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Gallium arsenide quantum well-based far infrared array radiometric imager
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Forrest, Kathrine A. Jhabvala, Murzy D. |
| Copyright Year | 1991 |
| Description | We have built an array-based camera (FIRARI) for thermal imaging (lambda = 8 to 12 microns). FIRARI uses a square format 128 by 128 element array of aluminum gallium arsenide quantum well detectors that are indium bump bonded to a high capacity silicon multiplexer. The quantum well detectors offer good responsivity along with high response and noise uniformity, resulting in excellent thermal images without compensation for variation in pixel response. A noise equivalent temperature difference of 0.02 K at a scene temperature of 290 K was achieved with the array operating at 60 K. FIRARI demonstrated that AlGaAS quantum well detector technology can provide large format arrays with performance superior to mercury cadmium telluride at far less cost. |
| File Size | 399586 |
| Page Count | 5 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920013209 |
| Archival Resource Key | ark:/13960/t54f6pv8h |
| Language | English |
| Publisher Date | 1991-12-01 |
| Access Restriction | Open |
| Subject Keyword | Radiometers Multiplexing Costs Gallium Arsenides Quantum Wells Temperature Gradients Indium Pixels Thermal Mapping Mercury Cadmium Tellurides Far Infrared Radiation Aluminum Gallium Arsenides Cameras Silicon Noise Temperature Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
