State	Published - 9 Dec 2013

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AU - Botton, M.

AU - Zigler, A.

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Temporal evolution of femtosecond laser induced plasma filament in air and N₂

Abstract

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