Strong-Field Above-Threshold Photoemission from Sharp Metal Tips

Schenk M, Krüger M, Hommelhoff P (2010)

Publication Language: English

Publication Type: Journal article, Letter

Publication year: 2010

Journal

Physical Review Letters American Physical Society

Book Volume: 105

Article Number: 257601

URI: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.105.257601

DOI: 10.1103/PhysRevLett.105.257601

Abstract

We present energy-resolved measurements of electron emission from sharp metal tips driven with low energy pulses from a few-cycle laser oscillator. We observe above-threshold photoemission with a photon order of up to 9. At a laser intensity of ∼2×1011  W/cm2 the suppression of the lowest order peak occurs, indicating the onset of strong-field effects. We also observe peak shifting linearly with intensity, with a slope of around −1.0  eV/(1012  W/cm2). We attribute the magnitude of the laser field effects to field enhancement taking place at the tip’s surface.

Authors with CRIS profile

Michael Krüger Lehrstuhl für Laserphysik Peter Hommelhoff Lehrstuhl für Laserphysik

Involved external institutions

Max-Planck-Institute of Quantum Optics (MPQ) / Max-Planck-Institut für Quantenoptik DE Germany (DE)

How to cite

APA:

Schenk, M., Krüger, M., & Hommelhoff, P. (2010). Strong-Field Above-Threshold Photoemission from Sharp Metal Tips. Physical Review Letters, 105. https://doi.org/10.1103/PhysRevLett.105.257601

MLA:

Schenk, Markus, Michael Krüger, and Peter Hommelhoff. "Strong-Field Above-Threshold Photoemission from Sharp Metal Tips." Physical Review Letters 105 (2010).

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