Second order nonlinear optics in AlGaAs metasurfaces

¹ Department of Information Engineering, University of Brescia, Brescia, Italy
² Department of Engineering, University of Palermo, Palermo, Italy
³ Matériaux et Phénomènes Quantiques, Université Paris Cité, Paris, France

^* e-mail : davide.rocco@unibs.it

Abstract

Recently, nonlinear optics at the nanoscale level has emerged as a promising branch of nanophotonics. In this work, we focus our attention on Aluminum Gallium Arsenide (AlGaAs) nanoantennas and metasurfaces for efficient and controlled second harmonic photon emission. After a brief introduction concerning the main studies in this field, we present the latest results achieved in AlGaAs platforms both in the lossless and absorption regimes.