Inverse-Designed Nonlinear Photonics in 4H-SiC

We optimized and fabricated inverse-designed nano-resonators in 4H-Silicon-Carbide-on-Insulator to take advantage of the material's large nonlinear optical coefficients and low waveguide loss. We characterize high quality factors of the nano-resonators and observe nonlinear frequency conversion. Such nonlinear frequency generation has a wide range of important applications, from chip-scale optical parametric oscillator lasers to quantum frequency conversion of solid-state spin qubits.