Negative Optical Torque Generation in Plasmonic and Dielectric Metasurfaces
Abstract
This project will explore and demonstrate the new concept of negative, zero and positive optical torque generation in plasmonic and dielectric metasurface microgears designed from the principle of Pancharatnam-Berry optical elements (PBOEs) and based on spin-to-orbital angular momentum conservation of photons, by the direct observation of the controllable rotation direction and frequency of metasurface microgears in water environment. Anisotropic and inhomogeneous plasmonic or dielectric metasurfaces with various topological charges will be designed based on the principle of PBOEs to generate optical vortex beams and manipulate spin-to-orbit angular momentum conversion.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2016
- Source ID
- N000141612408
Entities
People
- Xiaodong Yang
Organizations
- Office of Naval Research
- United States Navy
- University of Missouri System