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Front. Phys. | doi: 10.3389/fphy.2018.00155

Building an Optical Free-Electron Laser in the Traveling-Wave Thomson-Scattering Geometry

 Klaus Steiniger1, 2*, Daniel Albach1, Michael Bussmann1, Markus Loeser1, Richard Pausch1, 2, Fabian Röser1, 3,  Ulrich Schramm1, 2, Mathias Siebold1 and  Alexander Debus1
  • 1Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz-Gemeinschaft Deutscher Forschungszentren (HZ), Germany
  • 2Technische Universität Dresden, Germany
  • 3Toptica Photonics (Germany), Germany

We show how optical free-electron lasers and enhanced incoherent Thomson scattering radiation sources can be realized with Traveling-Wave Thomson-Scattering (TWTS) today.
Emphasis is put on the realization of optical free-electron lasers (OFELs) with existing state-of-the-art technology for laser systems and electron accelerators.
The conceptual design of optical setups for the preparation of laser pulses suitable for TWTS OFELs and enhanced Thomson sources is presented.
We further provide expressions to estimate the acceptable alignment tolerances of optical components for TWTS OFEL operation.
Examples of TWTS OFELs radiating at 100\,nm, 13.5\,nm and 1.5\,{\AA} as well as an incoherent source producing 30\,keV photons highlight the feasibility of the concept and detail the procedure to determine the optical components parameters of a TWTS setup.

Keywords: Optical FEL, Traveling-wave, Thomson scattering, Pulse-front tilt, Out-of-focus interaction

Received: 28 Sep 2018; Accepted: 17 Dec 2018.

Edited by:

Jerome Faure, UMR7639 Laboratoire d'Optique Appliquée (LOA), France

Reviewed by:

Venu Gopal Achanta, Tata Institute of Fundamental Research, India
Ilia L. Rasskazov, University of Rochester, United States  

Copyright: © 2018 Steiniger, Albach, Bussmann, Loeser, Pausch, Röser, Schramm, Siebold and Debus. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Dr. Klaus Steiniger, Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz-Gemeinschaft Deutscher Forschungszentren (HZ), Dresden, Germany, k.steiniger@hzdr.de