Abstract
Electrical and radiometric characterization results of a high-operability1024 × 1024 long wavelength infrared type-II superlattice focal plane array are described. It demonstrates excellent quantum efficiency operability of 95.8% and 97.4% at operating temperatures of 81 K and 68 K, respectively. The external quantum efficiency is 81% without any antireflective coating. The dynamic range is 37 dB at 81 K and increases to 39 dB at 68 K operating temperature. The focal plane array has noise equivalent temperature difference as low as 27 mK and 19 mK at operating temperatures of 81 K and 68 K, respectively, using f/2 optics and an integration time of 0.13 ms.
Original language | English (US) |
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Article number | 6081892 |
Pages (from-to) | 221-228 |
Number of pages | 8 |
Journal | IEEE Journal of Quantum Electronics |
Volume | 48 |
Issue number | 2 |
DOIs | |
State | Published - 2012 |
Keywords
- Infrared imaging
- large format focal plane array
- long wavelength infrared photodetector
- type-II superlattice
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering