8 March 2014 High-efficient and broadband nanoabsorbers and nanoreflectors based on metallic dielectric periodical structures
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Abstract
Broadband nanostructured metallic-dielectric absorbers and reflectors are of great interest in integrated optics and they have a great potential for applications like polarizers or reflectors for nanoantennas applications operating in optical frequencies, covering the interval of the O-E-S-C-L-U bands. In this work, novel geometric and optical configurations are numerically analyzed. The absorber or reflected central frequencies of the analyzed devices can be easily tuned over the entire communications wavelength band by varying their geometrics and optical parameters Peaks of absorption larger than 80% were obtained in optical wavelengths by using metals like silver and gold in combination with silica substrates.
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Joaquim Junior Isidio Lima, Juarez Caetano da Silva, Vitaly Felix Rodriguez-Esquerre, Cosme Eustaquio Rubio Mercedes, "High-efficient and broadband nanoabsorbers and nanoreflectors based on metallic dielectric periodical structures", Proc. SPIE 8988, Integrated Optics: Devices, Materials, and Technologies XVIII, 89881U (8 March 2014); doi: 10.1117/12.2040484; https://doi.org/10.1117/12.2040484
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