Integrated molecular optomechanics with hybrid dielectric-metallic resonators
arXiv:2105.07887 · doi:10.1021/acsphotonics.1c00808
Abstract
Molecular optomechanics stems from the description of Raman scattering in the presence of an optical resonator using a cavity optomechanics formalism. We extend the molecular optomechanics formalism to the case of hybrid dielectric-plasmonic resonators, with multiple optical resonances and with both free-space and waveguide addressing. We demonstrate how the Raman enhancement is the product of a pump enhancement and a modified LDOS, that simply depend on the complex response functions of the hybrid system. The Fano lineshapes that result from hybridization of a broadband and narrowband modes allows reaching strong Raman enhancement with high-Q resonances, paving the way towards sideband resolved molecular optomechanics. The model allows prediction of the Raman emission ratio into different output ports and enables demonstrating a fully integrated high-Q Raman resonator exploiting multiple cavity modes coupled to the same waveguide.
arXiv comment12 pages, 7 figures
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