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Q: Fachverband Quantenoptik und Photonik

Q 58: Matter Wave Optics

Q 58.4: Poster

Thursday, March 17, 2022, 16:30–18:30, P

Femtosecond laser-triggered electron emission from cooled needle tips — •Manuel Knauft, Norbert Schönenberger, Stefan Meier, Jonas Heimerl, and Peter Hommelhoff — Department Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen

Dielectric laser acceleration offers a miniaturized framework of creating high-energy beams of charged particles, enabling applications where large-scale accelerators are unfeasible. The nanometric dimensions of these require electron sources with utmost beam quality. Similarly, in the context of microscopy and fundamental research coherent electron sources are of high specific interest. It is well known that reducing the operating temperature of the tip emitter positively influences coherence. In this contribution, we present initial experimental results from cooled needle emitters triggered with femtosecond laser pulses.