Quasi-total funneling of light in high aspect ratio gold grooves

P. Bouchon; F. Pardo; P. Ghenuche; L. Ferlazzo; R. Haïdar; J.-L. Pelouard

doi:10.1117/12.922418

30 April 2012 Quasi-total funneling of light in high aspect ratio gold grooves

P. Bouchon, F. Pardo, P. Ghenuche, L. Ferlazzo, R. Haïdar, J.-L. Pelouard

Proceedings Volume 8424, Nanophotonics IV; 84240T (2012) https://doi.org/10.1117/12.922418
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

Here, we demonstrate the total extinction of the reflectivity for a transverse magnetic polarized wave on a gold surface etched on a tiny portion of its area by both narrow and deep grooves. At the resonance, the incident energy is funneled towards the grooves aperture and is then dissipated on the grooves sidewalls. Thanks to the decomposition of the electromagnetic field into its propagative and evanescent parts, we unambiguously show that the funneling is not due to plasmonic waves flowing toward the grooves, but rather to the magnetoelectric interference of the incident wave with the evanescent field. This evanescent field is mainly due to the resonant wave escaping from the groove. These high aspect ratio metallic grooves were fabricated using a mold cast technique based on an electrolytic growth of gold. They exhibit a nearly total absorption due to a Fabry-Perot like resonance inside the grooves. We also evidence the incidence-invariance of their spectral response, which undoubtedly shows the localized nature of the resonances. These experimental results confirm the prediction of total funneling of light in very narrow grooves.

Citation Download Citation

P. Bouchon, F. Pardo, P. Ghenuche, L. Ferlazzo, R. Haïdar, and J.-L. Pelouard "Quasi-total funneling of light in high aspect ratio gold grooves", Proc. SPIE 8424, Nanophotonics IV, 84240T (30 April 2012); https://doi.org/10.1117/12.922418

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Gold

Reflectivity

Absorption

Gallium arsenide

Plasmonics

Selenium

Fabrication

Show All Keywords

Keywords/Phrases

Search In:

Publication Years