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Light absorber with an ultra-broad flat band based on multi-sized slow-wave hyperbolic metamaterial thin-films
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering. KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.
2014 (English)In: Progress In Electromagnetics Research, ISSN 1070-4698, E-ISSN 1559-8985, Vol. 147, 69-79 p.Article in journal (Refereed) Published
Abstract [en]

Here we realize a broadband absorber by using a hyperbolic metamaterial composed of alternating aluminum-alumina thin films based on superposition of multiple slow-wave modes. Our super absorber ensures broadband and polarization-insensitive light absorption over almost the entire solar spectrum, near-infrared and short-wavelength infrared regime (500-2500 nm) with a simulated absorption of over 90%. The designed structure is fabricated and the measured results are given. This absorber yields an average measured absorption of 85% in the spectrum ranging from 500nm to 2300 nm. The proposed absorbers open an avenue towards realizing thermal emission and energy- harvesting materials.

Place, publisher, year, edition, pages
2014. Vol. 147, 69-79 p.
Keyword [en]
Terahertz Regime, Absorption, Design, Slab
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-161026DOI: 10.2528/PIER14040306ISI: 000350673700005ScopusID: 2-s2.0-84903515906OAI: diva2:794875
Swedish Research Council, 621-2011-4620

QC 20150313

Available from: 2015-03-13 Created: 2015-03-06 Last updated: 2015-04-07Bibliographically approved

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He, Sailing
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Electromagnetic EngineeringZhejiang-KTH Joint Research Center of Photonics, JORCEP
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Electrical Engineering, Electronic Engineering, Information Engineering

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