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 Krüger2,3, Georg Wachter4, Lothar Maisenbacher3, Michael Förster2, Sebastian Thomas2, Joachim Burgdörfer4, A. Max Sayler1, Gerhard G. Paulus1, and Peter Hommelhoff2,31Helmholtz 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).

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