Chiroptical hot spots in twisted nanowire plasmonic oscillators
Abstract
We image the chiroptical response of crossed nanowire junctions as a function of the vertical offset between the nanowires and the incident wavelength. These samples show chiroptical “hot spots” with strongly localized circular differential scattering at the nanowire crossing points. These chiroptical hot spots are not apparent in the spatially averaged spectra. The sign and magnitude of the chiroptical enhancement show a complex dependence on sample geometry, which we reproduce with a fully retarded analytical scattering model. These results suggest strategies for engineering devices with enhanced chiral light-matter interactions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 28, 2013
- Source ID
- 10.1063/1.4789529
Entities
People
- Adam Cohen
- Li Sun
- Yiqiao Tang
Organizations
- Defense Advanced Research Projects Agency
- Harvard University
- National Science Foundation
- Office of Naval Research