QWIP focal plane arrays on InP substrates for single and dual band thermal imagers

Eker S. U. , Arslan Y., Kaldirim M., BEŞİKCİ C.

INFRARED PHYSICS & TECHNOLOGY, vol.52, no.6, pp.385-390, 2009 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 6
  • Publication Date: 2009
  • Doi Number: 10.1016/j.infrared.2009.05.008
  • Journal Name: INFRARED PHYSICS & TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.385-390
  • Keywords: Quantum well infrared photodetectors, Focal plane arrays, Thermal imaging, WELL INFRARED PHOTODETECTORS, MU-M, PERFORMANCE, WAVELENGTH, GAIN, ABSORPTION

Abstract

Alternative material systems on InP substrate provide certain advantages for mid-wavelength infrared (MWIR), long-wavelength infrared (LWIR) and dual band MWIR/LWIR quantum well infrared photodetector (QWIP) focal plane arrays (FPAs). While InP/InGaAs and InP/InGaAsP LWIR QWIPs provide much higher responsivity, when compared to the AlGaAs/CaAs QWIPs, AllnAs/InGaAs system facilitates completely lattice matched single band MWIR and dual band MWIR/LWIR FPAs.