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Strong-Field Effects and Attosecond Control of Electrons in Photoemission from a Nanoscale Metal Tip

  • M. Krüger
  • M. Schenk
  • P. Hommelhoff
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 125)

Abstract

We focus few-cycle Titanium:sapphire oscillator pulses on a sharp tungsten tip and measure spectra of the emitted electrons. We observe above-threshold photoemission with a photon order of up to nine, peak shifting and peak suppression, and carrier-envelope phase sensitive photoemission. In a first attempt to understand the underlying physics we model the behavior with theory models borrowed from atomic physics, namely the Three-Step Model and an integration of the one-dimensional time-dependent Schrödinger equation. The models match the high-energy part of the spectra surprisingly well, and we infer that re-scattering and much of the well-known underlying physics of the Three-Step Model takes also place here, even though the parameters are such that this is almost surprising; for instance, the classical excursion of the electrons is only slightly larger than one atomic diameter.

Keywords

Oscillator Pulse Emission Window Ponderomotive Energy Field Emission Electron Source Emission Electron Source 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Ultrafast Quantum Optics GroupMax-Planck-Institut für QuantenoptikGarchingGermany

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