Overview of project B09

THz Dynamics of Photo-Excited Charge Carriers on the µm Scale


The goal of this project is the investigation of non-equilibrium charge carrier dynamics in two-dimensional electron gases in different material systems: plasmonic graphene structures, black phosphorus, and oxide heterostructures will allow excitation by various stimuli, e.g. interband or plasmon excitation, and optical phonons driven by THz fields. THz pulses will be utilized to probe the carrier redistribution and relaxation with picosecond temporal and micrometer spatial resolution. The combined results will help to understand the different scattering processes after excitation.




Matthew L. Chin, Sebastian Matschy, Florian Stawitzki, Jayaprakash Poojali, Hassan A. Hafez, Dmitry Turchinovich, Stephan Winnerl, Gagan Kumar, Rachael L. Myers-Ward, Matthew T. Dejarld, Kevin M. Daniels, H Dennis Drew, Thomas E. Murphy and Martin Mittendorff
Observation of Strong Magneto Plasmonic Nonlinearity in Bilayer Graphene Discs
J. Phys. Photonics 3, 01LT01 (2021)
DOI: 10.1088/2515-7647/abd7d0



Martin Mittendorff, Stephan Winnerl and Thomas E. Murphy
2D THz Optoelectronics
Adv. Optical Mater. (in press)
DOI: 10.1002/adom.202001500