High-energy multidimensional solitary states in hollow-core fibres

Abstract

Multidimensional solitary states (MDSS)—self-sustained wavepackets—have attracted renewed interest in many different fields of physics, such as topological states and spatiotemporal mode-locked laser 1 . They are of particular importance in nonlinear optics, especially for the nonlinear propagation of ultrashort pulses in multimode fibres, which contain rich spatiotemporal intermodal interactions and dynamics, albeit often in an unstable manner. Here, we report the first observation of the formation of highly stable multidimensional solitary states in a molecular gas-filled large-core hollow-core fibre 2 .