Spatial Noise and Correctability of Type-II InAs/GaSb Focal Plane Arrays

Pierre Yves Delaunay, Manijeh Razeghi

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


A long wavelength infrared focal plane array based on Type-II InAs/GaSb superlattices was fabricated and characterized at 80 K. The noise equivalent temperature difference of the array was measured as low as 23 mK (f# = 2), for an integration time of 0.129 ms. The spatial noise of the array was dominated by the nonuniformity of the illumination through the circular aperture. A standard two-point nonuniformity correction improved the inhomogeneity equivalent temperature difference to 16 mK. The correctability just after calibration was 0.6. The long-term stability time was superior to 25 hours.

Original languageEnglish (US)
Pages (from-to)584-588
Number of pages5
JournalIEEE Journal of Quantum Electronics
Issue number4
StatePublished - Apr 2010


  • Focal plane array
  • infrared
  • photodetectors
  • spatial noise
  • type II superlattice

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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