High visibility in two-color above-threshold photoemission from tungsten nanotips in a coherent control scheme
Paschen T, Förster M, Krüger M, Lemell C, Wachter G, Libisch F, Madlener T, Burgdörfer J, Hommelhoff P (2017)
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2017
Journal
Publisher: Taylor and Francis Ltd.
Book Volume: 64
Pages Range: 1054-1060
Journal Issue: 10-11
URI: https://arxiv.org/abs/1707.03849
DOI: 10.1080/09500340.2017.1281453
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.
Authors with CRIS profile
Timo Paschen
Lehrstuhl für Laserphysik
Michael Förster
Lehrstuhl für Laserphysik
Michael Krüger
Lehrstuhl für Laserphysik
Peter Hommelhoff
Lehrstuhl für Laserphysik
Involved external institutions
Austria (AT)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.
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