Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 22: Attosecond Science

A 22.3: Vortrag

Mittwoch, 8. März 2017, 15:15–15:30, N 2

Attosecond Electron Scattering in Dielectrics — •L. Seiffert¹, Q. Liu^2,3, S. Zherebtsov^2,3, A. Trabattoni^4,5, P. Rupp^2,3, M. C. Castrovilli⁶, M. Galli^4,6, F. Süßmann^2,3, K. Wintersperger², J. Stierle², G. Sansone^4,6, L. Poletto⁶, F. Frassetto⁶, I. Halfpap⁷, V. Mondes⁷, C. Graf⁷, E. Rühl⁷, F. Krausz^2,3, M. Nisoli^4,6, T. Fennel^{1, 8}, F. Calegari^5,6,9, and M. Kling^2,3 — ¹Universität Rostock — ²MPQ Garching — ³LMU München — ⁴Politecnico di Milano — ⁵Center for Free-Electron Laser Science, DESY — ⁶National Research Council of Italy — ⁷FU Berlin — ⁸MBI Berlin — ⁹University of Hamburg

Scattering of electrons in dielectrics is at the heart of laser nanomachining, light-driven electronics, and radiation damage. Accurate theoretical predictions of the underlying dynamics require precise knowledge of the low-energy electron transport involving elastic and - even more important - inelastic collisions. Here, we demonstrate real-time access to electron scattering in isolated SiO₂ nanoparticles via attosecond streaking [1]. Utilizing semiclassical Monte-Carlo trajectory simulations [2,3] we identify that the presence of the field inside the dielectric cancels the influence of elastic scattering, enabling selective characterization of the inelastic scattering time [4].

[1] R. Kienberger et al., Nature 427, 817-821 (2004)

[2] F. Süßmann et al., Nat Commun. 6, 7944 (2015)

[3] L. Seiffert et al., Appl. Phys. B 122, 1-9 (2016)

[4] L. Seiffert et al., submitted