Fibre supercontinuum generation: Progress and perspectives

Broadband supercontinuum generation in optical fibre has revolutionized multiple fields of physics including frequency metrology, spectroscopy, and imaging. Although the last twenty five years have seen many remarkable results, the field remains as active as ever, and this perspective aims to provide insights into current and emerging developments. Particular topics of review include recent advances in new fibre materials and designs, the use of gas-filled hollow core fibres, multimode and spatio-temporal effects, improved understanding of the underlying nonlinear dynamics, and techniques for spectral optimisation using machine learning.