Greatly enhanced continuous-wave terahertz emission by nano-electrodes in a photoconductive photomixer

• DOI: 10.1038/nphoton.2011.322
• Publication Date: 2012-01-13T06:24:13Z
• Authors: H. Tanoto; J. H. Teng; Q. Y. Wu; M. Sun; Z. N. Chen; S. A. Maier; B. Wang; C. C. Chum; G. Y. Si; A. J. Danner; S. J. Chua
• Keywords: Photomixing; Photoconductivity; Terahertz gap; Terahertz time-domain spectroscopy

Researchers report a room-temperature continuous-wave terahertz source based on a nanogap electrode structure in the active region of a photoconductive photomixer. The device has an emission linewidth of less than 10 MHz, an emission frequency of 0.3–1.6 THz and a maximum output power of 100 mW at 0.4 THz.