title: Manipulating orbital angular momentum of light with tailored in-plane polarization states.
abstract: Generally, polarization and phase are considered as two relatively independent parameters of light, and show little interaction when a light propagates in a homogeneous and isotropic medium. Here, we reveal that orbital angular momentum (OAM) of an optical vortex beam can be modulated by specially-tailored locally linear polarization states of light under a tightly-focusing conditon. We perform both theoretical and experimental studies of this interaction between vortex phase and vector polarization, and find that an arbitrary topological charge value of OAM can be achieved in principle through vector polarization modulation, in contrast to the spin-orbital conversion that yields only the ± ћ OAM values through circular polarization. We verify the modulation of optical OAM state with vector beams by observing the orbital rotation of trapped particles.
authors.affiliation: Nanophotonics Research Centre, Shenzhen University &Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Luping
authors.initials: L
authors.lastname: Du
authors.affiliation: School of Science, Shandong University of Technology, Zibo 255049, China.
authors.forename: Zhongsheng
authors.initials: Z
authors.lastname: Man
authors.affiliation: Nanophotonics Research Centre, Shenzhen University &Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Yuquan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Nanophotonics Research Centre, Shenzhen University &Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Changjun
authors.initials: C
authors.lastname: Min
authors.affiliation: Institute of Oncology, Tianjin Union Medicine Centre, Tianjin 300121, China.
authors.forename: Siwei
authors.initials: S
authors.lastname: Zhu
authors.affiliation: Nanophotonics Research Centre, Shenzhen University &Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Xiaocong
authors.initials: X
authors.lastname: Yuan