Second Order Optical Nonlinearity Originated from Ferroelectric Spherulite with Vortex Domain (Advanced Optical Materials 14/2025)

Abstract

Optical Vortex Generations

A spherulite crystal with ferroelectric vortex domain is experimentally demonstrated to show second order nonlinear effect in a circular symmetry, which could be a powerful device, producing optical vortex beams of multipole wavelengths, polarizations states and topological charges. This may provide potential applications in photonic chips or large capacity optical communications. More details can be found in article 2403095 by Kristiaan Neyts, Jingbo Sun, Ji Zhou, and co-workers.