Metaphotonics has emerged as a transformative platform for manipulating light at the nanoscale, enabling next-generation optical devices with unprecedented efficiency, tunability, and functional versatility. By integrating man-made materials (metamaterials) and photonics, researchers develop compact, high-performance structures that surpass conventional optics, driving advancements in nonlinear optics, quantum photonics, and advanced imaging. Our research explores nonlinear optical and photoluminescence properties of metaphotonic structures composed of diverse materials. These insights open new avenues for applications in light generation, optical information processing, and bioimaging.

In this talk, I will discuss strategies to enhance harmonic generation and control photoluminescence in halide perovskite nanostructures —materials renowned for their exceptional optical properties and fabrication ease. I will then present our results on the enhancement of optical harmonic generation within engineered metasurfaces, emphasizing significant even-order harmonic generation in centrosymmetric materials and unconventional power dependencies. Finally, I will explore the generation of chiral optical harmonics from planar metasurfaces exhibiting linear and nonlinear circular dichroism, highlighting their potential for advanced photonic applications.