  We demonstrate numerically and experimentally the generation of powerful
supercontinuum vortices from femtosecond vortex beams by using multiple thin
fused silica plates. The supercontinuum vortices are shown to preserve the
vortex phase profile of the initial beam for spectral components ranging from
500 nm to 1200 nm. The transfer of the vortex phase profile results from the
inhibition of multiple filamentation and the preservation of vortex ring with
relatively uniform intensity distribution by means of the thin-plate scheme,
where the supercontinuum is mainly generated from the self-phase modulation and
self-steepening effects. Our scheme works for vortex beams with different
topological charges, which provides a simple and effective method to generate
supercontinuum vortices with high power.
