Tunable wide-angle plasmonic perfect absorber at visible frequencies

Autor:	Linran Fan, Xing Zhu, Zheyu Fang, Peter Nordlander, Yu Rong Zhen
Rok vydání:	2012
Předmět:	Photon Materials science business.industry Condensed Matter Physics Electronic Optical and Magnetic Materials Absorbance Formalism (philosophy of mathematics) Optics Thermal Quasiparticle Polariton business Plasmon Excitation
Zdroj:	Physical Review B. 85
ISSN:	1550-235X 1098-0121
Popis:	We report a perfect absorber metallic hole array with wide-angle near unity absorbance in the visible regime. The periodicity of the structure enables excitation of surface-plasmon polaritons and results in a splitting of the absorbing peaks. An analytical formalism based on perturbation theory provides results in good agreement with experimental data and shows how the absorption peak can be tuned with hole geometry, periodicity, and material parameters. Being extendable to more complex hybrid structures, our result is important for the development of photon harvesting devices and thermal emitters.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a577284491d096a005b906f892254942 https://doi.org/10.1103/physrevb.85.245401 Zobrazit plný text záznamu