High operability 1024 × 1024 long wavelength type-II superlattice focal plane array

Abbas Haddadi*, Shaban Ramezani-Darvish, Guanxi Chen, Anh Minh Hoang, Binh Minh Nguyen, Manijeh Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

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 languageEnglish (US)
Article number6081892
Pages (from-to)221-228
Number of pages8
JournalIEEE Journal of Quantum Electronics
Volume48
Issue number2
DOIs
StatePublished - Feb 1 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

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