Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Peter Hommelhoff"'
Autor:
Lennart Seiffert, Ferenc Krausz, Boris Bergues, Ancyline Maliakkal, Matthias F. Kling, Johannes Blöchl, Peter Hommelhoff, Philipp Rosenberger, Thomas Fennel, Johannes Schötz, Dmitry Zimin
Publikováno v:
Nanophotonics, Vol 10, Iss 14, Pp 3769-3775 (2021)
Nanophotonics
Nanophotonics
Strong-field photoemission from nanostructures and the associated temporally modulated currents play a key role in the development of ultrafast vacuum optoelectronics. Optical light fields could push their operation bandwidth into the petahertz domai
Autor:
Constanze Gerner, Christian Heide, Peter Hommelhoff, Heiko B. Weber, Ignacio Franco, Timo Eckstein, Tobias Boolakee
Publikováno v:
Nano letters. 21(22)
Electronic coherence is of utmost importance for the access and control of quantum-mechanical solid-state properties. Using a purely electronic observable, the photocurrent, we measure a lower bound of the electronic coherence time of 22 ± 4 fs in g
We study the rescattering of photoemitted electrons at aluminium needle tips. For various laser intensities we measure electron energy spectra to identify telltale features of strong-field rescattering, in particular a plateau with near-constant coun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2221717b993f3a52cd8907ac8952ab4e
https://publica.fraunhofer.de/handle/publica/269982
https://publica.fraunhofer.de/handle/publica/269982
Publikováno v:
Journal of Physics: Photonics
Journal of Physics: Photonics, 2020, ⟨10.1088/2515-7647/ab7d82⟩
Journal of Physics: Photonics, 2020, ⟨10.1088/2515-7647/ab7d82⟩
Two-dimensional materials with hexagonal symmetry such as graphene and transition metal dichalcogenides are unique materials to study light-field-controlled electron dynamics inside of a solid. Around the K-point, the dispersion relation represents a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff9c95f4dd8b9eefea0ffd9711fbc0f9
http://arxiv.org/abs/2002.05552
http://arxiv.org/abs/2002.05552
Autor:
Maria T. Schlecht, Christian Heide, J. Ristein, Peter Hommelhoff, Tobias Boolakee, Heiko B. Weber, Christian Ott, Fabian Wagner
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics
We investigate the transport of optically injected currents in graphene, a (semi-) metal with exceptional optical and electronic properties. We have recently shown that ultrashort laser pulses with low temporal symmetry drive coupled intraband motion
Publikováno v:
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Nonperturbative electron dynamics inside of solids under strong optical fields has recently found particular attention. Light-field driven effects such as high-harmonic generation and sub-optical-cycle interband population transfer have been reported
Publikováno v:
New Journal of Physics. 21:045003
Ultrafast control of electron dynamics in solid state systems has recently found particular attention. By increasing the electric field strength of laser pulses, the light-matter interaction in solids might turn from a perturbative into a novel non-p
Autor:
Axel Munk, Georg Herink, Michael Krüger, Daniel R. Solli, Claus Ropers, Sergey V. Yalunin, Manuel Diehn, Peter Hommelhoff
Publikováno v:
Annalen der Physik. 525:L12-L18
This article presents a quantum mechanical treatment of strong-field photoelectron emission from nanostructures. The effects of a spatial inhomogeneity of the optical near-field are identified. Furthermore, the importance of electron scattering at th
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 51:172001
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 51:134001
We investigate the process of phase-controlled high-order above-threshold photoemission from sharp metallic nanotips under bichromatic laser fields. Experimental photoelectron spectra resulting from two-color excitation with a moderately intense near