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Updated: May 22, 2025

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
Published on: December 15, 2021
Theory of multicolor soliton microcombs
Abstract:
We present a general theory of multicolor soliton microcombs. These frequency combs require engineered dispersion and have an optical spectrum consisting of multiple spectral windows. Our theory is based on a multiple-scale approach applied to the Lugiato-Lefever equation (LLE) and provides a framework to investigate different pumping configurations. For multi-frequency pumping, we predict a decreasing pumping threshold as the number of spectral windows increases due to an enhanced effective nonlinear parameter. However, comb formation does not require multi-frequency pumping and can emerge even with a single driving field.
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