title: Optical vortices induced in nonlinear multilevel atomic vapors.
abstract: In a numerical investigation, we demonstrate the existence and curious evolution of vortices in a ladder-type three-level nonlinear atomic vapor with linear, cubic, and quintic susceptibilities considered simultaneously with the dressing effect. We find that the number of beads and topological charge of the incident beam, as well as its size, greatly affect the formation and evolution of vortices. To determine the number of induced vortices and the corresponding rotation direction, we give common rules associated with the initial conditions coming from various incident beams.
authors.affiliation: Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an, China. zhangyiqi@mail.xjtu.edu.cn
authors.forename: Yiqi
authors.initials: Y
authors.lastname: Zhang
authors.forename: Zhenkun
authors.initials: Z
authors.lastname: Wu
authors.forename: Chenzhi
authors.initials: C
authors.lastname: Yuan
authors.forename: Xin
authors.initials: X
authors.lastname: Yao
authors.forename: Keqing
authors.initials: K
authors.lastname: Lu
authors.forename: Milivoj
authors.initials: M
authors.lastname: Belić
authors.forename: Yanpeng
authors.initials: Y
authors.lastname: Zhang