Journal
OPTICA
Volume 7, Issue 10, Pages 1275-1278Publisher
Optica Publishing Group
DOI: 10.1364/OPTICA.400994
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Funding
- David and Lucile Packard Foundation
- Sandia National Laboratories [DENA0003525, 052181 213-1]
- Defense Advanced Research Projects Agency [HR0011-16-C-0118]
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Thin film lithium niobate (LN) is bringing renewed potential to the realm of integrated photonics. Its strong quadratic and cubic nonlinearities as well as wide transparency window are ideal for realizing on-chip self-referenced soliton microcombs. However, broadband Kerr cavity soliton generation in LN thin films remains challenging due to limited dispersion control and competition from strong stimulated Raman scattering (SRS). Here, we demonstrate the generation of soliton microcombs in LN thin films featuring broad spectral spans up to 4/5 octaves with the emission of dual dispersion waves (2/3 octaves apart) and sub-terahertz repetition rates (down to 335 GHz) by suppressing strong SRS. Numerical simulations based on coupled-mode equations that incorporate Raman effects further elucidate the soliton dynamics in this highlyRaman-active material system. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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