Abbreviated Journal Title
WHITE-LIGHT CONTINUUM; LASER-PULSES; GENERATION; SAPPHIRE; FIBER; Optics
We experimentally demonstrate that the use of a weak seed pulse of energy less than 0.4% of the pump results in a spectral energy enhancement that spans over 2 octaves and a total energy enhancement of more than 3 times for supercontinua generated by millijoule level femtosecond pulses in Krypton gas. Strong four-wave mixing of the pump-seed pulse interacting in the gas is observed. The spectral irradiance generated from the seeding process is sufficiently high to use white-light continuum as an alternative to conventional tunable sources of radiation for applications such as nonlinear optical spectroscopy.
Ensley, Trenton R.; Fishman, Dmitry A.; Webster, Scott; Padilha, Lazaro A.; Hagan, David J.; and Van Stryland, Eric W., "Energy and spectral enhancement of femtosecond supercontinuum in a noble gas using a weak seed" (2011). Faculty Bibliography 2010s. 1283.