Tunneling-induced broadband and tunable optical emission from plasmonic nanorod metamaterials

Nanophotonics

article

Alexey V. Krasavin¹  Pan Wang¹  Mazhar E. Nasir¹  Yunlu Jiang¹  Anatoly V. Zayats¹ 

[1] Department of Physics and London Centre for Nanotechnology, King’s College London;State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University

关键词: plasmonics;    metamaterials;    electron tunneling;    nanoscale light sources;   

DOI  :  10.1515/nanoph-2019-0411

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

We demonstrate a metamaterial platform for electrically driven broadband light emission induced by electron tunneling. Both the Fabry-Perot and waveguided modes of the metamaterial slab as well the plasmonic mode of the tunneling gap are identified as contributing to shaping the emission spectrum. This opens up an opportunity to design the spectrum and polarization of the emitted light by tuning the metamaterial modes via the geometric parameters of the nanostructure throughout the visible and near-infrared spectral ranges. The efficient coupling of the tunneling-induced emission to the waveguided modes is beneficial for the development of integrated incoherent light sources, while the outcoupled emission provides a source of free-space radiation. The demonstrated incoherent nanoscale light sources may find applications in the development of integrated opto-electronic circuits, optical sensing platforms, imaging, and metrology.

【 授权许可】

CC BY