Terahertz physics of graphene, possibly the most nonlinear material we know

​Graphene Centre Seminar with Dmitry Turchinovich, Bielefeld University, Germany


The interaction of graphene with THz electromagnetic waves is dominated by the collective, thermodynamic response of conduction electrons in graphene to the THz excitation. Due to very efficiently energy transfer from the incident electromagnetic field to electronic system of graphene, facilitated by the excellent transport properties of Dirac electrons, the electronic temperature in graphene becomes strongly modulated by the THz excitation. As a result, the THz conductivity of graphene becomes highly nonlinear, leading to very strong THz saturable absorption and extremely efficient THz high harmonics generation in graphene. The effective nonlinear coefficients of graphene in the THz frequency range exceed that of any known material by many orders of magnitude. This possibly makes graphene the most nonlinear material we know.

​Don't miss excellent cake after the talk with the possibility to chat with Prof. Turchinovich

Category Seminar
Location: Kollektorn, lecture room, Kemivägen 9, MC2-huset
Starts: 27 January, 2020, 13:00
Ends: 27 January, 2020, 14:00

Published: Wed 18 Dec 2019.