Lightwave-controlled electron dynamics in graphene

Heide C, Higuchi T, Ullmann K, Weber HB, Hommelhoff P (2019)

Publication Type: Conference contribution

Publication year: 2019

Pages Range: 05002

Conference Proceedings Title: 205

URI: https://www.epj-conferences.org/articles/epjconf/abs/2019/10/epjconf_up2019_05002/epjconf_up2019_05002.html

DOI: 10.1051/epjconf/201920505002

Open Access Link: https://www.epj-conferences.org/articles/epjconf/abs/2019/10/epjconf_up2019_05002/epjconf_up2019_05002.html

Abstract

We demonstrate that currents induced in graphene by ultrashort laser pulses are sensitive to the exact shape of the electric-field waveform. By increasing the field strength, we found a transition of the light–matter interaction from the weak-field to the strong-field regime at around 2 V/nm, where intraband dynamics influence interband transitions. In this strong-field regime, the light-matter interaction can be described by the wavenumber trajectories of electrons in the reciprocal space. For linearly polarized light the electron dynamics are governed by repeated sub-optical-cycle Landau-Zener transitions between the valence- and conduction band, resulting in Landau-Zener-Stuckelberg interference, whereas for circular polarized light this interference is supressed.

Authors with CRIS profile

Christian Heide Lehrstuhl für Laserphysik Takuya Higuchi Lehrstuhl für Laserphysik Konrad Ullmann Chair of Applied Physics Heiko Weber Chair of Applied Physics Peter Hommelhoff Lehrstuhl für Laserphysik

How to cite

APA:

Heide, C., Higuchi, T., Ullmann, K., Weber, H.B., & Hommelhoff, P. (2019). Lightwave-controlled electron dynamics in graphene. In EPJ Web Conf. (Eds.), 205 (pp. 05002).

MLA:

Heide, Christian, et al. "Lightwave-controlled electron dynamics in graphene." Proceedings of the XXI International Conference on Ultrafast Phenomena 2018 (UP 2018) Ed. EPJ Web Conf., 2019. 05002.

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