  Perfect vortex beams are the orbital angular momentum (OAM)-carrying beams
with fixed annular intensities, which provide a better source of OAM than
traditional Laguerre- Gaussian beams. However, ordinary schemes to obtain the
perfect vortex beams are usually bulky and unstable. We demonstrate here a
novel generation scheme by designing planar Pancharatnam-Berry (PB) phase
elements to replace all the elements required. Different from the conventional
approaches based on reflective or refractive elements, PB phase elements can
dramatically reduce the occupying volume of system. Moreover, the PB phase
element scheme is easily developed to produce the perfect vector beams.
Therefore, our scheme may provide prominent vortex and vector sources for
integrated optical communication and micromanipulation systems.
