Abstract

New enhanced type photomixers for continuous wave (CW) terahertz (THz) generation were fabricated using 3–5 layers and 6–8 layers of graphene material. These multilayer graphene (MLG) sheets were used as 2-D nanoelectrodes on low-temperature-grown (LTG) GaAs photoconductor. The MLG nanoelectrode shows unique properties with high short-circuit current capabilities and reliable high photocurrents. Furthermore, due to the transparency of the MLG, the use of these graphene 2-D nanoelectrodes in THz photomixers allows an efficient optical power illumination for high photocurrent generation and shows a reliable CW THz emission.

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