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Solitons are waves with just a single crest. They result when a wave’s natural tendency to spread as it propagates is cancelled out by an inherently nonlinear phenomenon known as self-focusing. This means that solitons can travel a long distance whilst maintaining their same shape.
Optical frequency combs are conventionally defined as a set of phase-locked, equally spaced spectral lines. Here, using a two-dimensional array of Floquet topological ring resonators, the authors propose novel incommensurate combs with phase-locked spectral lines that are not all equally spaced.
The authors revisit ultrafast fiber lasers with anomalous dispersion to propose a new laser design enhancing dissipative effects. Their approach yields high-energy few-picosecond pulses, blending soliton features for improved flexibility and scalability.
This work focuses on the study of dynamic gain driven mode-locking in GHz fiber lasers and finally realizes stable mode-locking with a high fundamental repetition rate of 21 GHz.
Real-time electron dynamics studies of complex systems require bright attosecond pump-probe capabilities at X-ray wavelengths. Nano-focusing schemes reaching intensities in excess of 1022 W cm–2 and superradiant cascaded amplification of attosecond pulses to TW powers at free-electron lasers are providing transformative capabilities in this burgeoning field.
Vladimir Zakharov was a man of a strong passion and grand intellect, who was equally and deservedly proud of both his scientific achievements and his poetry.
Upon combining dissipative and nonlinear effects in a bipartite lattice of cavity polaritons, dissipatively stabilized bulk gap solitons emerge, which create a topological interface.
Solitary waves — solitons — occur in a wide range of physical systems with a broad array of attributes and applications. Carefully engineered light–matter interactions have now produced an optomechanical dissipative soliton with promising properties.
Light propagating in the topological edge channel of an array of ring resonators is predicted to generate nested frequency combs: like a Matryoshka doll containing a set of smaller dolls, each ‘tooth’ of the comb comprises another frequency comb.
