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Broadband efficient light absorbing in the visible regime by a metananoring array
Author(s) -
Cao Shuiyan,
Yu Weixing,
Zhang Lingtong,
Wang Cheng,
Zhang Xuming,
Fu Yongqi
Publication year - 2014
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.201300198
Subject(s) - nanoring , metamaterial , optics , broadband , materials science , optoelectronics , visible spectrum , ray , molar absorptivity , polarization (electrochemistry) , surface plasmon resonance , plasmon , resonance (particle physics) , physics , nanotechnology , nanoparticle , chemistry , particle physics
The broadband efficient light‐absorbing property of a metamaterial‐based subwavelength nanoring array in visible regime is reported. The nanoring array can absorb light efficiently with an average absorptivity of 0.97 over the whole visible waveband. In addition, it is found that this kind of super light‐absorbing capability is independent of the incoming light polarization state and can maintain an average of 0.9 for an incident angle as large as ±60° under TM illumination. The perfect absorbing property of the metamaterial‐based nanoring array is attributed to the synergetic effect of the Fabry–Perot resonance and the localized surface plasmon resonance enhancement.