5-10 May 2019
MedILS
Europe/Berlin timezone

Few-cycle shadowgraphy of plasma wave trains

6 May 2019, 18:45
15m
Main Hall (MedILS)

Main Hall

MedILS

Oral Contribution Diagnostics

Speaker

Hao Ding (LMU Munich)

Description

Few-cycle microscopy diagnostic [1] combining femtosecond time resolution and micrometer spatial resolution allows for direct observation of laser-driven plasma waves. By comparing the period of the wave train and the independently measured in-situ plasma density, we find that existing 1D models [2, 3] tend to overestimate the contribution of laser intensity to the non-linear plasma wave lengthening. Quasi-3D particle-in-cell simulations reproducing our observations suggest that transverse intensity gradient plays an important role in the wave train formation. Furthermore, we show experimental evidence on plasma waves driven by electron bunches generated from a laser wakefield accelerator, paving the way towards research of plasma wakefield acceleration at laser facilities [4].

[1] Sävert, A., et al., Physical Review Letters 115, 055002 (2015)
[2] Esarey, E., et al., Reviews of Modern Physics 81, 1229 (2009)
[3] Matsuoka, T., et al., Physical Review Letters 105, 034801 (2010)
[4] Gilljohann, M., et al., Physical Review X 115, 011046 (2019)

Working group Diagnostics

Primary authors

Hao Ding (LMU Munich) A. Döpp (Ludwig-Maximilians-Universität München; Max Planck Institut für Quantenoptik)

Co-authors

M. F. Gilljohann (Ludwig-Maximilians-Universität München; Max Planck Institut für Quantenoptik) Mr Johannes Götzfried (Ludwig-Maximilians-Universität München) Ms Sabine Schindler (Ludwig-Maximilians-Universität München) Mr Ludwig Wildgruber (Ludwig-Maximilians-Universität München) Gavin Cheung (John Adams Institute \& Department of Physics, Clarendon Laboratory, University of Oxford) Prof. Simon Hooker (John Adams Institute & Department of Physics, Clarendon Laboratory, University of Oxford) S. Karsch (Ludwig-Maximilians-Universität München; Max Planck Institut für Quantenoptik)

Presentation Materials