Abstract
Kerr cavity solitons (CSs) are pulses that propagate unperturbed in a driven nonlinear optical resonator. They currently play a crucial role in the formation of highly coherent optical frequency combs [1]. CSs are well described by the so-called Lugiato-Lefever equation (LLE) [1-2]. The CS peak power as a function of the driving laser phase detuning from the closest cavity resonance, δ0, obtained by numerical continuation of the LLE, is shown in Fig. 1a. The highest reachable detuning, δmax, is proportional to the driving power Pin. In particular, the CS peak power (duration) increases (decreases) with the cavity detuning. Then, to generate the shortest CSs with the highest peak power, one should operate at the largest detuning [2-3]. However, for short CSs in resonators made of silica, the stimulated Raman scattering (SRS) must be considered. This inelastic scattering is responsible for red-shifting the CS spectrum from the driving frequency (see Fig 1a, inset).
© 2023 IEEE
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