Nonlinear compensation for responsivity nonuniformities in cadmium mercury telluride focal plane detector arrays; For use in the 8 to 12. mu. spectral region
- Dept. of Defense, Defense, Defense Science and Technology Organization, Surveillance Research Lab. Salisbury (AU)
The performance of focal plane arrays of cadmium mercury telluride (HgCdTe) photodetectors when used in the 8 to 12 {mu} spectral range is limited by the nonuniformity of the responses of the detector elements in the array. If arrays of large numbers of detectors are to be used as sensors to achieve small noise equivalent temperature differentials (NETDs), these nonuniformfities will have to be reduced during the fabrication of the arrays or compensated for in operation by correcting output obtained from each individual detector. This paper analyzes some of the requirements for compensation techniques and discusses their application to infrared focal plane detector arrays. A method of compensation is proposed that provides significantly better correction than linear two-point correction schemes. The performance of the method is analyzed, and its application is demonstrated.
- OSTI ID:
- 7229357
- Journal Information:
- Optical Engineering; (USA), Vol. 28:8; ISSN 0091-3286
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Related Subjects
47 OTHER INSTRUMENTATION
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
CADMIUM TELLURIDE SOLAR CELLS
PERFORMANCE
PHOTODETECTORS
FABRICATION
INFRARED RADIATION
MATERIALS TESTING
MERCURY TELLURIDES
NOISE
NONLINEAR PROBLEMS
OPTICAL SCANNERS
REMOTE SENSING
CHALCOGENIDES
DIRECT ENERGY CONVERTERS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
MERCURY COMPOUNDS
OPTICAL EQUIPMENT
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
RADIATIONS
SOLAR CELLS
SOLAR EQUIPMENT
TELLURIDES
TELLURIUM COMPOUNDS
TESTING
140501* - Solar Energy Conversion- Photovoltaic Conversion
440600 - Optical Instrumentation- (1990-)
990200 - Mathematics & Computers