Huai‐Yu Wu

Halogen‐Bond Dimensionality Controls π–π Packing to Unlock Ultrahigh Second‐Harmonic Generation and Giant Birefringence

ABSTRACT Compact all‐solid‐state lasers require nonlinear optical crystals that combine strong second‐harmonic generation (SHG) with large birefringence, yet planar π ‐conjugated molecules often pack antiparallel, canceling their macroscopic second‐order response. Here, we break...