Sep 15 – 21, 2019
Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy
Europe/Rome timezone

Generation and characterization of attosecond micro-bunched electron pulse trains via dielectric laser acceleration

Sep 16, 2019, 6:00 PM
Sala Bonaparte 1 (SB1) (Hotel Hermitage)

Sala Bonaparte 1 (SB1)

Hotel Hermitage

talk WG3 - Electron beams from electromagnetic structures, including dielectric and laser-driven structures WG3 - Dielectric Acceleration


Norbert Schönenberger (Friedrich-Alexander-Universität Erlangen-Nürnberg)


Dielectric laser acceleration is a versatile scheme to accelerate and control electrons with femtosecond laser pulses in nanophotonic structures. We show recent results of the generation of a train of electron pulses with individual pulse durations as short as 270 +/- 80 attoseconds. We achieve these attosecond micro-bunch trains based on two subsequent dielectric laser interaction regions connected by a free-space electron drift section, all on a single photonic chip. In the first interaction region (the modulator), an energy modulation is imprinted on the electron pulse. During free propagation, this energy modulation evolves into a charge density modulation, called ballistic bunching. The resulting density modulation is probed in the second interaction region (the analyzer). This work represents a crucial step for dielectric laser accelerators, namely to enable phase synchronous acceleration of a significant fraction of electrons injected into the device. In addition, ultrafast experiments with these attosecond electron pulse trains come to mind.

Primary authors

Norbert Schönenberger (Friedrich-Alexander-Universität Erlangen-Nürnberg) Mrs Anna Mittelbach (Chair for Laserphysics, FAU) Peyman Yousefi (Friedrich Alexander University of Erlangen Nürnberg) Joshua McNeur (Friedrich Alexander University) Uwe Niedermayer (TU-Darmstadt) Peter Hommelhoff (University of Erlangen and Max Planck Institute of Quantum Optics)

Presentation materials