1 October 1991 Generation-recombination model of the avalanche breakdown, far infrared photodetector
Author Affiliations +
Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 15766E (1991) https://doi.org/10.1117/12.2297943
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland
Abstract
A three-level, generation-recombination model has been developed to explain the unusual response law and ultraphotosensitivity of the Avalanche Breakdown far infrared detector1,2). The detector consists of Sb-doped n-germanium operated at a bias level above the point of impact ionization breakdown. Under these conditions, the signal response current, is, has been shown to depend on far infrared signal power, P, as is = K(P)1/2, where K is a proportionality constant, over more than six orders of magnitude in P. Furthermore, an apparent photomultiplication factor of the order 106 - 107 has been observed. Signals as low as 10-14 watts in a 10-7 sec pulse have been seen, corresponding to the arrival at the detector of only 4-5 photons per pulse. Earlier attempts to provide a model of this detector3), including a two- level scheme by Penin4), have not proven satisfactory.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fielding Brown, "Generation-recombination model of the avalanche breakdown, far infrared photodetector", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 15766E (1 October 1991); doi: 10.1117/12.2297943; https://doi.org/10.1117/12.2297943
PROCEEDINGS
2 PAGES


SHARE
RELATED CONTENT


Back to Top