Details

Autor(en) / Beteiligte

• Rybin, M V
• Khanikaev, A B
• Inoue, M
• Samusev, K B
• Steel, M J
• Yushin, G
• Limonov, M F

Titel

Fano resonance between Mie and Bragg scattering in photonic crystals

Ist Teil von

• Physical review letters, 2009-07, Vol.103 (2), p.023901-023901, Article 023901

Ort / Verlag

United States

Erscheinungsjahr

2009

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• 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-SiO2 opal spheres. The theoretical "quasi-3D" model produces results in excellent agreement with the experimental data.