Multioctave Supercontinua from Shock-Coupled Soliton Self-Compression in Hollow-Core Antiresonance-Guiding PCF

Fiber-optic multioctave supercontinuum generation is a unique resource for ultrafast optical science' enabling ultrabroadband frequency-comb technologies and paving the way for the photonics of subcycle field waveforms. Extension of these methods to the mid-infrared spectral range is challenging as it calls for new fiber solutions that would allow a high optical nonlinearity in the mid-IR to be combined with broadband transmission and suitably tailored dispersion. Kagome-cladding and antiresonance-guiding single-ring (SR) hollow-core (HC) photonic-crystal fibers stand out as examples of fiber designs that can provide this unique combination of properties [1–4].