| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Energy Levels of Coupled Plasmonic Cavities |
| Chuan-Pu Liu1, Xin-Li Zhu1, Jia-Sen Zhang1,2**, Jun Xu1, Yamin Leprince-Wang3, Da-Peng Yu1,2** |
1State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871
2Collaborative Innovation Center of Quantum Matter, Beijing 100871
3Université Paris-Est, Laboratoire ESYCOM, UPEM, Marne-la-Vallée 77454, France
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| Cite this article: |
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Chuan-Pu Liu, Xin-Li Zhu, Jia-Sen Zhang et al 2016 Chin. Phys. Lett. 33 087303 |
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Abstract We demonstrate the hybridization of the plasmonic modes in directly coupled whispering gallery cavities fabricated on silver films and present the mode patterns and energy levels using cathodoluminescence spectroscopy. Although the energy of the most antisymmetrically coupled modes is higher than that of the corresponding symmetrically coupled ones, the contrary cases happen for small quantum number modes. We attribute the phenomenon to the different surface plasmon polariton paths between the symmetrically and antisymmetrically coupled modes. These results provide an understanding of the resonant properties in coupled plasmonic cavities, which have potential applications in nanophotonic devices.
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Received: 06 June 2016
Published: 31 August 2016
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| PACS: |
73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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42.79.-e
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(Optical elements, devices, and systems)
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42.82.-m
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(Integrated optics)
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42.82.Gw
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(Other integrated-optical elements and systems)
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