Instrumentation, Techniques, and Measurement

Modeling of hybridized infrared arrays for characterization of interpixel capacitive coupling

[+] Author Affiliations
Kevan Donlon, Zoran Ninkov, Linpeng Cheng

Rochester Institute of Technology, Chester F. Carlson Center for Imaging Science, Rochester, New York, United States

Stefi Baum

Rochester Institute of Technology, Chester F. Carlson Center for Imaging Science, Rochester, New York, United States

University of Manitoba, Department of Physics and Astronomy, Winnipeg, Manitoba, Canada

Opt. Eng. 56(2), 024103 (Feb 07, 2017). doi:10.1117/1.OE.56.2.024103
History: Received October 30, 2016; Accepted January 19, 2017
Text Size: A A A

Abstract.  Interpixel capacitance (IPC) is a deterministic electronic coupling resulting in a portion of signal incident on one pixel of a hybridized detector array being measured in adjacent pixels. Data collected by light sensitive HgCdTe arrays that exhibit this coupling typically goes uncorrected or is corrected by treating the coupling as a fixed point spread function. Evidence suggests that this coupling is not uniform across signal and background levels. Subarrays of pixels using design parameters based upon HgCdTe indium hybridized arrays akin to those contained in the James Webb Space Telescope’s NIRcam have been modeled from first principles using Lumerical DEVICE Software. This software simultaneously solves Poisson’s equation and the drift diffusion equations yielding charge distributions and electric fields. Modeling of this sort generates the local point spread function across a range of detector parameters. This results in predictive characterization of IPC across scene and device parameters that would permit proper photometric correction and signal restoration to the data. Additionally, the ability to visualize potential distributions and couplings as generated by the models yields insight that can be used to minimize IPC coupling in the design of future detectors.

© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Kevan Donlon ; Zoran Ninkov ; Stefi Baum and Linpeng Cheng
"Modeling of hybridized infrared arrays for characterization of interpixel capacitive coupling", Opt. Eng. 56(2), 024103 (Feb 07, 2017). ; http://dx.doi.org/10.1117/1.OE.56.2.024103


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.