Supercontinuum Amplification by Kerr Instability

We extend four-wave mixing to the strong-field regime, leading to Kerr instability amplification, with high gain
$(\mathrm{g} > 20\text{mm}^{-1})$
and broadband amplification (550 - 950 nm). We demonstrate that these amplified broadband pulses can be used as a source for nonlinear optics (by generating the third harmonic) and spectroscopy (such as femtosecond stimulated Raman scattering). We discuss routes for few-cycle pulse amplification for attosecond science.