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Fano Resonance between Mie and Bragg Scattering in Photonic Crystals
被引:182
|作者:
Rybin, M. V.
[1
]
Khanikaev, A. B.
[2
,3
,4
]
Inoue, M.
[2
]
Samusev, K. B.
[1
]
Steel, M. J.
[3
,4
]
Yushin, G.
[5
]
Limonov, M. F.
[1
,2
]
机构:
[1] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[2] Toyohashi Univ Technol, Aichi 4418580, Japan
[3] Macquarie Univ, MQ Photon Res Ctr, CUDOS, N Ryde, NSW 2109, Australia
[4] Macquarie Univ, Dept Phys, N Ryde, NSW 2109, Australia
[5] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
基金:
日本学术振兴会;
澳大利亚研究理事会;
关键词:
OPTICAL-PROPERTIES;
D O I:
10.1103/PhysRevLett.103.023901
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
We report the observation of a Fano resonance between continuum Mie scattering and a narrow Bragg band in synthetic opal photonic crystals. The resonance leads to a transmission spectrum exhibiting a Bragg dip with an asymmetric profile, which can be tunably reversed to a Bragg rise. The Fano asymmetry parameter is linked with the dielectric contrast between the permittivity of the filler and the specific value determined by the opal matrix. The existence of the Fano resonance is directly related to disorder due to nonuniformity of a-SiO(2) opal spheres. The theoretical "quasi-3D" model produces results in excellent agreement with the experimental data.
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