Optically reconfigurable metadevices based on phase-change materials

Chalcogenide phase-change media provide a uniquely flexible platform for both nanostructured and optically-rewritable all-dielectric metamaterials. Non-volatile, laser-induced phase transitions enable resonance switching in nanostructured chalcogenide meta-surfaces and allow for reversible direct-writing of arbitrary meta-devices in chalcogenide thin films, including dynamically refocusable, chromatically correctable and super-oscillatory lenses, and near-infrared-resonant photonic metamaterials