Plasmons, excitons, and polaritons in aligned carbon nanotubes

Junichiro Kono

doi:10.1117/12.2568230

20 August 2020 Plasmons, excitons, and polaritons in aligned carbon nanotubes

Junichiro Kono

Proceedings Volume 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII; 114620A (2020) https://doi.org/10.1117/12.2568230
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

Single-wall carbon nanotubes (SWCNTs) provide a unique 1D environment in which to examine the physics of interplay between multivalley Dirac band structure and strong Coulomb interactions. Although the 1D nature of individual SWCNTs has stimulated much interest, its macroscopic manifestation has been difficult to observe. We have recently developed a controlled vacuum filtration technique to fabricate wafer-scale films of highly aligned and densely packed SWCNTs. Here, we summarize our accomplishments using these unique samples. We made the first observation of intersubband plasmons – quantum plasmons whose excitation energy is comparable to the quantum confinement energy. We further built an exciton-polariton architecture, which displayed a continuous transition from the ultrastrong-coupling regime to the weak-coupling regime through facile polarization control. The vacuum Rabi splitting exhibited cooperative enhancement when the number of excitons was increased.

Conference Presentation

Citation Download Citation

Junichiro Kono "Plasmons, excitons, and polaritons in aligned carbon nanotubes", Proc. SPIE 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII, 114620A (20 August 2020); https://doi.org/10.1117/12.2568230

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