Nonuniformity analyses of IRFPA with DI readout circuit

Wei Wang, Yang Yu Fan, Qiang Guo, Jun Ming Liu

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

2 Scopus citations

Abstract

Nonuniformity impacting factors on an IRFPA with direct injection (DI) readout circuit and InSb PV detector are analyzed in this paper. The nonuniformity of threshold voltage results in deviation of detector bias and current. Then the detector nonuniformity and injection efficiency nonuniformity occur. Another expression for injection efficiency is deduced and its relation with detector bias is obtained. Relation between FPA nonuniformity and detector I-V characteristics is analyzed. The bias range from -0.2V to -0.1V is an ideal operating region for detector array. Small deviation of detector current, insensitive to nonuniformity of threshold voltage, uniform response of detector array, high detector impedance and high injection efficiency are all satisfied in this region. The best gate voltage range of injection MOSFET is from 3.6V to 3.7V. FPA has minimum nonuniformity in this region, which is corresponding to detector bias from -0.2V to -0.1V. Results shown in this paper optimize the performance of FPA.

Original languageEnglish
Title of host publicationInternational Symposium on Photoelectronic Detection and Imaging 2009 - Advances in Infrared Imaging and Applications
DOIs
StatePublished - 2009
EventInternational Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications - Beijing, China
Duration: 17 Jun 200919 Jun 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7383
ISSN (Print)0277-786X

Conference

ConferenceInternational Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications
Country/TerritoryChina
CityBeijing
Period17/06/0919/06/09

Keywords

  • Direct injection
  • FPA
  • Nonuniformity
  • Readout circuit

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