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Proceedings Paper

Enhanced electron acceleration via ultra-intense laser interaction with structured targets
Author(s): Luca Fedeli; Andrea Sgattoni; Giada Cantono; I. Prencipe; M. Passoni; O. Klimo; J. Proska; Andrea Macchi; T. Ceccotti
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Paper Abstract

The generation of energetic electrons by the interaction of a short laser pulse with solid “grating” targets, having a periodic groove on the irradiated surface, has been investigated in a regime of ultrahigh contrast (1012) and relativistically strong intensity (> 1019W/cm2). A strong enhancement of both the energy and number of electrons emitted from the target, with respect to at targets, has been observed for incidence angles close to the resonant condition for surface wave excitation. In particular we identified bunches of electrons with energies exceeding 10 MeV which are emitted in a direction close to the target surface. The experimental results are well reproduced by a three-dimensional particle-in-cell simulation, which confirms the dominant role of the surface wave in accelerating the electrons. These results are a step forward the development of high field plasmonics for a number of applications.

Paper Details

Date Published: 14 May 2015
PDF: 8 pages
Proc. SPIE 9514, Laser Acceleration of Electrons, Protons, and Ions III; and Medical Applications of Laser-Generated Beams of Particles III, 95140R (14 May 2015); doi: 10.1117/12.2178816
Show Author Affiliations
Luca Fedeli, Istituto Nazionale di Ottica (Italy)
Andrea Sgattoni, Istituto Nazionale di Ottica (Italy)
Giada Cantono, CEA-Ctr. de SACLAY (France)
I. Prencipe, Politecnico di Milano (Italy)
M. Passoni, Politecnico di Milano (Italy)
O. Klimo, Czech Technical Univ. in Prague (Czech Republic)
J. Proska, Czech Technical Univ. in Prague (Czech Republic)
Andrea Macchi, Istituto Nazionale di Ottica (Italy)
T. Ceccotti, CEA-DSM (France)


Published in SPIE Proceedings Vol. 9514:
Laser Acceleration of Electrons, Protons, and Ions III; and Medical Applications of Laser-Generated Beams of Particles III
Kenneth W. D. Ledingham; Eric Esarey; Carl B. Schroeder; Klaus Spohr; Paul McKenna; Florian J. Grüner; Paul R. Bolton, Editor(s)

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