High detectivity uncooled thermal detectors with resonant cavity coupled absorption in the long-wave infrared

Anand S. Gawarikar; Ryan P. Shea; Joseph J Talghader

doi:10.1109/TED.2013.2270295

High detectivity uncooled thermal detectors with resonant cavity coupled absorption in the long-wave infrared

Anand S. Gawarikar, Ryan P. Shea, Joseph J Talghader

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

We describe uncooled thermal detectors with a peak detectivity of at least 3 × 10⁹ cm √Hz/W with spectrally selective absorption in the long-wave infrared. The spectral selectivity in absorption is achieved through resonant cavity coupling of a thin metal film with a low-order air-gap optical cavity. The electrical readout uses thermoelectric thin films with a Johnson noise limited performance. The detectors are of multiple sizes but those with 100-μm² area have time constants of 58 ms and thermal conductances of 2.3 × 10^-7 W/K.

Original language	English (US)
Article number	6553377
Pages (from-to)	2586-2591
Number of pages	6
Journal	IEEE Transactions on Electron Devices
Volume	60
Issue number	8
DOIs	https://doi.org/10.1109/TED.2013.2270295
State	Published - 2013

Keywords

Infrared detectors
Optical resonators
Thermoelectric devices

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10.1109/TED.2013.2270295

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title = "High detectivity uncooled thermal detectors with resonant cavity coupled absorption in the long-wave infrared",

abstract = "We describe uncooled thermal detectors with a peak detectivity of at least 3 × 109 cm √Hz/W with spectrally selective absorption in the long-wave infrared. The spectral selectivity in absorption is achieved through resonant cavity coupling of a thin metal film with a low-order air-gap optical cavity. The electrical readout uses thermoelectric thin films with a Johnson noise limited performance. The detectors are of multiple sizes but those with 100-μm2 area have time constants of 58 ms and thermal conductances of 2.3 × 10-7 W/K.",

keywords = "Infrared detectors, Optical resonators, Thermoelectric devices",

author = "Gawarikar, {Anand S.} and Shea, {Ryan P.} and Talghader, {Joseph J}",

year = "2013",

doi = "10.1109/TED.2013.2270295",

language = "English (US)",

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AU - Gawarikar, Anand S.

AU - Shea, Ryan P.

AU - Talghader, Joseph J

PY - 2013

Y1 - 2013

N2 - We describe uncooled thermal detectors with a peak detectivity of at least 3 × 109 cm √Hz/W with spectrally selective absorption in the long-wave infrared. The spectral selectivity in absorption is achieved through resonant cavity coupling of a thin metal film with a low-order air-gap optical cavity. The electrical readout uses thermoelectric thin films with a Johnson noise limited performance. The detectors are of multiple sizes but those with 100-μm2 area have time constants of 58 ms and thermal conductances of 2.3 × 10-7 W/K.

AB - We describe uncooled thermal detectors with a peak detectivity of at least 3 × 109 cm √Hz/W with spectrally selective absorption in the long-wave infrared. The spectral selectivity in absorption is achieved through resonant cavity coupling of a thin metal film with a low-order air-gap optical cavity. The electrical readout uses thermoelectric thin films with a Johnson noise limited performance. The detectors are of multiple sizes but those with 100-μm2 area have time constants of 58 ms and thermal conductances of 2.3 × 10-7 W/K.

KW - Infrared detectors

KW - Optical resonators

KW - Thermoelectric devices

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JO - IEEE Transactions on Electron Devices

JF - IEEE Transactions on Electron Devices

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ER -

High detectivity uncooled thermal detectors with resonant cavity coupled absorption in the long-wave infrared

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