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Comparative performance of HgCdTe photodiodes for heterodyne applicationPhotodiodes used as photomixers in heterodyne applications display quantum efficiencies that are lower than the dc quantum efficiency of the device. Measurement techniques used to obtain dc quantum efficiencies, midband heterodyne quantum efficiencies, and frequency roll off characteristics are described. Measurement results for two HgCdTe photodiodes are given and discussed. It is recommended that photodiodes used in heterodyne applications be tested for heterodyne quantum efficiency over the frequency band of interest for the particular application.
Document ID
19800025175
Document Type
Conference Paper
Authors
Kowitz, H. R. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
October 1, 1980
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
NASA-TP-1745
L-14019
Meeting Information
Heterodyne Systems and Technol. Conf.(Williamsburg, VA)
Accession Number
80N33683
Funding Number(s)
PROJECT: RTOP 506-61-53-04
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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