Researches achieve ultrafast and tunable terahertz-to-visible light conversion using graphene

Researchers from Helmholtz-Zentrum Dresden-Rossendorf, Catalan Institute of Nanoscience and Nanotechnology (ICN2) and the University of Exeter have demonstrated that the properties and dynamics of electronic heat in graphene allow for a THz-to-visible conversion, which is switchable at a sub-nanosecond time scale. The results show that graphene-based materials can be used to efficiently convert high-frequency signals into visible light.