Fano resonances in prism-coupled square micropillars
2004; Optica Publishing Group; Volume: 29; Issue: 1 Linguagem: Inglês
10.1364/ol.29.000005
ISSN1539-4794
Autores Tópico(s)Plasmonic and Surface Plasmon Research
ResumoWe report Fano resonances in the frustrated total internal reflection (TIR) spectra of a prism-coupled square micropillar. Our angle-selective frustrated TIR technique reveals characteristically asymmetric resonance line shapes, which evolve spectrally over approximately a 2π phase in the far field within a subdegree range of reflection angles. We theoretically model the asymmetric line shapes by the interference between a high-Q resonance that is evanescently coupled and partially confined by TIR, and a coherent background that is total internally reflected at the prism surface without coupling to the micropillar.
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