Localized surface plasmons selectively coupled to resonant light in tubular microcavities

Abstract

Vertical gold-nanogaps are created on microtubular cavities to explore the coupling between resonant light supported by the microcavities and surface plasmons localized at the nanogaps. Selective coupling of optical axial modes and localized surface plasmons critically depends on the exact location of the gold-nanogap on the microcavities which is conveniently achieved by rolling-up specially designed thin dielectric films into three dimensional microtube ring resonators. The coupling phenomenon is explained by a modified quasi-potential model based on perturbation theory. Our work reveals the coupling of surface plasmon resonances localized at the nanoscale to optical resonances confined in microtubular cavities at the microscale, implying a promising strategy for the investigation of light-matter interactions.

arXiv comment16 pages, 4 figures

References in corpus (5)

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• Strongly enhanced light-matter interaction in a hybrid photonic-plasmonic resonator
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Cited by in corpus (3)

• Microcavity-engineered plasmonic resonances for radiation enhancement and strong coupling of a quantum emitter
• Tunable Plasmonic Nanoantennas in Rolled-up Microtubes Coupled to Integrated Quantum Wells
• Cavity QED based on strongly localized modes: exponentially enhancing single-atom cooperativity