Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Dominik Ehberger"'
Publikováno v:
Structural Dynamics, Vol 5, Iss 4, Pp 044303-044303-9 (2018)
Time-resolved electron energy analysis and loss spectroscopy can reveal a wealth of information about material properties and dynamical light-matter interactions. Here, we report an all-optical concept for measuring energy spectra of femtosecond elec
Externí odkaz:
https://doaj.org/article/a06301b30ec54be78e0949f5f0080598
Autor:
Kathrin J. Mohler, Dominik Ehberger, Peter Baum, Lutz Waldecker, Thomas Vasileiadis, Ralph Ernstorfer
Publikováno v:
Physical Review Applied
Compression of electron pulses with terahertz radiation offers short pulse durations and intrinsic subcycle stability in time. We report the generation of 12-fs (rms), 28-fs (FWHM) electron pulses at a kinetic energy of 75 keV by using single-cycle t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4baaad083bf7f64063b89aed7eea9b4e
Publikováno v:
Physical Review Letters
We report the all-optical generation and characterization of tilted electron pulses by means of single-cycle terahertz radiation at an electron-transmitting mirror at slanted orientation. Femtosecond electron pulses with a chosen tilt angle are produ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::953dc9194a48549d3d54b8595400f91a
Publikováno v:
Nonlinear Optics.
We report the all-optical compression and characterization of ultrashort electron pulses by laser-generated THz field cycles, providing a concept for electron diffraction and microscopy on electronic time scales.
Publikováno v:
Applied Physics B. 122
Many applications of THz radiation require high fields and high repetition rates at the same time, implying substantial average power levels. Here, we report high-power Cherenkov-type THz generation in a LiNbO3 slab covered with a silicon prism outco
Autor:
Andreas Blumenstein, Dominik Ehberger, Tamas Nagy, Bo-Han Chen, Peter Baum, Peter Simon, Martin Kretschmar
Publikováno v:
Optics Express. 26:3861
We investigate two approaches for the spectral broadening and compression of 1-ps long pulses of a thin-disk laser amplifier running at 50 kHz repetition rate at 1030 nm wavelength. We find that with a single, 2.66-m long stretched flexible hollow fi
Autor:
Anoush Aghajani-Talesh, Dominik Ehberger, Sebastian Thomas, Philipp Weber, Peter Hommelhoff, John Breuer, Michael Krüger, Jakob Hammer, Michael Förster, Takuya Higuchi, Joshua McNeur
Publikováno v:
2014 27th International Vacuum Nanoelectronics Conference (IVNC).
We will report on control of electrons near nanoscale structures. In the first part of the talk, we will present results on strong-field physics in the near-field of a nanometer sharp needle tip. In particular, we will focus on field enhancement meas
Publikováno v:
2014 27th International Vacuum Nanoelectronics Conference (IVNC).
Autor:
Michael Förster, Michael Krüger, Johannes Hoffrogge, Peter Hommelhoff, Peter Baum, Jan Paul Stein, Dominik Ehberger, Jakob Hammer
We present a nano-scale photoelectron source, optimized towards ultrashort pulse durations and well-suited for time-resolved diffraction experiments. A tungsten tip, mounted in a suppressor-extractor electrode configuration, allows the generation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b7db86c8ad1dc5d115cd83be354c293
https://opus4.kobv.de/opus4-fau/frontdoor/index/index/docId/4481
https://opus4.kobv.de/opus4-fau/frontdoor/index/index/docId/4481
Autor:
Max Eisele, Alexander Högele, Jakob Hammer, Peter Hommelhoff, Dominik Ehberger, Michael Krüger, Jonathan Noé
We report on a quantitative measurement of the spatial coherence of electrons emitted from a sharp metal needle tip. We investigate the coherence in photoemission triggered by a near-ultraviolet laser with a photon energy of 3.1 eV and compare it to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e006487c5804bfa4a4c5ade5dc320531