Zobrazeno 1 - 10
of 261
pro vyhledávání: '"Schäfer Sascha"'
Autor:
Schröder, Alexander, Wendeln, Andreas, Weber, Jonathan T., Mukai, Masaki, Kohno, Yuji, Schäfer, Sascha
Ultrafast transmission electron microscopy (UTEM) has emerged as a versatile technique for the time-resolved imaging of nanoscale dynamics on timescales down to few-hundred attoseconds but the temporal and spatial resolutions are still limited by the
Externí odkaz:
http://arxiv.org/abs/2410.23961
The phase-resolved imaging of confined light fields by homodyne detection is a cornerstone of metrology in nano-optics and photonics, but its application in electron microscopy has been limited so far. Here, we report the mapping of optical modes in
Externí odkaz:
http://arxiv.org/abs/2408.14162
Autor:
Müller, Niklas, Kabil, Soufiane el, Vosse, Gerrit, Hansen, Lina, Rathje, Christopher, Schäfer, Sascha
Recent advancements in electron microscopy have introduced innovative techniques enabling the inelastic interaction of fast electrons with tightly confined and intense light fields. These techniques, commonly summarized under the term photon-induced
Externí odkaz:
http://arxiv.org/abs/2405.12017
In a recently developed methodology termed photon induced near-field electron microscopy (PINEM), the inelastic scattering of electrons off illuminated nanostructures provides direct experimental access to the structure of optical near-field modes an
Externí odkaz:
http://arxiv.org/abs/2405.11495
Autor:
Weber, Jonathan T., Schäfer, Sascha
Surface charging is a phenomenon ubiquitously observable in in-situ transmission electron microscopy of non-conducting specimens as a result of electron beam/sample interactions or optical stimuli and often limits the achievable image stability and s
Externí odkaz:
http://arxiv.org/abs/2308.10272
Novel event-based electron detector platforms provide an avenue to extend the temporal resolution of electron microscopy into the ultrafast domain. Here, we characterize the timing accuracy of a detector based on a TimePix3 architecture using femtose
Externí odkaz:
http://arxiv.org/abs/2307.16666
Autor:
Rathje, Christopher, von Seggern, Rieke, Gräper, Leon A., Kredl, Jana, Walowski, Jakob, Münzenberg, Markus, Schäfer, Sascha
Spintronic emitters are a unique class of terahertz (THz) sources due to their quasi-two-dimensional geometry and thereby their capability to couple to resonator near fields. Global excitation of the emitters often obstructs the intricate details of
Externí odkaz:
http://arxiv.org/abs/2209.02542
Publikováno v:
Journal of Chemical Physics; 7/28/2024, Vol. 161 Issue 4, p1-5, 5p
Autor:
Schäfer, Sascha A.1 (AUTHOR) sascha.schaefer@uni-koeln.de, Jordan, Rose1 (AUTHOR) rose.jordan@uni-koeln.de, Klupsch, Katharina M.1 (AUTHOR), Herwede, Felix Carl-Heinz1 (AUTHOR), Klein, Axel1 (AUTHOR) rose.jordan@uni-koeln.de
Publikováno v:
Inorganics. Jul2024, Vol. 12 Issue 7, p187. 11p.
Autor:
Müller, Niklas, Hock, Vincent, Koch, Holger, Bach, Nora, Rathje, Christopher, Schäfer, Sascha
Transmission electron microscopy is an excellent experimental tool to study the interaction of free electrons with nanoscale light fields. However, up to now, applying electron microscopy to quantum optical investigations was hampered by the lack of
Externí odkaz:
http://arxiv.org/abs/2103.13276