Berlin 2024 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 30: Ultrafast Phenomena II
HL 30.4: Vortrag
Mittwoch, 20. März 2024, 10:45–11:00, EW 015
Lightwave-control of on-chip femtosecond electronics — •Johannes Schmuck1,2, Johannes Gröbmeyer1,2, Maximilian Auers1,2, Nina Pettinger1,2, Sergey Zherebtsov1,2, and Alexander Holleitner1,2 — 1Walter Schottky Institute and Physics Department, TU Munich, Munich, Germany — 2Munich Center of Quantum Science and Technolgy (MCQST), Munich, Germany
Ultrashort laser pulses allow the generation of light-driven electrical currents [1]. By different photoemission processes the generation of THz electric pulses on on-chip circuits is possible. The corresponding pulses with increased bandwidths up to 10 THz can propagate along macroscopic striplines on a millimeter scale [2]. Rather than using femtosecond photoswitches based on photoconductivity or biased tunneling barriers in nanoscale metal junctions to drive the pulses [3], we investigate direct control of the electronic pulses by single-cycle laser pulses.
[1] M. Ludwig et al. Sub-femtosecond electron transport in a nanoscale gap. Nat. Phys. 16, 341-345 (2020). [2] C. Karnetzky et al. Towards femtosecond on-chip electronics based on plasmonic hot electron nano-emitters. Nat Commun 9, 2471 (2018). [3] J. Gröbmeyer et al. Space-charge limited and ultrafast dynamics in graphene based nano-gaps. Appl. Phys. Lett. 123, 013504 (2023).
Keywords: Femtosecond electronics; Ultrafast photonics; THz pulses