title: Generation of perfect vortex and vector beams based on Pancharatnam-Berry phase elements.
abstract: 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.
authors.affiliation: Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China.
authors.forename: Yachao
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China.
authors.forename: Yougang
authors.initials: Y
authors.lastname: Ke
authors.affiliation: Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China.
authors.forename: Junxiao
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China.
authors.forename: Hailu
authors.initials: H
authors.lastname: Luo
authors.affiliation: Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China.
authors.forename: Shuangchun
authors.initials: S
authors.lastname: Wen
authors.affiliation: Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China.
authors.forename: Dianyuan
authors.initials: D
authors.lastname: Fan