Electric current induced unidirectional propagation of surface plasmon-polaritons

Autor:	Bliokh, K. Y., Rodríguez-Fortuño, F. J., Bekshaev, A. Y., Kivshar, Y. S., Nori, F.
Rok vydání:	2017
Předmět:	Physics - Optics
Zdroj:	Opt. Lett. 43, 963 (2018)
Druh dokumentu:	Working Paper
DOI:	10.1364/OL.43.000963
Popis:	Nonreciprocity and one-way propagation of optical signals is crucial for modern nanophotonic technology, and is typically achieved using magneto-optical effects requiring large magnetic biases. Here we suggest a fundamentally novel approach to achieve unidirectional propagation of surface plasmon-polaritons (SPPs) at metal-dielectric interfaces. We employ a direct electric current in metals, which produces a Doppler frequency shift of SPPs due to the uniform drift of electrons. This tilts the SPP dispersion, enabling one-way propagation, as well as zero and negative group velocities. The results are demonstrated for planar interfaces and cylindrical nanowire waveguides. Comment: 4 pages, 4 figures, to appear in Opt. Lett
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1712.00291 Zobrazit plný text záznamu View this record from Arxiv