Comparative performance of HgCdTe photodiodes for heterodyne application
Abstract
Photodiodes 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.
- Publication:
-
Presented at the Heterodyne Systems and Technol. Conf
- Pub Date:
- October 1980
- Bibcode:
- 1980hst..conf...25K
- Keywords:
-
- Heterodyning;
- Laser Spectroscopy;
- Photodiodes;
- Quantum Efficiency;
- Direct Current;
- Signal To Noise Ratios;
- Electronics and Electrical Engineering