Boosting second harmonic generation with TMDs monolayer

Fig. 1. Schematic diagram of the dual BICs scheme for boosting SHG with monolayer WS2 on top of the photonic grating slab. Credit: Compuscript Ltd Two photons can be merged to generate one photon with doubled frequency in nonlinear optical materials. This process is known as second harmonic generation (SHG), which was first discovered in … Read more