Generation of Kerr combs in MgF<inf>2</inf> and CaF<inf>2</inf> microresonators


We report on a study of hyper-parametric oscillation in high-Q calcium fluoride and magnesium fluoride optical microresonators, and show that, magnesium fluoride microres-onators generate wider Raman-free Kerr frequency combs at telecom wavelengths, in contrast with calcium fluoride ones. We observed 30 nm wide frequency combs in magnesium fluoride… (More)


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