Seminars

Hamburg Photon Science Colloquium | Graphene terahertz photonics

by Mischa Bonn (Max Planck Institute for Polymer Research, Mainz, Germany)

Friday, January 17, 2020 from to (Europe/Berlin)
at DESY, Hamburg ( CFEL SR I-III (Bldg. 99) )
Description
Graphene is an attractive optoelectronic material owing to its high charge carrier mobility. Ultrashort terahertz (THz) pulses interact strongly with charge carriers in graphene, allowing to determine graphene‘s photoconductivity on ultrafast timescales. Moreover, charge carrier heating is highly efficient already when moderately strong THz fields are applied. This process can be used to generate higher harmonics of THz radiation with extreme efficiency.