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Wavelength and Thermal Distribution Selectable Microbolometers Based on Metamaterial Absorbers
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2015 (English)In: IEEE Photonics Journal, ISSN 1943-0655, Vol. 7, no 3, 6800908Article in journal (Refereed) Published
Abstract [en]

An uncooled microbolometer based on metamaterial absorbers is investigated. The absorption peak reaches 90%, and the peak wavelength can be tailored from 2.4 to 10.2 mu m with corresponding bandwidth varying from 0.5 to 1.5 mu m by tuning the geometric parameters of the absorbers, covering two atmosphere windows (3-5 mu m and 8-14 mu m). The thermal distribution in the microbolometer can be adjusted to realize a strong thermal response. In the given situation with a pixel size of 25.07 mu m, the temperature response of the detector reaches 1.3 K. The microbolometer can be potentially used in thermal imaging at selected wavelengths in the mid-infrared and far-infrared regimes.

Place, publisher, year, edition, pages
2015. Vol. 7, no 3, 6800908
Keyword [en]
Detectors, microbolometers, metamaterial absorbers, absorption, photothermal effect
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-169128DOI: 10.1109/JPHOT.2015.2406763ISI: 000354188100026Scopus ID: 2-s2.0-84928823046OAI: oai:DiVA.org:kth-169128DiVA: diva2:820391
Funder
Swedish Research Council
Note

QC 20150612

Available from: 2015-06-12 Created: 2015-06-11 Last updated: 2015-06-12Bibliographically approved

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