metasurface

Physics

Twisted Light: A new metasurface offers a compact solution for circularly polarized light

Generation of circularly polarized nonlinear signals from rotationally symmetric chiral metasurfaces under arbitrary polarization excitation. Credit: SUTD Left and right circularly polarized light, in which electromagnetic waves spiral clockwise and counterclockwise, plays an important role in a wide range of applications, from enhancing medical imaging technology to enabling advanced communication technologies. However, generating circularly polarized light often requires complex and…