158 citations · 733 across the 9 of their papers we have counts for
9 papers
Optical Control of Young's Type Double-slit Interferometer for Laser-induced Electron Emission from a Nano-tip
Hirofumi Yanagisawa, Marcelo Ciappina, Christian Hafner +3
Interference experiments with electrons in a vacuum can illuminate both the quantum and the nanoscale nature of the underlying physics. An interference experiment requires two cohe…
Laser-induced asymmetric faceting and growth of nano-protrusion on a tungsten tip
Hirofumi Yanagisawa, Vahur Zadin, Karsten Kunze +7
Irradiation of a sharp tungsten tip by a femtosecond laser and exposed to a strong DC electric field led to gradual and reproducible surface modifications. By a combination of fiel…
The Optical Chirality Flux as a Useful Far-Field Probe of Chiral Near Fields
Lisa V. Poulikakos, Philipp Gutsche, Kevin M. McPeak +4
To optimize the interaction between chiral matter and highly twisted light, quantities that can help characterize chiral electromagnetic fields near nanostructures are needed. Here…
Single Atom Plasmonic Switch
Alexandros Emboras, Jens Niegemann, Ping Ma +5
The atom sets an ultimate scaling limit to Moores law in the electronics industry. And while electronics research already explores atomic scales devices, photonics research still d…
Temporal and spectral disentanglement of laser-driven electron tunneling emission from a solid
Hirofumi Yanagisawa, Sascha Schnepp, Christian Hafner +4
By measuring energy spectra of the electron emission from a sharp tungsten tip induced by few-cycle laser pulses, the laser-field dependence of the emission mechanism was investiga…
Mechanism of Laser-induced Field Emission
Hirofumi Yanagisawa, Matthias Hengsberger, Dominik Leuenberger +4
We have measured electron energy distribution curves (EDCs) of the laser-induced field emission from a tungsten tip. Field emission from photo-excited nonequilibrium electron distr…
Laser-induced Field Emission from Tungsten Tip: Optical Control of Emission Sites and Emission Process
Hirofumi Yanagisawa, Christian Hafner, Patrick Doná +5
Field-emission patterns from a clean tungsten tip apex induced by femtosecond laser pulses have been investigated. Strongly asymmetric field-emission intensity distributions are ob…
Optical Control of Field-Emission Sites by Femtosecond Laser Pulses
Hirofumi Yanagisawa, Christian Hafner, Patrick Doná +5
We have investigated field emission patterns from a clean tungsten tip apex induced by femtosecond laser pulses. Strongly asymmetric modulations of the field emission intensity dis…
Comparison of electromagnetic field solvers for the 3D analysis of plasmonic nano antennas
Johannes Hoffmann, Christian Hafner, Patrick Leidenberger +2
Plasmonic nano antennas are highly attractive at optical frequencies due to their strong resonances - even when their size is smaller than the wavelength - and because of their pot…