Analysis of laser wakefield dynamics in capillary tubes

N. E. Andrew, K. Cassou, F. Wojda, G. Genoud, M. Burza, O. Lundh, A. Persson, B. Cros, V. E. Fortov, C. G. Wahlstrom

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)

Abstract

A general approach to the modifications of the spectrum of a laser pulse interacting with matter is elaborated and used for spectral diagnostics of laser wakefield generation in guiding structures. Analytical predictions of the laser frequency red shift due to the wakefield excited in a capillary waveguide are confirmed by self-consistent modeling results. The role of ionization blue shift, and nonlinear laser pulse and wakefield dynamics on the spectrum modification, is analyzed for recent experiments on plasma wave excitation by an intense laser pulse guided in hydrogen-filled glass capillary tubes up to 8 cm long. The dependence of the spectral frequency shift, measured as a function of filling pressure, capillary tube length and incident laser energy, is in excellent agreement with the simulation results, and the associated longitudinal accelerating field is in the range 1-10 GV m-1.

Original languageEnglish
Article number045024
JournalNew Journal of Physics
Volume12
DOIs
Publication statusPublished - 30 Apr 2010
MoE publication typeNot Eligible

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capillary tubes
lasers
pulses
wave excitation
plasma waves
blue shift
red shift
frequency shift
waveguides
ionization
glass
hydrogen
predictions
simulation

Cite this

Andrew, N. E., Cassou, K., Wojda, F., Genoud, G., Burza, M., Lundh, O., ... Wahlstrom, C. G. (2010). Analysis of laser wakefield dynamics in capillary tubes. New Journal of Physics, 12, [045024]. https://doi.org/10.1088/1367-2630/12/4/045024
Andrew, N. E. ; Cassou, K. ; Wojda, F. ; Genoud, G. ; Burza, M. ; Lundh, O. ; Persson, A. ; Cros, B. ; Fortov, V. E. ; Wahlstrom, C. G. / Analysis of laser wakefield dynamics in capillary tubes. In: New Journal of Physics. 2010 ; Vol. 12.
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Andrew, NE, Cassou, K, Wojda, F, Genoud, G, Burza, M, Lundh, O, Persson, A, Cros, B, Fortov, VE & Wahlstrom, CG 2010, 'Analysis of laser wakefield dynamics in capillary tubes', New Journal of Physics, vol. 12, 045024. https://doi.org/10.1088/1367-2630/12/4/045024

Analysis of laser wakefield dynamics in capillary tubes. / Andrew, N. E.; Cassou, K.; Wojda, F.; Genoud, G.; Burza, M.; Lundh, O.; Persson, A.; Cros, B.; Fortov, V. E.; Wahlstrom, C. G.

In: New Journal of Physics, Vol. 12, 045024, 30.04.2010.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Andrew, N. E.

AU - Cassou, K.

AU - Wojda, F.

AU - Genoud, G.

AU - Burza, M.

AU - Lundh, O.

AU - Persson, A.

AU - Cros, B.

AU - Fortov, V. E.

AU - Wahlstrom, C. G.

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AB - A general approach to the modifications of the spectrum of a laser pulse interacting with matter is elaborated and used for spectral diagnostics of laser wakefield generation in guiding structures. Analytical predictions of the laser frequency red shift due to the wakefield excited in a capillary waveguide are confirmed by self-consistent modeling results. The role of ionization blue shift, and nonlinear laser pulse and wakefield dynamics on the spectrum modification, is analyzed for recent experiments on plasma wave excitation by an intense laser pulse guided in hydrogen-filled glass capillary tubes up to 8 cm long. The dependence of the spectral frequency shift, measured as a function of filling pressure, capillary tube length and incident laser energy, is in excellent agreement with the simulation results, and the associated longitudinal accelerating field is in the range 1-10 GV m-1.

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