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Electron Beam Driven Generation of Frequency-Tunable Isolated Relativistic Subcycle Pulses

Journal article
Authors I. Thiele
Evangelos Siminos
T. Fülöp
Published in Physical Review Letters
Volume 122
ISSN 0031-9007
Publication year 2019
Published at Department of Physics (GU)
Language en
Links https://doi.org/10.1103/PhysRevLett...
Subject categories Optical physics, Computational physics, Accelerator Physics and Instrumentation, Physical Sciences, Plasma physics

Abstract

© 2019 American Physical Society. We propose a novel scheme for frequency-tunable subcycle electromagnetic pulse generation. To this end a pump electron beam is injected into an electromagnetic seed pulse as the latter is reflected by a mirror. The electron beam is shown to be able to amplify the field of the seed pulse while upshifting its central frequency and reducing its number of cycles. We demonstrate the amplification by means of 1D and 2D particle-in-cell simulations. In order to explain and optimize the process, a model based on fluid theory is proposed. We estimate that using currently available electron beams and terahertz pulse sources, our scheme is able to produce millijoule-strong midinfrared subcycle pulses.

Page Manager: Webmaster|Last update: 9/11/2012
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