Heidelberg 2015 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 61: Ultrashort Laser Pulses II
Q 61.7: Vortrag
Donnerstag, 26. März 2015, 16:00–16:15, K/HS2
Dielectric Laser Acceleration of Subrelativistic Electrons in the Vicinity of a Fused Silica Grating: Recent Results and Future Directions — •Joshua McNeur1, John Breuer2, Jonas Hammer1, Ang Li1, Norbert Schönenberger1, Alexander Tafel1, and Peter Hommelhoff1,2 — 1Department of Physics, Friedrich-Alexander-Universität Erlangen Nürnberg, Staudtstr. 1, D-91058 Erlangen, Germany — 2Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany
Within the last year, Dielectric Laser Acceleration has been demonstrated on multiple fronts (at different electron energies, laser wavelengths and laser pulse energies) [1,2]. The theory [3] and recent demonstration of Dielectric Laser Acceleration of subrelativistic electrons is reviewed. In this experiment, a Ti:Sapphire laser is incident upon a fused silica grating, exciting fields that accelerated 28 keV thermally emitted electrons with a 25 MeV/m acceleration gradient, detected via a retarding field spectrometer and micro channel plate. Upgrades and future directions of this DLA project taking place at Friedrich-Alexander-Universität, including proton acceleration, use of a 2 micron Thulium laser, testing of deflecting and focusing geometries and a laser-triggered electron source, are discussed.
1. Peralta et al., 2013 Nature 503 91
2. Breuer and Hommelhoff, 2013 Phys. Rev. Lett. 111 134803
3. Breuer, McNeur and Hommelhoff, 2014 J. Phys. B: At. Mol. Opt. Phys. 47 234004