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A groundbreaking study on high-performance on-chip optical frequency combs has been conducted by a research team led by Guangcan Guo at the University of Science and Technology of China (USTC). Collaborating with the research group headed by Fang Bo at Nankai University, the team, under the guidance of Chunhua Dong, successfully integrated the electro-optic effect, Kerr nonlinearity, and Raman scattering in lithium niobate microcavities to create a novel self-locked Raman-Electro-Optic (REO) microcomb. This innovative microcomb boasts the ability to adaptively lock without the need for external electronic feedback, exhibiting a remarkable spectral width exceeding 300nm and a repetition frequency of 26.03GHz. These characteristics underscore its excellent coherence and tunability.
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