Onset of charge interaction in strong-field photoemission from nanometric needle tips

Schoetz J, Seiffert L, Maliakkal A, Blöchl J, Zimin D, Rosenberger P, Bergues B, Hommelhoff P, Krausz F, Fennel T, Kling MF (2021)

Publication Language: English

Publication Type: Journal article

Publication year: 2021

Journal

Nanophotonics De Gruyter Open

Book Volume: 10

Pages Range: 3769–3775

Article Number: 20210276

URI: https://www.degruyter.com/document/doi/10.1515/nanoph-2021-0276/html

DOI: 10.1515/nanoph-2021-0276

Abstract

Strong-field photoemission from nanostructures and the associated temporally modulated currents play a key role in the development of ultrafast vacuum optoelectronics. Optical light fields could push their operation bandwidth into the petahertz domain. A critical aspect of their functionality in the context of applications is the impact of charge interaction effects. Here, we investigated the photoemission and photocurrents from nanometric tungsten needle tips exposed to carrier-envelope phase (CEP)-controlled few-cycle laser fields. We report a characteristic rapid increase in the intensity-rescaled cutoff energies of emitted electrons beyond a certain intensity value. By comparison with simulations, we identify this feature as the onset of charge-interaction dominated photoemission dynamics. Our results are anticipated to be relevant also for the strong-field photoemission from other nanostructures, including photoemission from plasmonic nanobowtie antennas used in CEP-detection and for PHz-scale devices.

Authors with CRIS profile

Peter Hommelhoff Lehrstuhl für Laserphysik

Involved external institutions

Max-Planck-Institute of Quantum Optics (MPQ) / Max-Planck-Institut für Quantenoptik DE Germany (DE) Universität Rostock DE Germany (DE) Ludwig-Maximilians-Universität (LMU) DE Germany (DE)

How to cite

APA:

Schoetz, J., Seiffert, L., Maliakkal, A., Blöchl, J., Zimin, D., Rosenberger, P.,... Kling, M.F. (2021). Onset of charge interaction in strong-field photoemission from nanometric needle tips. Nanophotonics, 10, 3769–3775. https://doi.org/10.1515/nanoph-2021-0276

MLA:

Schoetz, Johannes, et al. "Onset of charge interaction in strong-field photoemission from nanometric needle tips." Nanophotonics 10 (2021): 3769–3775.

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