A simple method for generating inhomogeneously polarized vector beam

Vector beam has attracted much attention recently due to novel properties and applications. And experimental generation of vector beam is very important and necessary when it is used in practice. In this paper, a simple and convenient method for generating inhomogeneously polarized vector beam is proposed. Conic polarization device is a core component that can convert incident beam into inhomogeneously polarized vector beam. And polarizing film is curved to construct this kind of conic polarization device. Experimental results show that this kind of method is valid and feasible, though attention should be paid to junction in the construction process of conic polarization device.

Research highlights
► A simple method for generating inhomogeneously polarized vector beam is proposed.
► Polarizing film is curved to construct conic polarization device in the method.
► Attention should be paid to the junction process of conic polarization device.
► Corresponding experiments have been made successfully.