Heidelberg 2015 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 24: Attosecond physics

A 24.7: Vortrag

Mittwoch, 25. März 2015, 16:00–16:15, C/kHS

Carrier-envelope phase dependencies in photoelectron spectra of a metal nanotip and a noble gas in focused few-cycle laser pulses — •Dominik Hoff¹, Michael Krüger^2,3, Georg Wachter⁴, Lothar Maisenbacher³, Michael Förster², Sebastian Thomas², Joachim Burgdörfer⁴, A. Max Sayler¹, Gerhard G. Paulus¹, and Peter Hommelhoff^2,3 — ¹Helmholtz Institute Jena and Institute for Optics and Quantum Electronics, Jena, Germany — ²Department of Physics, University Erlangen-Nuremberg, Germany — ³and Max Planck Institute of Quantum Optics, Garching, Germany — ⁴Vienna University of Technology, Vienna, Austria

In the last years sensitive probes of the carrier-envelope-phase offset of few-cycle laser pulses have been discovered and developed into high accuracy phase meters. They are based on the re-scattering process of photo-electrons at noble gases like Xe [1] and at nanoscale metal tips [2]. We report on a comparison of the CEP dependence of these two systems which yields insight into the nano-optical response of the tip with attosecond resolution. Further, the nanotip allows for making a quantitative measurement of the behaviour of the carrier-envelope-phase of focused few-cycle laser pulses. These effects are of high interest in the field of nano-optics, plasmonics, attosecond-pulse generation and ultrafast science in general.

[1] T. Wittmann et al., Nature Physics 5, 357 (2009).

[2] M. Krüger, M. Schenk, P. Hommelhoff, Nature 475, 78 (2011).