Modulation instability and frequency-comb generation in hybrid quadratic-cubic resonators with spectral filtering

Minji Shi, Nicolas Englebert, François Leo, Dmitry V. Skryabin, Auro M. Perego*

*Corresponding author for this work

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Abstract

We present an analytical and numerical investigation into the phenomenon of filter-induced modulation instability in passive hybrid optical resonators exhibiting quadratic and cubic nonlinearity. We show that asymmetric spectral losses, with respect to the continuous-wave solution frequency, can trigger sideband amplification in the normal dispersion regime. We calculate the parametric gain and demonstrate the associated pattern formation process. We furthermore show how this parametric process can be exploited to generate optical frequency combs with a tunable repetition rate.
Original languageEnglish
Article number023522
JournalPhysical Review A
Volume112
Issue number2
Early online date28 Aug 2025
DOIs
Publication statusPublished - 28 Aug 2025

Bibliographical note

This accepted manuscript is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). The published article, 'Shi, M, Englebert, N, Leo, F, Skryabin, DV & Perego, AM 2025, 'Modulation instability and frequency-comb generation in hybrid quadratic-cubic resonators with spectral filtering', Physical Review A, vol. 112, no. 2, 023522,' is available at: https://doi.org/10.1103/3byt-r77p

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