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

Marinchio, H.; Chusseau, L.; Torres, J.; Nouvel, P.; Varani, L.; Sabatini, G.; Palermo, C.; Shiktorov, P.; Starikov, E.; Gružinskis, V.
January 2010
Applied Physics Letters;1/4/2010, Vol. 96 Issue 1, p013502
Academic Journal
A method for the heterodyne detection of terahertz (THz) signals is proposed. A high electron mobility transistor is used as a nonlinear element, while the optical beating of two laser beams exciting plasma waves in the transistor channel plays the role of the THz local oscillator. High efficiency and room-temperature operation of such a mixer are demonstrated by numerical simulations.


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