Parametrically tunable soliton-induced resonant radiation by three-wave mixing

Binbin Zhou, Xing Liu, Hairun Guo, Xianglong Zeng, X. F. Chen, Hung-ping Chung, Yen-Hung Chen, Morten Bache

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    We show that a temporal soliton can induce resonant radiation by three-wave mixing nonlinearities. This constitutes a new class of resonant radiation whose spectral positions are parametrically tunable. The experimental verification is done in a periodically poled lithium niobate crystal, where a femtosecond near-IR soliton is excited and resonant radiation waves are observed exactly at the calculated soliton phasematching
    wavelengths via the sum- and difference-frequency generation nonlinearities. This extends the supercontinuum bandwidth well into the mid IR to span 550–5000 nm, and the mid-IR edge is parametrically tunable over 1000 nm by changing the three-wave mixing phase-matching condition.
    The results are important for the bright and broadband supercontinuum generation and for the frequency comb generation in quadratic nonlinear microresonators.
    Original languageEnglish
    Article number143901
    JournalPhysical Review Letters
    Issue number14
    Number of pages7
    Publication statusPublished - 2017


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