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Synchronization of nonsolitonic Kerr combs

Journal Article · · Science Advances

Synchronization is a ubiquitous phenomenon in nature that manifests as the spectral or temporal locking of coupled nonlinear oscillators. In the field of photonics, synchronization has been implemented in various laser and oscillator systems, enabling applications including coherent beam combining and high-precision pump-probe measurements. Recent experiments have also shown time-domain synchronization of Kerr frequency combs via coupling of two separate oscillators operating in the dissipative soliton [i.e., anomalous group velocity dispersion (GVD)] regime. Here, we demonstrate all-optical synchronization of Kerr combs in the nonsolitonic, normal GVD regime in which phase-locked combs with high pump-to-comb conversion efficiencies and relatively flat spectral profiles are generated. Our results reveal the universality of Kerr comb synchronization and extend its scope beyond the soliton regime, opening a promising path toward coherently combined normal GVD Kerr combs with spectrally flat profiles and high comb-line powers in an efficient microresonator platform.

Research Organization:
Columbia University, New York, NY (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); Air Force Office of Scientific Research (AFOSR); Defense Advanced Research Projects Agency (DARPA)
Grant/Contract Number:
AR0000843
OSTI ID:
1904823
Journal Information:
Science Advances, Journal Name: Science Advances Journal Issue: 43 Vol. 7; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

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