Institut für Physik - Humboldt-Universität zu Berlin and Max-Born-Institut
Publications>>Enhanced Faraday rotation by dielectric metasurfaces with Bayesian shape-optimized scatterers
Enhanced Faraday rotation by dielectric metasurfaces with Bayesian shape-optimized scatterers
T: Kiel, P. Varytis, B. Beverungen, P.T. Kristensen, and K. Busch (2021)
Optics Letters 46:1720
Summary (expand/hide)
In this Letter,we demonstrate howto optimize the magneto–optic response of a Huygens metasurface composed of square arrays of all-dielectric nano-disk scatterers.We compare cylindrical and shape-modified disks. Both provide a strongly enhanced Faraday rotation that is accompanied by almost 100% transmittance. The shape modification obtained via a Bayesian optimization algorithm results in a 50% increase in the magneto–optic response compared to the best cylindrical disk, providing 15° of polarization rotation for a 260 nm thick metasurface.
