Multiple Scattering and Random Quasi-Phase-Matching in Disordered Assemblies of LiNbO₃ Nanocubes.

ABSTRACT: Nonlinear disordered photonic media (NDPM), composed of a random configuration of noncentrosymmetric crystals, offer a versatile platform to tailor nonlinear optical effects. The second-harmonic generation (SHG) and its random quasi-phase-matching (RQPM) in the multiple scattering regime are still poorly explored. In this work, we bottom-up assemble NDPM in two different geometries by using LiNbO₃ nanocubes as building blocks and investigate both the multiple scattering and the nonlinear properties. We produce disordered slabs with a continuously variable thickness and microspheres with different diameters, which display a remarkable strong light scattering, evidenced by a subwavelength transport mean free path (). We first provide explicit evidence that the SHG power scales lin

SUBMITTER: Morandi A 

PROVIDER: S-EPMC9205311 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature