Quasi-isotropic Surface Plasmon Polariton Generation through Near-Field Coupling to a Penrose Pattern of Silver Nanoparticles
Journal article, 2014

Quasicrystals are structures that possess long-range order without being periodic. We investigate the unique characteristics of a photonic quasicrystal that consists of plasmonic Ag nanodisks arranged in a Penrose pattern. The quasicrystal scatters light in a complex but spectacular diffraction pattern that can be directly imaged in the back focal plane of an optical microscope, allowing us to assess the excitation efficiency of the various diffraction modes. Furthermore, surface plasmon polaritons can be launched almost isotropically through near-field grating coupling when the quasicrystal is positioned close to a homogeneous silver surface. We characterize the dispersion relation of the different excited plasmon modes by reflection measurements and simulations. It is demonstrated that the quasicrystal in-coupling efficiency is strongly enhanced compared to a nanopartide array with the same particle density but only short-range lateral order. We envision that the system can be useful for a number of advanced light harvesting and optoelectronic applications.

solar-cells

emission

crystals

resonances

order

light-scattering

antenna

lithography

enhancement

aperiodic arrays

Author

Ruggero Verre

Chalmers, Applied Physics, Bionanophotonics

Tomasz Antosiewicz

Chalmers, Applied Physics, Bionanophotonics

Mikael Svedendahl

Chalmers, Applied Physics, Bionanophotonics

Kristof Lodewijks

Chalmers, Applied Physics, Bionanophotonics

Timur Shegai

Chalmers, Applied Physics, Bionanophotonics

Mikael Käll

Chalmers, Applied Physics, Bionanophotonics

ACS Nano

1936-0851 (ISSN) 1936-086X (eISSN)

Vol. 8 9 9286-9294

Subject Categories

Nano Technology

DOI

10.1021/nn503195n

More information

Created

10/7/2017