Observing and controlling a Tamm plasmon at the interface with a metasurface

Nanophotonics

article

Oleksandr Buchnev¹  Alexandr Belosludtsev²  Victor Reshetnyak³  Dean R. Evans⁴  Vassili A. Fedotov¹ 

[1] Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton;Optical Coating Laboratory, Center for Physical Sciences and Technology;Physics Faculty, Taras Shevchenko National University of Kyiv;Air Force Research Laboratory

关键词: Tamm plasmon;    metasurface;    liquid crystal;    Bragg mirror;   

DOI  :  10.1515/nanoph-2019-0514

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

We demonstrate experimentally that Tamm plasmons in the near infrared can be supported by a dielectric mirror interfaced with a metasurface, a discontinuous thin metal film periodically patterned on the sub-wavelength scale. More crucially, not only do Tamm plasmons survive the nanopatterning of the metal film but they also become sensitive to external perturbations as a result. In particular, by depositing a nematic liquid crystal on the outer side of the metasurface, we were able to red shift the spectral position of Tamm plasmon by 35 nm, while electrical switching of the liquid crystal enabled us to tune the wavelength of this notoriously inert excitation within a 10-nm range.

【 授权许可】

CC BY