The Response of Single Element HgCdTe and InSb Solid State Infrared Detectors to Millimeter Wave Electromagnetic Energy
Abstract
An experimental determination of the millimeter wave (MMW) response of single element InSb and HgCdTe infrared (IR) detectors is made. The detectors were mounted in standard metal dewars and cooled to 77K. Bias and amplification for the detectors were irradiated with amplitude modulated (AM) electromagnetic energy in the Ka nad E microwave bands. MMW transmitter power levels were limited to values of less than 10 mW. Tests were accomplished in the near-field of standard gain pyramidal horns. Response measurements were made on a spectrum analyzer by monitoring the level of the MMW AM rate spectral component. The detector MMW responses were measured for linearity, RF, AM rate, and polarization dependence. The effect of simultaneous IR and MMW sources in the detector field-of-view were also examined. Of the detectors tested, only the HgCdTe detector exhibited a MMW response. The measured HgCdTe MMW response was square law in behavior and displayed dependence on the RF, AM rate, and polarization of the incident MMW. The MMW response was not effected by the presence of IR sources. Theses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1988
- Accession Number
- ADA202667
Entities
People
- Thomas D. Moore
Organizations
- Air Force Institute of Technology