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High Absorption per Unit Mass Subwavelength Structure as Uncooled Infrared Detector

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A subwavelength perforated structure designed for a maximum absorption-To-mass ratio has been utilized to construct an uncooled infrared (λ ∼ 8-12μ μ m) thermal detector operating in air with a noise equivalent temperature difference (NETD) of 23 mK and detectivity of 1.1× 109mHz/W while time constant is 1.5 ms. With a fill factor of ∼ 27\%, the detector shows an average absorption per unit mass of ∼ 6.8× 1012 kg-1over the long-wave infrared regime. Mach-Zehnder interferometry has been used for optical readout of the detector.

Original languageEnglish (US)
Title of host publicationInternational Conference on Optical MEMS and Nanophotonics and SBFoton International Optics and Photonics Conference
Subtitle of host publicationLighting Up a Smart Digital Future, OMN/SBFoton IOPC 2023
PublisherIEEE Computer Society
ISBN (Electronic)9798350304022
DOIs
StatePublished - 2023
Event2023 International Conference on Optical MEMS and Nanophotonics and SBFoton International Optics and Photonics Conference, OMN/SBFoton IOPC 2023 - Campinas, Sao Paulo, Brazil
Duration: Jul 31 2023Aug 3 2023

Publication series

NameInternational Conference on Optical MEMS and Nanophotonics
Volume2023-July
ISSN (Print)2160-5033
ISSN (Electronic)2160-5041

Conference

Conference2023 International Conference on Optical MEMS and Nanophotonics and SBFoton International Optics and Photonics Conference, OMN/SBFoton IOPC 2023
Country/TerritoryBrazil
CityCampinas, Sao Paulo
Period7/31/238/3/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

  • Mach-Zehnder interferometer
  • NETD
  • Uncooled thermal detector
  • absorption per unit mass
  • detectivity

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