Intracavity Epsilon-Near-Zero Dual-Range Frequency Switch.

ABSTRACT: Epsilon-near-zero (ENZ) nanophotonic devices with zero permittivity are known to exhibit adiabatic frequency translation via temporal refraction under extracavity excitation by intense light sources, which are however hard to integrate on-chip owing to a high demand for energy density. As this class of complementary-metaloxide-semiconductor-compatible materials is progressing toward on-chip photonic integration, a more versatile solution with less intensity requirements needs to be further explored. Here, for the first time, by leveraging the abundant frequency mode resources inside a resonant cavity, we experimentally demonstrate the realization of input-dependent dual-range frequency switching via a single intracavity ENZ element. By utilizing the linear and nonlinear effects induced by

SUBMITTER: Wu J 

PROVIDER: S-EPMC11926959 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature