Coherent modulation of chiral nonlinear optics with crystal symmetry

Light modulation is of paramount importance for photonics and optoelectronics. Here we report all-optical coherent modulation of third-harmonic generation (THG) with chiral light via the symmetry enabled polarization selectivity. The concept is experimentally validated in monolayer materials (MoS2) with modulation depth approaching similar to 100%, ultra-fast modulation speed (

Automated summary

Light modulation is crucial for photonics and optoelectronics. In this study, we demonstrate all-optical coherent modulation of third-harmonic generation using chiral light with polarization selectivity enabled by symmetry. Experimental results show modulation depth approaching 100% and ultra-fast modulation speed in monolayer materials (MoS2).