Observation of a High-Energy Tamm Plasmon State in the Near-IR Region.
| Autor: | Buchnev O; Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, U.K.; Centre for Photonic Metamaterials, University of Southampton, Southampton SO17 1BJ, U.K., Belosludtsev A; Optical Coating Laboratory, Center for Physical Sciences and Technology, Vilnius LT-02300, Lithuania., Fedotov VA; Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, U.K.; Centre for Photonic Metamaterials, University of Southampton, Southampton SO17 1BJ, U.K. |
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| Jazyk: | angličtina |
| Zdroj: | ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2022 Mar 23; Vol. 14 (11), pp. 13638-13644. Date of Electronic Publication: 2022 Mar 09. |
| DOI: | 10.1021/acsami.2c00486 |
| Abstrakt: | We report on the experimental observation of a Tamm plasmon state in the near-IR region characterized by an anomalously high energy level located in the upper half of the photonic band gap. Such a "blue" Tamm plasmon was demonstrated at the interface between a conventional, completely periodic Bragg reflector and a nanostructured nonresonant thin gold grating. We study the effect of the grating period on the characteristics of the anomalous state and show that the anomaly results from a nontrivial topology of the nanograting's optical near field, which cannot be captured by the effective medium approach and transfer matrix method commonly employed in the analysis of Tamm plasmons. |
| Databáze: | MEDLINE |
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