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.

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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://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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