Title :
Plasmonic nature of extreme optical chirality of subwavelength hole arrays
Author :
A. V. Kondratov;M. V. Gorkunov;R. V. Gainutdinov;O. Y. Rogov
Author_Institution :
Shubnikov Institute of Crystallography of Russian Academy of Sciences, 119333 Moscow, Russia
Abstract :
We study optical properties of subwavelength arrays of 3D-chiral metal holes exhibiting extreme circular dichroism and optical activity. The nanoscale shape features resolved by atomic force microscopy were processed with the developed AFM-to-FDTD data pipeline for reconstruction, averaging and preparation of the hole shape for FDTD simulations. The simulation results point unambiguously at the chiral localized plasmon resonance as the cause of the extreme optical chirality.
Keywords :
"Optical polarization","Shape","Ultraviolet sources","Biomedical optical imaging","Optical sensors","Plasmons","Optical arrays"
Conference_Titel :
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2015 9th International Congress on
DOI :
10.1109/MetaMaterials.2015.7342530
