313 citations · 1.2k across the 14 of their papers we have counts for
4 papers · 1 filter
Microscopic view on the ultrafast photoluminescence from photo-excited graphene
Torben Winzer, Richard Ciesielski, Matthias Handloser +3
We present a joint theory-experiment study on ultrafast photoluminescence from photoexcited graphene. Based on a microscopic theory, we reveal two distinct mechanisms behind the oc…
Graphene as Gain Medium for Broadband Lasers
Roland Jago, Torben Winzer, Andreas Knorr +1
In contrast to conventional structures, efficient non-radiative carrier recombination counteracts the appearance of optical gain in graphene. Based on a microscopic and fully quant…
Stacking-dependent energetics and electronic structure of ultrathin polymorphic VVI topological insulator nanofilms
Can Li, Torben Winzer, Aron Walsh +3
Topological insulators represent a paradigm shift in surface physics. The most extensively studied BiSe-type topological insulators exhibit layered structures, wherein neig…
Microscopic description of intraband absorption in graphene: the occurrence of transient negative differential transmission
Faris Kadi, Torben Winzer, Ermin Malic +1
We present a microscopic explanation of the controversially discussed transient negative differential transmission observed in degenerate optical pump-probe measurements in graphen…