Type-II superlattice detector for long-wave infrared imaging

P. C. Klipstein, E. Avnon, Y. Benny, A. Fraenkel, A. Glozman, E. Hojman, E. Ilan, E. Kahanov, O. Klin, L. Langof, Y. Livneh, I. Lukomsky, M. Nitzani, L. Shkedy, I. Shtrichman, N. Snapi, R. Talmor, A. Tuito, S. Vaserman, E. Weiss

Research output: Contribution to journalConference articlepeer-review

19 Scopus citations

Abstract

When incorporated into the active layer of a "XBp" detector structure, Type II InAs/GaSb superlattices (T2SLs) offer a high quantum efficiency (QE) and a low diffusion limited dark current, close to MCT Rule 07. Using a simulation tool that was developed to predict the QE as a function of the T2SL period dimensions and active layer stack thickness, we have designed and fabricated a new focal plane array (FPA) T2SL XBp detector. The detector goes by the name of "Pelican-D LW", and has a format of 640 × 512 pixels with a pitch of 15 μm. The FPA has a QE of 50% (one pass), a cut-off of ∼9.5 μm, and operates at 77K with a high operability, background limited performance and good stability. It uses a new digital read-out integrated circuit, and the integrated detector cooler assembly (IDCA) closely follows the configuration of SCD's Pelican-D MWIR detector.

Original languageEnglish
Article number94510K
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume9451
Issue numberJanuary
DOIs
StatePublished - 2015
Externally publishedYes
Event41st Conference on Infrared Technology and Applications - Baltimore, United States
Duration: 20 Apr 201523 Apr 2015

Bibliographical note

Publisher Copyright:
© 2015 SPIE.

Keywords

  • Focal Plane Array
  • Infrared Detector
  • LWIR
  • Type II superlattice
  • XBp
  • pBp

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