Nanoantennas for enhancing and confining the magnetic optical field

Thierry Grosjean; Mathieu Mivelle; Fadi I. Baida; Geoffrey W. Burr; Ulrich C. Fischer

doi:10.1117/12.886983

17 May 2011 Nanoantennas for enhancing and confining the magnetic optical field

Thierry Grosjean, Mathieu Mivelle, Fadi I. Baida, Geoffrey W. Burr, Ulrich C. Fischer

Proceedings Volume 8070, Metamaterials VI; 807005 (2011) https://doi.org/10.1117/12.886983
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic

Abstract

We propose different optical antenna structures for enhancing and confining the magnetic optical field. A common feature of these structures are concave corners in thin metal films as locations of the enhanced magnetic field. This proposal is inspired by Babinet's principle as the concave edges are the complementary structures to convex metal corners, which are known to be locations of a strongly enhanced electric field. Bowtie antennas and the bowtie apertures of appropriate size were shown to exhibit resonances in the infrared frequency range with an especially strong enhancement of the electrical field in the gap between 2 convex metal corners. We show by numerical calculations, that the complementary structures, the complementary bowtie aperture - the diabolo antenna - and the complementary bow tie antenna - two closely spaced triangular apertures in a metal film with a narrow gap between two opposing concave corners - exhibit resonances with a strongly enhanced magnetic field at the narrow metal constriction between the concave corners. We suggest sub-wavelength circuits of concave and convex corners as building blocks of planar metamaterials.

Citation Download Citation

Thierry Grosjean, Mathieu Mivelle, Fadi I. Baida, Geoffrey W. Burr, and Ulrich C. Fischer "Nanoantennas for enhancing and confining the magnetic optical field", Proc. SPIE 8070, Metamaterials VI, 807005 (17 May 2011); https://doi.org/10.1117/12.886983

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