Journal
COMMUNICATIONS PHYSICS
Volume 3, Issue 1, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s42005-019-0274-x
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Funding
- Office of Naval Research [N00014-16-1-2094]
- National Science Foundation [1824568, 1810506, 1829071]
- National Science Foundation (Emerging Frontiers in Research and Innovation) [ACQUIRE 1741707]
- Lawrence Livermore National Laboratory [B622827]
- Air Force Office of Scientific Research Young Investigator Award [FA9550-15-1-0081]
- University of California-National Laboratory Office of the President center grant [LFR-17-477237]
- Direct For Education and Human Resources
- Division Of Graduate Education [1829071] Funding Source: National Science Foundation
- Directorate For Engineering [1810506] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys [1810506] Funding Source: National Science Foundation
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Multispectral frequency combs provide new architectures for laser spectroscopy, clockwork, and high-capacity communications. Frequency microcombs have demonstrated remarkable impact in frequency metrology and synthesis, albeit with spectral bandwidth bounded by intrinsic second-order dispersion and consequently low-intensities at the spectral edges. Here we report coherent satellite clusters in multispectral regenerative frequency microcombs with enhanced intensities at the octave points and engineered frequency span. Beyond the conventional bandwidth of parametric oscillation, the regenerative satellites are facilitated by higher-order dispersion control, allowing for multiphase-matched parametric processes. The satellite span is deterministically controlled from 34 to 72 THz by pumped at C/L-bands, with coherence preserved with the central comb through the nonlinear parametric process. We further show the mirrored appearance of the satellite transition dynamics simultaneously with the central comb at each comb state. These multispectral satellites extend the scope of parametric-based frequency combs and provide a unique platform for clockwork, spectroscopy and communications. Microresonator Kerr frequency combs are promising systems for high-capacity optical communication schemes, but their bandwidth is limited by intrinsic chromatic dispersion. Here, coherent satellite clusters are observed beyond the conventional bandwidth of parametric oscillation, whose frequency can be tuned deterministically.
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