Patent ID: 9224899
Filing Date: 2015-12-29
Classification: H01L

Abstract:
1. A photomixer for generating THz radiation, the photomixer comprising a photodetector (PHD) coupled to an antenna (AT) for THz radiation, the photodetector comprising a layer (CE) of photoconductive material suitable for absorbing optical radiation, said layer presenting a thickness (e) less than the absorption length of said radiation by the photoconductive material and extending between a so-called “top” conductive electrode (ES) that is at least partially transparent to optical infrared radiation and a so-called “bottom” conductive electrode (EI) that is reflective, wherein said bottom and top conductive electrodes form a resonant cavity for said optical infrared radiation, and said top and bottom conductive electrodes (ES, EI) sandwiching the photoconductive material are metal conductive electrodes, and wherein said top conductive electrode has a thickness of 10 nm.