Dragomir N. Neshev, Alexander Dreischuh, Georgi Maleshkov, Marek Samoc, and Yuri S. Kivshar
Abstract.
We report on the generation of femtosecond supercontinuum in a solid state medium by an optical vortex beam. We show that the continuum generation process is initiated by the filamentation of the vortex, resulting in a spatially divergent continuum.