Room-temperature terahertz mixer based on the simultaneous electronic and optical excitations of plasma waves in a field effect transistor

摘要

A method for the heterodyne detection of terahertz u0001THzu0002 signals is proposed. A high electronnmobility transistor is used as a nonlinear element, while the optical beating of two laser beamsnexciting plasma waves in the transistor channel plays the role of the THz local oscillator. Highnefficiency and room-temperature operation of such a mixer are demonstrated by numericalnsimulations. © 2010 American Institute of Physics. u0003doi:10.1063/1.3282798