Erlangen 2022 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 37: Quantum Optics (Miscellaneous) V

Q 37.1: Hauptvortrag

Mittwoch, 16. März 2022, 14:00–14:30, Q-H14

Nanophotonic structure-mediated free-electron acceleration and manipulation in the classical and quantum regimes — •Roy Shiloh — Chair of Laser Physics, Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Staudtstrasse 1, 91058 Erlangen, Germany

Dielectric laser accelerators (DLA) are, fundamentally, photons interacting with free electrons, with a nanostructure mediating energy and momentum conservation. The potential of accelerating electrons to high energies using this method recently propelled DLA skywards; fabricated using standard (silicon) clean-room technology, their size advantage over conventional RF accelerator schemes promise table-top compact sources of high-energy electrons for tunable radiation generation and medical treatments. To reach this goal, we have already demonstrated electron beam transport on a nanophotonic chip, using the alternating phase focusing technique [1,2]. However, using the same setup we can also demonstrate quantum photon-electron interaction such as photon-induced electron-microscopy (PINEM). Observable as a spectral comb in the free electron wavepacket's energy spectrum, where the peaks are photon-energy separated, we measured this in a scanning electron microscope for the first time [3].

[1] Shiloh, Illmer, Chlouba, Yousefi, N. Schönenberger, Niedermayer, Mittelbach, and Hommelhoff, Nature 592, 498 (2021); [2] Shiloh, Chlouba, and Hommelhoff, J. Vac. Sci. Technol. B (2022); [3] Shiloh, Chlouba, and Hommelhoff, arxiv.org/abs/2110.00764 (2021)