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Appl. Sci. 2018, 8(3), 390; https://doi.org/10.3390/app8030390

Bloch Surface Waves Using Graphene Layers: An Approach toward In-Plane Photodetectors

1
Optics & Photonics Technology Laboratory (OPT), École Polytechnique Fédérale de Lausanne (EPFL), Rue de la Maladière 71b, 2002 Neuchâtel, Switzerland
2
Institut de Ciències Fotòniques (ICFO), The Barcelona Institute of Science and Technology, 08860 Castelldefels, Spain
3
Institució Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Received: 9 February 2018 / Revised: 2 March 2018 / Accepted: 5 March 2018 / Published: 7 March 2018
(This article belongs to the Special Issue Surface Waves on Planar Photonic Crystals)
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Abstract

A dielectric multilayer platform was investigated as a foundation for two-dimensional optics. In this paper, we present, to the best of our knowledge, the first experimental demonstration of absorption of Bloch surface waves in the presence of graphene layers. Graphene is initially grown on a Cu foil via Chemical Vapor Deposition and transferred layer by layer by a wet-transfer method using poly(methyl methacrylate), (PMMA). We exploit total internal reflection configuration and multi-heterodyne scanning near-field optical microscopy as a far-field coupling method and near-field characterization tool, respectively. The absorption is quantified in terms of propagation lengths of Bloch surface waves. A significant drop in the propagation length of the BSWs is observed in the presence of graphene layers. The propagation length of BSWs in bare multilayer is reduced to 17 times shorter in presence of graphene monolayer, and 23 times shorter for graphene bilayer. View Full-Text
Keywords: multilayer platform; graphene; optics at the surface; Bloch surface waves; scanning near-field optical microscopy; surface waves; two-dimensional optics; optical characterization multilayer platform; graphene; optics at the surface; Bloch surface waves; scanning near-field optical microscopy; surface waves; two-dimensional optics; optical characterization
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Dubey, R.; Marchena, M.; Vosoughi Lahijani, B.; Kim, M.-S.; Pruneri, V.; Herzig, H.P. Bloch Surface Waves Using Graphene Layers: An Approach toward In-Plane Photodetectors. Appl. Sci. 2018, 8, 390.

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