Title :
Noise and dynamical gain studies of GaAs photoconductive detectors
Author :
Vilcot, J.P. ; Decoster, D. ; Raczy, L. ; Constant, M.
Author_Institution :
Université des Sciences et Techniques de Lille, Centre Hyperfréquences et Semiconducteurs, LA CNRS 287, Villeneuve d´Ascq, France
Abstract :
Noise measurements on N-type GaAs planar photoconductive detectors have been made over the 10 MHz¿1.5 GHz frequency range. The dynamical gains of the devices were calculated from noise data and compared with the values obtained using picosecond measurements. In the gigahertz frequency domain, the photodetectors have an internal current gain as observed in the avalanche photodiodes, but no excess noise factor has been found.
Keywords :
III-V semiconductors; electric noise measurement; gain measurement; gallium arsenide; photodetectors; 10 MHz to 1.5 GHz; GaAs photoconductive detectors; avalanche photodiodes; dynamical gain; noise measurements;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840187
