Hybrid dielectric waveguide spectroscopy of individual plasmonic nanoparticles
Artikel i vetenskaplig tidskrift, 2017

© 2017 Author(s). Plasmonics is a mature scientific discipline which is now entering the realm of practical applications. Recently, significant attention has been devoted to on-chip hybrid devices where plasmonic nanoantennas are integrated in standard Si 3 N 4 photonic waveguides. Light in these systems is usually coupled at the waveguide apexes by using multiple objectives and/or tapered optical fibers, rendering the analysis of spectroscopic signals a complicated task. Here, we show how by using a grating coupler and a low NA objective, quantitative spectroscopic information similar to standard dark-field spectroscopy can be obtained at the single-nanoparticle level. This technology may be useful for enabling single-nanoparticle studies in non-linear excitation regimes and/or in complex experimental environments, thus enriching the toolbox of nanophotonic methods.

Författare

Jorge Cuadra

Chalmers, Fysik, Bionanofotonik

Ruggero Verre

Chalmers, Fysik, Bionanofotonik

Martin Wersäll

Chalmers, Fysik, Bionanofotonik

Clemens Krückel

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Victor Torres Company

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Tomasz Antosiewicz

Chalmers, Fysik, Bionanofotonik

Timur Shegai

Chalmers, Fysik, Bionanofotonik

AIP Advances

2158-3226 (ISSN)

Vol. 7 7 Article no: 075207 - 075207

Ämneskategorier

Fysik

Nanoteknik

DOI

10.1063/1.4986423