High visibility in two-color above-threshold photoemission from tungsten nanotips in a coherent control scheme

Journal article
(Original article)


Publication Details

Author(s): Paschen T, Förster M, Krüger M, Lemell C, Wachter G, Libisch F, Madlener T, Burgdörfer J, Hommelhoff P
Journal: Journal of Modern Optics
Publisher: Taylor and Francis Ltd.
Publication year: 2017
Volume: 64
Journal issue: 10-11
Pages range: 1054-1060
ISSN: 0950-0340
eISSN: 1362-3044


Abstract


In this article, we present coherent control of above-threshold photoemission from a tungsten nanotip achieving nearly perfect modulation. Depending on the pulse delay between fundamental ((Formula presented.)) and second harmonic ((Formula presented.)) pulses of a femtosecond fiber laser at the nanotip, electron emission is significantly enhanced or depressed during temporal overlap. Electron emission is studied as a function of pulse delay, optical near-field intensities, DC bias field and final photoelectron energy. Under optimized conditions modulation amplitudes of the electron emission of 97.5% are achieved. Experimental observations are discussed in the framework of quantum-pathway interference supported by local density of states simulations.


FAU Authors / FAU Editors

Förster, Michael Dr.
Lehrstuhl für Laserphysik
Hommelhoff, Peter Prof. Dr.
Lehrstuhl für Laserphysik
Krüger, Michael
Lehrstuhl für Laserphysik
Paschen, Timo
Lehrstuhl für Laserphysik


External institutions
Vienna University of Technology


How to cite

APA:
Paschen, T., Förster, M., Krüger, M., Lemell, C., Wachter, G., Libisch, F.,... Hommelhoff, P. (2017). High visibility in two-color above-threshold photoemission from tungsten nanotips in a coherent control scheme. Journal of Modern Optics, 64(10-11), 1054-1060. https://dx.doi.org/10.1080/09500340.2017.1281453

MLA:
Paschen, Timo, et al. "High visibility in two-color above-threshold photoemission from tungsten nanotips in a coherent control scheme." Journal of Modern Optics 64.10-11 (2017): 1054-1060.

BibTeX: 

Last updated on 2019-10-05 at 07:32