Spatially coherent surface resonance states derived from magnetic resonances

Details Spatially coherent surface resonance states derived from magnetic resonances Spatially coherent surface resonance states derived from magnetic resonances

2010-06-22

arxiv.org/abs/1006.4528v1

New Journal of Physics 12 (2010) 093020

Physics

Optics

15 pages,6 figures

Scientific paper

10.1088/1367-2630/12/9/093020

A thin metamaterial slab comprising a dielectric spacer sandwiched between a metallic grating and a ground plane is shown to possess spatially coherent surface resonance states that span a large frequency range and can be tuned by structural and material parameters. They give rise to nearly perfect angle-selective absorption and thus exhibit directional thermal emissivity. Direct numerical simulations show that the metamaterial slab supports spatially coherent thermal emission in a wide frequency range that is robust against structural disorder.

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