Bochum 2015 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 20: Laser Plasmas I

P 20.3: Vortrag

Mittwoch, 4. März 2015, 14:45–15:00, HZO 30

Bright subcycle XUV bursts from a single dense relativistic electron sheet — Wenjun Ma¹, •Jianhui Bin^1,2, Hongyong Wang^2,3, Mark Yeung^4,5, Christian Kreuzer¹, Peta Foster⁶, Xueqing Yan³, Bredan Dromey⁴, Juergen Meyer-ter-Vehn², Matthew Zepf^4,5, and Joerg Schreiber^1,2 — ¹Fakultät für Physik, Ludwig-Maximilians-University, Munich, Germany — ²Max-Planck-Institute of Quantum Optics,Garching, Germany, — ³State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China, — ⁴Department of Physics and Astronomy, Queen's University Belfast, Belfast, UK, — ⁵Helmholtz Institute Jena, Jena, Germany, — ⁶Central Laser Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, UK

Relativistic electrons are prodigious sources of photons. Beyond classical accelerators, ultra-intense laser interactions are of particular interest as they allow the coherent motion of relativistic electrons to be controlled and exploited as sources of radiation. Here we report that bright extreme ultraviolet (XUV) radiation was generated when double foil targets separated by a low density plasma were irradiated by a PW-class laser. Simulations show that a dense sheet of relativistic electrons is formed during the interaction of the laser with the tenuous plasma between the two foils. The coherent motion of the electron sheet as it transits the second foil results in a subcycle XUV pulse, consistent with our experimental observations.