Abstract

Multiband infrared focal plane arrays (FPAs) with small pixel pitch have increased device processing complexity since they often need more than two terminals per pixel for readouts. Simpler FPAs are enabled by our newly demonstrated optically-addressed two-terminal multiband photodetector architecture. For long-wavelength infrared (LWIR) and midwavelength infrared (MWIR) imaging applications, the use of quantum well infrared photodetectors (QWIP) has been investigated. The results show that the utilization of unipolar QWIPs with bipolar near infrared (NIR) devices is feasible with this new optical-addressing scheme. Potential device performance is analyzed with an equivalent AC circuit model. Proposed design maximizes fill factor and enables small pixel-pitch FPA with single indium-bump per pixel for NIR/MWIR/LWIR multiband detection capability.

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

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8268
ISSN (Print)0277-786X

Other

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

Keywords

  • FPA
  • Multicolor photodetector
  • multiband photodetector
  • multispectral imaging

ASJC Scopus subject areas

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

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  • Cite this

    Cellek, O. O., & Zhang, Y-H. (2012). Optically addressed multiband photodetector for infrared imaging applications. In Quantum Sensing and Nanophotonic Devices IX [82682N] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8268). https://doi.org/10.1117/12.909063