Generation of high-intensity spectral supercontinuum of more than two octaves in a water jet

Abstract

In this paper, we demonstrate experimentally for the first time (to our knowledge) the generation of spectral supercontinuum (SC) of more than two octaves with high intensity in a water jet. The spectrum of the generated SC extends from 350 to 1400 nm, with intensities up to 10¹¹ W/cm², and its generation efficiency is more than 50%. For the pump intensity 3.0×10¹² W/cm² in the spectral range from 400 to 800 nm, the spectrum is nearly flat (less than 40% deviation), which is useful for many applications.