Low SWaP MWIR detector based on XBn focal plane array

P. C. Klipstein, Y. Gross, D. Aronov, M. Ben Ezra, E. Berkowicz, Y. Cohen, R. Fraenkel, A. Glozman, S. Grossman, O. Klin, I. Lukomsky, T. Markowitz, L. Shkedy, I. Shtrichman, N. Snapi, A. Tuito, M. Yassen, E. Weiss

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

46 Scopus citations


Over the past few years, a new type of High Operating Temperature (HOT) photon detector has been developed at SCD, which operates in the blue part of the MWIR window of the atmosphere (3.4-4.2 μm). This window is generally more transparent than the red part of the MWIR window (4.4-4.9 μm), especially for mid and long range applications. The detector has an InAsSb active layer, and is based on the new "XBn" device concept. We have analyzed various electrooptical systems at different atmospheric temperatures, based on XBn-InAsSb operating at 150K and epi-InSb at 95K, respectively, and find that the typical recognition ranges of both detector technologies are similar. Therefore, for very many applications there is no disadvantage to using XBn-InAsSb instead of InSb. On the other hand XBn technology confers many advantages, particularly in low Size, Weight and Power (SWaP) and in the high reliability of the cooler and Integrated Detector Cooler Assembly (IDCA). In this work we present a new IDCA, designed for 150K operation. The 15 μm pitch 640×512 digital FPA is housed in a robust, light-weight, miniaturised Dewar, attached to Ricor's K562S Stirling cycle cooler. The complete IDCA has a diameter of 28 mm, length of 80 mm and weight of < 300 gm. The total IDCA power consumption is ∼ 3W at a 60Hz frame rate, including an external miniature proximity card attached to the outside of the Dewar. We describe some of the key performance parameters of the new detector, including its NETD, RNU and operability, pixel cross-talk, and early stage yield results from our production line.

Original languageEnglish
Title of host publicationInfrared Technology and Applications XXXIX
StatePublished - 2013
Externally publishedYes
Event39th Infrared Technology and Applications - Baltimore, MD, United States
Duration: 29 Apr 20133 May 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


Conference39th Infrared Technology and Applications
Country/TerritoryUnited States
CityBaltimore, MD


  • Bariode
  • Focal Plane Array
  • High Operating Temperature
  • InAsSb
  • Infrared Detector
  • Type II superlattice
  • XBn
  • XBp
  • nBn
  • pBp


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