Heterodyne detection of infrared radiation by cryogenically cooled extrinsic photoconductors is reviewed. Operational characteristics of a highly compensated Ge:Hg detector are calculated from experimentally determined material parameters. In many cases wideband, quantum noise limited performance can be obtained only if substantial refrigeration capacity is available at detector operating temperature.
© 1970 Optical Society of America
Original Manuscript: December 10, 1969
Published: August 1, 1970
S. L. Kurtin, G. S. Picus, and C. J. Buczek, "Wideband Optical Heterodyne Performance of Extrinsic Photoconductive Infrared Radiation Detectors," Appl. Opt. 9, 1848-1853 (1970)