Abstract-Terahertz radiation as a probe of the dynamics of coherently injected photocurrents in quantum well and graphene systems

Kiran M. Rao and J. E. Sipe

https://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.155313

We calculate the terahertz radiation that would be emitted from rotating current densities coherently injected by two-color optical pulses in GaAs and graphene samples in a magnetic field. This is done for realistic experimental geometries and parameters, with scattering and relaxation processes taken into account phenomenologically. Results are presented in the time domain for the expected terahertz signal observed at a detector. We include predictions for bilayer graphene as well as monolayer graphene, and compare with results expected in the absence of a magnetic field.

DOI: http://dx.doi.org/10.1103/PhysRevB.90.155313

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• Published 20 October 2014
• Received 4 June 2014
• Revised 29 August 2014

©2014 American Physical Society