Second-harmonic generation in NbOI₂-integrated silicon nitride microdisk resonators.

ABSTRACT: In recent years, two-dimensional (2D) niobium oxide dihalides (e.g., NbOI₂) have garnered significant research interest in nonlinear photonics due to their prominent second-order nonlinear optical properties. Integrating these materials with high-quality-factor optical microcavities represents a crucial approach for developing high-performance on-chip nonlinear optical devices. This work demonstrates NbOI₂-integrated silicon nitride (Si₃N₄) microdisk resonators that achieve second-harmonic generation under low-power (sub-milliwatt) continuous-wave laser pumping, leveraging the superior second-order nonlinearity of NbOI₂ and the strong optical field confinement capability of Si₃N₄ microdisks. The conversion efficie

SUBMITTER: Liu N 

PROVIDER: S-EPMC12717909 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature