Title :
Highly efficient terahertz detection by optical mixing in a Fabry-Perot cavity LT-GaAs photoconductor
Author :
Peytavit, Emilien ; Pavanello, Fabio ; Ducournau, Guillaume ; Lampin, Jean-Francois
Author_Institution :
Inst. d´Electron., de Microelectron. et de Nanotechnol., Univ. de Lille 1, Villeneuve-d´Ascq, France
Abstract :
It is shown from accurate on-wafer measurement that a low-temperature-grown GaAs photoconductor using a metallic mirror Fabry-Perot cavity can serve as highly efficient optoelectronic heterodyne mixer in the terahertz frequency range. Conversion losses of 22 dB at 100 GHz and ~27 dB at 300 GHz were measured, which is an improvement by a factor of about 40 dB as compared with the previous values obtained with photoconductors.
Keywords :
III-V semiconductors; gallium arsenide; heterodyne detection; millimetre wave detectors; mirrors; optical losses; optical sensors; photoconducting devices; photoconducting materials; photodetectors; submillimetre wave detectors; Fabry-Perot cavity LT-photoconductor; GaAs; frequency 100 GHz; frequency 300 GHz; highly efficient terahertz detection; loss 22 dB; low-temperature-grown photoconductor; metallic mirror Fabry-Perot cavity; on-wafer measurement; optoelectronic heterodyne mixer; Cavity resonators; Frequency measurement; Loss measurement; Optical mixing; Photoconducting materials; Radio frequency; Semiconductor device measurement;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956154
