Publikationer pr. år
Publikationer pr. år
Christos Tserkezis, P. A.D. Gonçalves, Christian Wolff, Francesco Todisco, Kurt Busch, N. Asger Mortensen
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
We theoretically analyze the hybrid Mie-exciton optical modes arising from the strong coupling of excitons in organic dyes or transition-metal dichalcogenides with the Mie resonances of high-index dielectric nanoparticles. Detailed analytic calculations show that silicon core-exciton shell nanoparticles are characterized by a richness of optical modes, which can be tuned through nanoparticle dimensions to produce large anticrossings in the visible or near infrared, comparable to those obtained in plexcitonics. The complex magnetic-excitonic nature of these modes is understood through spectral decomposition into Mie-coefficient contributions, complemented by electric and magnetic near-field profiles. In the frequency range of interest, absorptive losses in silicon are sufficiently low to allow observation of several periods of Rabi oscillations in strongly coupled emitter-particle architectures, as confirmed here by discontinuous Galerkin time-domain calculations for the electromagnetic field beat patterns. These results suggest that Mie resonances in high-index dielectrics are promising alternatives for plasmons in strong-coupling applications in nanophotonics, with the coupling of magnetic and electric modes potentially providing additional freedom for external control, whilst offering new possibilities for tailoring artificial optical magnetism.
Originalsprog | Engelsk |
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Artikelnummer | 155439 |
Tidsskrift | Physical Review B |
Vol/bind | 98 |
Udgave nummer | 15 |
Antal sider | 8 |
ISSN | 2469-9950 |
DOI | |
Status | Udgivet - 26. okt. 2018 |
Publikation: Afhandling › Doktorafhandling