Near-Complete Photon Spin Selectivity in a Metasurface of Anisotropic Plasmonic Antennas
Artikel i vetenskaplig tidskrift, 2015

Simple chiroptically active metamaterials are difficult to realize in practice but could pave the way for a range of important applications, such as sensitive optical biosensors, asymmetric catalysis, and novel polarization manipulation devices. We show that a metasurface based on a random arrangement of anisotropic but aligned gold nanoparticles can exhibit an almost perfect selectivity towards incident photon spin for evanescent excitation with visible to near-infrared light. The experimentally attained reflection contrast between left- and right-handed circularly polarized light peaks at similar to 90%, in excellent agreement with analytical theory. These results are important for the development of future photonic and plasmonic polarization-based technologies.

chirality

nanophotonic wave-guide

oligomers

colloidal lithography

interference

layers

nanostructures

broad-band

fields

metamaterials

Physics

Författare

Robin Ogier

Chalmers, Teknisk fysik, Bionanofotonik

Yurui Fang

Chalmers, Teknisk fysik, Bionanofotonik

Mikael Käll

Chalmers, Teknisk fysik, Bionanofotonik

Mikael Svedendahl

Chalmers, Teknisk fysik, Bionanofotonik

Physical Review X

2160-3308 (ISSN)

Vol. 5 4

Ämneskategorier

Fysik

Nanoteknik

DOI

10.1103/PhysRevX.5.041019

Mer information

Skapat

2017-10-07