Shape-dependent absorption characteristics of three-layered metamaterial absorbers at near-infrared
2011 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 109, no 7, 074510- p.Article in journal (Refereed) Published
We experimentally demonstrate the absorption properties of designed metamaterial absorbers in the near-infrared wavelength regime. For the rectangular-shaped case, we demonstrate its polarization dependent absorbance at various incident angles. For each polarization, the absorbance is insensitive to the incident angle (up to 60 degrees) and a maximum absorbance of 0.95 is obtained. Of particular interest we experimentally observe an absorption peak corresponding to a high-order resonance at 60 degrees with an absorbance of 0.68 excited by the TM polarization. For the square-shaped case, we show its polarization-independent absorption property. A maximum absorbance around 0.65 is achieved at normal incidence and it remains high for incidence angles up to 50 degrees.
Place, publisher, year, edition, pages
2011. Vol. 109, no 7, 074510- p.
IdentifiersURN: urn:nbn:se:kth:diva-33714DOI: 10.1063/1.3573495ISI: 000289949000141ScopusID: 2-s2.0-79955373807OAI: oai:DiVA.org:kth-33714DiVA: diva2:418235
QC 201105202011-05-202011-05-162014-02-03Bibliographically approved