Two-dimensional frequency comb from cascaded nonlinear mixing of a multi-color soliton in an integrated microresonator
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Gregory Moille, Pradyoth Shandilya, Curtis R. Menyuk, Avik Dutt, Yanne K. Chembo, and Kartik Srinivasan "Two-dimensional frequency comb from cascaded nonlinear mixing of a multi-color soliton in an integrated microresonator", Proc. SPIE PC12407, Laser Resonators, Microresonators, and Beam Control XXV, PC124070A (17 March 2023); https://doi.org/10.1117/12.2648900
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©2023 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
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Abstract
We present the creation of a two-dimensional frequency comb in a single integrated microring resonator through its dual pumping. We demonstrate experimentally and theoretically that dual-pumping allows for the creation of a multi-color soliton with a single group rotation velocity yet multiple phase rotation velocities, yielding multiple soliton eigenfrequencies (i.e. colors). We show that, thanks to the material's nonlinearity, its eigenfrequencies can cascade through four-wave mixing, creating a comb. Because this dimension is orthogonal to the azimuthal mode number dimension, the extracted frequency comb is ultimately a two-dimensional one.