World's first demonstration of type-II superlattice dual band 640x512 LWIR focal plane array

Edward Kwei Wei Huang, Manijeh Razeghi*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations

Abstract

High resolution multi-band infrared detection of terrestrial objects is useful in applications such as long range and high altitude surveillance. In this paper, we present a 640 by 512 type-II superlattice focal plane array (FPA) in the long-wave infrared (LWIR) suitable for such purposes, featuring 100% cutoff wavelengths at 9.5μm (blue channel) and 13μm (red). The dual band camera is single-bump hybridized to an Indigo 30μm pitch ISC0905 read-out integrated circuit. Test pixels revealed background limited behavior with specific detectivities as high as ∼5x10 11 Jones at 7.9μm (blue) and ∼1x10 11 Jones at 10.2μm (red) at 77K.

Original languageEnglish (US)
Title of host publicationQuantum Sensing and Nanophotonic Devices IX
Volume8268
DOIs
StatePublished - Feb 20 2012
EventQuantum Sensing and Nanophotonic Devices IX - San Francisco, CA, United States
Duration: Jan 22 2012Jan 26 2012

Other

OtherQuantum Sensing and Nanophotonic Devices IX
CountryUnited States
CitySan Francisco, CA
Period1/22/121/26/12

Keywords

  • Dual band
  • Focal plane arrays
  • InAs/GaSb/AlSb
  • Infrared imaging
  • Large format
  • LWIR
  • Photodetectors
  • Third generation
  • Two color
  • Type-II superlattice
  • VLWIR

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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