Hybrid dielectric waveguide spectroscopy of individual plasmonic nanoparticles
Journal article, 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.

Author

Jorge Cuadra

Chalmers, Physics, Bionanophotonics

Ruggero Verre

Chalmers, Physics, Bionanophotonics

Martin Wersäll

Chalmers, Physics, Bionanophotonics

Clemens Krückel

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Victor Torres Company

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Tomasz Antosiewicz

Chalmers, Physics, Bionanophotonics

Timur Shegai

Chalmers, Physics, Bionanophotonics

AIP Advances

2158-3226 (ISSN)

Vol. 7 7 Article no: 075207 - 075207

Subject Categories

Physical Sciences

Nano Technology

DOI

10.1063/1.4986423

More information

Created

10/7/2017