A Thin Film Broadband Absorber Based on Multi-sized Nanoantennas

Details A Thin Film Broadband Absorber Based on Multi-sized Nanoantennas A Thin Film Broadband Absorber Based on Multi-sized Nanoantennas

2011-08-02

arxiv.org/abs/1108.0459v1

Physics

Optics

3 pages, 4 figures

Scientific paper

We experimentally demonstrate an infrared broadband absorber for TM polarized light based on an array of nanostrip antennas of several different sizes. The broadband property is due to the collective effect of magnetic responses excited by these nano-antennas at distinct wavelengths. By manipulating the differences of the nanostrip widths, the measured spectra clearly validate our design for the purpose of broadening the absorption band. The present broadband absorber works very well in a wide angular range.

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