Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Opt Express. 2012 Mar 26;20(7):7206-11. doi: 10.1364/OE.20.007206.

Transparency window for the absorptive dipole resonance in a symmetry-reduced grating structure.

Author information

  • 1Physics Department, Southeast University, Nanjing 211189, China. zgdong@seu.edu.cn

Abstract

We demonstrate that a transparency window can be obtained within the absorptive dipole resonant regime, by slightly reducing the symmetric arrangement of a dipole-like bar grating covered by a waveguiding layer. The physical understanding is that, under the condition of reducing the grating symmetry, the lossy dipole plasmon resonance can be completely transferred into the waveguide mode in a way of destructive interference. In accompany with the tunable transparency window modulated by the symmetry-reduced displacement, an ultra high group index (slowing down the light) as well as a vortex distribution of the electromagnetic field is found.

PMID:
22453402
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Loading ...
    Write to the Help Desk