Share Email Print
cover

Proceedings Paper • new

Optical critical coupling in nanogap antennas
Author(s): Ludivine Emeric; Claire Deeb; Fabrice Pardo; Jean-Luc Pelouard

Paper Abstract

Nanogap optical antennas enable enhancement of light-matter interactions owing to their great field enhancement. Interesting properties have been studied over recent years, such as high-order harmonics generation, electrically driven absorption, optical rectification and nonlinear tunnelling effect. However, as the gap size is shrunk down to the nanometer scale, losses dramatically increase and coupling efficiency of antenna with free-space decreases. This work reports conditions of perfect coupling, also called critical coupling, between a periodic array of nanogap metal-insulator-metal (MIM) antennas and free-space. We demonstrate that critical coupling is still achievable, even for the thinnest gaps.

Paper Details

Date Published: 9 September 2019
PDF
Proc. SPIE 11082, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII, 110821G (9 September 2019); doi: 10.1117/12.2529531
Show Author Affiliations
Ludivine Emeric, Ctr. for Nanoscience and Nanotechnology C2N, CNRS (France)
Univ. Paris-Sud, Univ. Paris-Saclay (France)
ONERA The French Aerospace Lab., Chemin de la Hunière (Georgia)
Claire Deeb, Ctr. for Nanoscience and Nanotechnology C2N, CNRS (France)
Univ. Paris-Sud, Univ. Paris-Saclay (France)
Fabrice Pardo, Ctr. for Nanoscience and Nanotechnology C2N, CNRS (France)
Univ. Paris-Sud, Univ. Paris-Saclay (France)
Jean-Luc Pelouard, Ctr. for Nanoscience and Nanotechnology C2N, CNRS (France)
Univ. Paris-Sud, Univ. Paris-Saclay (France)


Published in SPIE Proceedings Vol. 11082:
Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII
Din Ping Tsai; Takuo Tanaka, Editor(s)

© SPIE. Terms of Use
Back to Top