Format

Send to

Choose Destination
See comment in PubMed Commons below
Opt Express. 2012 Jan 16;20(2):1308-19. doi: 10.1364/OE.20.001308.

Spiral plasmonic nanoantennas as circular polarization transmission filters.

Author information

1
Department of Physics, Colorado School of Mines, Golden, CO 80401, USA.

Abstract

We present simulation and experimental results for easily fabricated spiral plasmonic antenna analogues providing circular polarization selectivity. One circular polarization state is concentrated and transmitted through a subwavelength aperture, while the opposite circular state is blocked. The spectral bandwidth, efficiency, and extinction ratios are tunable through geometric parameters. Integration of such structures onto a focal plane array in conjunction with linear micropolarizers enables complete Stokes vector imaging, that, until now, has been difficult to achieve. An array of these structures forms a plasmonic metamaterial that exhibits high circular dichroism.

PMID:
22274476
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Loading ...
    Support Center