Trapping field assisted backscattering in strong-field photoemission from dielectric nanospheres

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autor(en): Seiffert L, Henning P, Rupp P, Zherebtsov S, Hommelhoff P, Kling MF, Fennel T
Zeitschrift: Journal of Modern Optics
Jahr der Veröffentlichung: 2017
Band: 64
Heftnummer: 10-11
Seitenbereich: 1096-1103
ISSN: 1362-3044
Sprache: Englisch


We study strong-field ionization of dielectric nanospheres and focus on the enhancement of the cut-off energies for backscattering electrons resulting from charge interaction. Though recent studies clearly demonstrated the decisive impact of a surface trapping field on the electron backscattering process, a clear picture of the underlying mechanism is lacking. Here, we provide this picture and present a simple and transparent extension of the famous three-step model of strong-field science by adding a triangular surface trapping potential. We justify this model for the case of dielectric nanospheres based on high-level transport simulations. The analysis of the trapping field assisted backscattering provides a universal scaling of the maximal recollision and backscattering energies as 9 Up and 14.5 Up, respectively, where Up the local ponderomotive potential. The universal nature of the enhancement over the conventional three-step model is of particular interest for the generation of attosecond electron bunches via near-field induced photoemission and high harmonic generation at nanostructures.

FAU-Autoren / FAU-Herausgeber

Hommelhoff, Peter Prof. Dr.
Lehrstuhl für Laserphysik

Autor(en) der externen Einrichtung(en)
Max-Planck-Institute of Quantum Optics (MPQ) / Max-Planck-Institut für Quantenoptik
Universität Rostock


Seiffert, L., Henning, P., Rupp, P., Zherebtsov, S., Hommelhoff, P., Kling, M.F., & Fennel, T. (2017). Trapping field assisted backscattering in strong-field photoemission from dielectric nanospheres. Journal of Modern Optics, 64(10-11), 1096-1103.

Seiffert, Lennart, et al. "Trapping field assisted backscattering in strong-field photoemission from dielectric nanospheres." Journal of Modern Optics 64.10-11 (2017): 1096-1103.


Zuletzt aktualisiert 2018-10-08 um 22:56