Highly selective two-color mid-wave and long-wave infrared detector hybrid based on Type-II superlattices

Edward Kwei Wei Huang, Minh Anh Hoang, Guanxi Chen, Shaban Ramezani-Darvish, Abbas Haddadi, Manijeh Razeghi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

We report a two-color mid-wave infrared (MWIR) and long-wave infrared (LWIR) co-located detector with 3 μm active region thickness per channel that is highly selective and can perform under high operating temperatures for the MWIR band. Under back-side illumination, a temperature evolution study of the MWIR detector's electro-optical performance found the 300 K background-limit with 2π field-of-view to be achieved below operating temperatures of 160 K, at which the temperature's 50% cutoff wavelength was 5.2 μm. The measured current reached the system limit of 0.1 pA at 110 K for 30 μm pixel-sized diodes. At 77 K, where the LWIR channel operated with a 50% cutoff wavelength at 11.2 μm, an LWIR selectivity of ∼17% was achieved in the MWIR wave band between 3 and 4.7 μm, making the detector highly selective.

Original languageEnglish (US)
Pages (from-to)4744-4746
Number of pages3
JournalOptics Letters
Volume37
Issue number22
DOIs
StatePublished - Nov 15 2012

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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