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On-chip visible comb generation covering from 720 to 840 nm is demonstrated in AlN-on-sapphire microring resonators. Broadband frequency conversion of near-infrared Kerr comb into visible region is achieved in slightly phase-mismatched condition.
Tsinghua National Laboratory for Information Science and Technology/State Key Lab on Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Tsinghua National Laboratory for Information Science and Technology/State Key Lab on Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Tsinghua National Laboratory for Information Science and Technology/State Key Lab on Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Tsinghua National Laboratory for Information Science and Technology/State Key Lab on Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China