Very High-Q photonic microdisk resonator in an air-clad, thin-film SiN at near-visible wavelengths

Very high-Q photonic microdisk resonators in an air-clad thin-film SiN platform at near-visible wavelengths is demonstrated. The high Qs enabled by fabrication optimization result in the increased coherence time of the intracavity photon and provides better coherent interaction with atoms.