2019/09/16 by Alexander W. Bruch, Bruch, Alexander W., Xianwen Liu +6
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Applied Physics (physics.app-ph) #FOS: Physical sciences #Mechanical and Optical Resonators #Optics (physics.optics) #Photonic and Optical Devices #Semiconductor Lasers and Optical Devices
paper · pdf · doi:10.48550/arxiv.1909.07422
openalex publication_date 2019/09/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Optical parametric oscillators (OPOs) have been widely used for decades as\ntunable, narrow linewidth, and coherent light sources for reaching long\nwavelengths and are attractive for applications such as quantum random number\ngeneration and Ising machines. To date, waveguide-based OPOs have suffered from\nrelatively high thresholds on the order of hundreds of milliwatts. With the\nadvance in integrated photonic techniques demonstrated by high-efficiency\nsecond harmonic generation in aluminum nitride (AlN) photonic microring\nresonators, highly compact and nanophotonic implementation of parametric\noscillation is feasible. Here, we employ phase-matched AlN microring resonators\nto demonstrate low-threshold parametric oscillation in the telecom infrared\nband with an on-chip efficiency up to 17% and milliwatt-level output power. A\nbroad phase-matching window is observed, enabling tunable generation of signal\nand idler pairs over a 180 nm bandwidth across the C band. This result\nestablishes an important milestone in integrated nonlinear optics and paves the\nway towards chip-based quantum light sources and tunable, coherent radiation\nfor spectroscopy and chemical sensing.\n