Nonlinear and active metasurfaces

Metasurfaces have received significant attention in the context of non-linear optics, since they allow a dramatic boosting of light-matter interactions, and a corresponding enhancement of non-linear processes. In this talk, I will overview our recent research progress in the area of nonlinear and active metasurfaces, demonstrating opportunities for efficient frequency conversion processes and wave mixing, non-reciprocity, non-linear image processing, and lasing. The integration of 2D materials and polaritonic features, as well as optical pumping, enables the opportunity of accessing low-threshold lasing, polariton condensation and other exotic forms of light manipulation within an ultrathin platform, in which photonic and materials engineering play a pivotal synergistic role.