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Thermal instabilities, frequency comb formation, and temporal oscillations in Kerr microresonators

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posted on 2023-11-30, 20:59 authored by Amir Leshem, Zhen Qi, Thomas F. Carruthers, Curtis R. Menyuk, Omri Gat
We analyze the consequences of dissipative heating in driven Kerr microresonators theoretically and numerically, using a thermal Lugiato-Lefever model. We show that thermal sensitivity modifies the stability range of continuous wave in a way that blocks direct access to broadband frequency-comb forming waveforms, and we propose a deterministic access path that bypasses the thermal instability barrier. We describe a novel thermal instability that leads to thermooptical oscillations via a Hopf bifurcation.

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