期刊
OPTICS LETTERS
卷 34, 期 5, 页码 644-646出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.34.000644
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- Hong Kong central allocation [HKUST3/06C]
Using transformation optics a frequency-selective superabsorber can be constructed that consists of an absorbing core material coated with a shell of isotropic double negative metamaterial. For a fixed volume its absorption cross section can be made arbitrarily large at one frequency. The double-negative shell serves to amplify the evanescent tail of the high-order cylindrical waves, which induces strong scattering and absorption. Our conclusion is supported by both analytical Mie theory and numerical finite-element simulation. Interesting applications of such a device are discussed. (C) 2009 Optical Society of America
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