Visible and near-infrared microdisk resonators on a 4H-silicon-carbide-on-insulator platform

Wavelength-sized microdisk resonators were fabricated on a single crystalline 4H-silicon-carbide-on-insulator (4H-SiCOI) platform. By carrying out micro-photoluminescence measurements at room temperature, we show that the support whispering-gallery modes (WGMs) with quality factors up to 5.25 × 10 3 and mode volumes down 2.61 ( ? / n stretchy="false">) visible near-infrared wavelengths. Moreover, demonstrated wavelength-sized exhibit WGMs whose resonant wavelengths are compatible zero-phonon lines of silicon related spin defects in 4H-SiCOI, making them promising candidate for applications cavity quantum electrodynamics integrated photonic circuits.