Electronic devices for the generation of electromagnetic radiation are provided. Also provided are methods for using the devices to generate electromagnetic radiation. The radiation sources include an anisotropic electrically conducting thin film that is characterized by a periodically varying charge carrier mobility in the plane of the film. The periodic variation in carrier mobility gives rise to a spatially varying electric field, which produces electromagnetic radiation as charged particles pass through the film.
REFERENCE TO GOVERNMENT RIGHTS
This invention was made with government support under FA9550-08-1-0337 awarded by the USAF/AFOSR and DE-FG02-03ER46028 awarded by the US Department of Energy. The government has certain rights in the invention.