Continuous wave driving elucidates the desynchronisation dynamics of ultrashort dissipative Raman solitons generated in dispersive Kerr resonators

TL;DR

This paper investigates how continuous wave driving influences the formation and dynamics of ultrashort dissipative Raman solitons in dispersive Kerr resonators, revealing new insights into their existence and desynchronisation mechanisms.

Contribution

It demonstrates that Raman solitons can form under continuous wave driving and clarifies the role of desynchronisation in their dynamics, a novel insight into soliton behavior in Kerr resonators.

Findings

Raman solitons can exist with continuous wave driving.

Desynchronisation critically affects soliton existence.

Provides a qualitative explanation for soliton stability range.

Abstract

Phase-coherent pulsed driving of passive optical fiber resonators enable the generation of ultrashort dissipative Raman solitons with durations well below 100~fs. The existence and characteristics of such solitons critically depends on the desynchronisation between the pulsed driving source and the resonator roundtrip time, yet the full mechanism through which these dependencies arise remains unclear. Here, we numerically demonstrate that Raman solitons can exist even under conditions of continuous wave driving, and by numerically examining the existence and characteristics of Raman solitons under such conditions, we elucidate the role of desynchronisation in pulse-driven systems. In addition to providing new insights on the existence and characteristics of ultrashort Raman solitons, our analysis yields a qualitative explanation for the range of desynchronisations over which the solitons can exist.