2023
DOI: 10.1364/opticaopen.22006697.v2
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High-Q Fano Resonances in Diamond Nanopillars

Abstract: We report on the optical behaviour of a nanostructured diamond surface on a glass substrate. The numerical model reveals that a simple geometrical patter sustains Fano-like resonances with Q-factor as high as 3.5·10⁵ that can be excited by plane waves impinging normally on the surface. We show that the geometrical parameters of the nanopillars affect both the resonant frequency and the line shape. The nanostructured surface can be straightforwardly used as a refractive index sensor with high sensitivity and li… Show more

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