2021/05/06 by Chengli Wang, Wang, Chengli, Zhiwei Fang +29
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Optics (physics.optics) #Photonic and Optical Devices #Solid State Laser Technologies
paper · pdf · doi:10.48550/arxiv.2105.02533
openalex publication_date 2021/05/06 · openalex created_date 2021/05/10 · openalex updated_date 2026/07/28
The realization of ultrahigh quality (Q) resonators regardless of the underpinning material platforms has been a ceaseless pursuit, because the high Q resonators provide an extreme environment of storage of light to enable observations of many unconventional nonlinear optical phenomenon with high efficiencies. Here, we demonstrate an ultra-high Q factor (7.1*106) microresonator on the 4H-silicon-carbide-on-insulator (4H-SiCOI) platform in which both \chi^(2) and \chi^(3) nonlinear processes of high efficiencies have been generated. Broadband frequency conversions, including second-, third-, fourth-harmonic generation were observed. Cascaded Raman lasing was demonstrated in the SiC microresonator for the first time to the best of our knowledge. Broadband Kerr frequency combs covering from 1300 to 1700 nm were achieved using a dispersion-engineered SiC microresonator. Our demonstration is a significant milestone in the development of SiC photonic integrated devices.