# Publication Citation: Parametric seeding of a microresonator optical frequency comb

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Author(s): Scott B. Papp; Pascal P. Del'Haye; Scott A. Diddams; Parametric seeding of a microresonator optical frequency comb July 16, 2013 We have investigated parametric seeding of a microresonator frequency comb (microcomb) by way of a pump laser with two intensity modulation sidebands. We show that the pump-sideband spacing is precisely replicated throughout the microcomb's optical spectrum, and we demonstrate a record absolute line spacing stability for microcombs of $1.6\times10^{-13}$ at 1 s. Parametric comb generation is complicated, and often non-equidistant subcombs are observed. Our results demonstrate that parametric seeding can not only control the subcombs, but it can lead to the generation of a strictly equidistant microcomb spectrum. Optics Express 21 15 pp. 1 - 10 frequency metrology;microresonators;nonlinear optics;optical frequency combs Physics