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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 19 — Oct. 1, 2009
  • pp: 3012–3014

Wavelength-tunable microbolometers with metamaterial absorbers

Thomas Maier and Hubert Brückl  »View Author Affiliations


Optics Letters, Vol. 34, Issue 19, pp. 3012-3014 (2009)
http://dx.doi.org/10.1364/OL.34.003012


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Abstract

Microbolometers are modified by metallic resonant absorber elements, leading to an enhanced responsivity at selectable wavelengths. The dissipative energy absorption of tailored metamaterials allows for engineering the response of conventional bolometer microbridges. The absorption peak position and height are determined by the geometry of the metamaterial. Square-shaped metal/dielectric/metal stacks as absorber elements show spectral resonances at wavelengths between 4.8 and 7.0 μm in accordance with numerical simulations. Total peak absorptions of 0.8 are obtained. The metamaterial modified bolometers are suitable for multispectral thermal imaging systems in the mid-IR and terahertz regime.

© 2009 Optical Society of America

OCIS Codes
(040.2235) Detectors : Far infrared or terahertz
(160.3918) Materials : Metamaterials
(050.6624) Diffraction and gratings : Subwavelength structures
(040.6808) Detectors : Thermal (uncooled) IR detectors, arrays and imaging

ToC Category:
Detectors

History
Original Manuscript: June 30, 2009
Revised Manuscript: August 27, 2009
Manuscript Accepted: September 6, 2009
Published: September 30, 2009

Citation
Thomas Maier and Hubert Brückl, "Wavelength-tunable microbolometers with metamaterial absorbers," Opt. Lett. 34, 3012-3014 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-19-3012

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