Author
Listed:
- Shuai Wan
(University of Science and Technology of China
University of Science and Technology of China
University of Science and Technology of China)
- Pi-Yu Wang
(University of Science and Technology of China
University of Science and Technology of China
University of Science and Technology of China)
- Ming Li
(University of Science and Technology of China
University of Science and Technology of China
University of Science and Technology of China)
- Rui Ma
(Nankai University)
- Rui Niu
(University of Science and Technology of China
University of Science and Technology of China
University of Science and Technology of China)
- Fang-Wen Sun
(University of Science and Technology of China
University of Science and Technology of China
University of Science and Technology of China)
- Fang Bo
(Nankai University)
- Guang-Can Guo
(University of Science and Technology of China
University of Science and Technology of China
University of Science and Technology of China)
- Chun-Hua Dong
(University of Science and Technology of China
University of Science and Technology of China
University of Science and Technology of China)
Abstract
Optical frequency combs (OFCs), composed of equally spaced frequency lines, are essential for communications, spectroscopy, precision measurement, and fundamental physics research. Recent developments in integrated photonics have advanced chip-scale OFCs, enabling on-chip OFC generation via the Kerr or electro-optic (EO) effect. However, these nonlinear processes can occur simultaneously and are often accompanied by parasitic effects, like Raman scattering, which may impede broadband and low-noise microcomb generation. Here, we harness these interactions to demonstrate a novel OFC, the self-locked Raman-electro-optic (REO) microcomb in a lithium niobate microresonator. By leveraging the collaboration of EO, Kerr and Raman scattering, the REO microcomb spans over 300 nm (~1400 lines) with a 26.03 GHz repetition rate, achieving low-noise operation without external feedback. Our approach points to a direction for improving the performance of microcombs and paves the way for exploring new nonlinear physics, such as new laser locking techniques, through the multi-nonlinear synergy.
Suggested Citation
Shuai Wan & Pi-Yu Wang & Ming Li & Rui Ma & Rui Niu & Fang-Wen Sun & Fang Bo & Guang-Can Guo & Chun-Hua Dong, 2025.
"Self-locked broadband Raman-electro-optic microcomb,"
Nature Communications, Nature, vol. 16(1), pages 1-7, December.
Handle:
RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-60161-1
DOI: 10.1038/s41467-025-60161-1
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