title: Higher-order laser mode converters with dielectric metasurfaces.
abstract: A simple and compact converter based on the dielectric metasurface is proposed for the transformation of Gaussian mode to Hermite-Gaussian and Laguerre-Gaussian modes. We establish the relationship between the phase of a desired mode and the local orientation of the optical axis based on the evolution of Pancharatnam-Berry phase on Poincaré sphere. By controlling the local orientation of the optical axis in the dielectric metasurface, we can achieve any desired higher-order laser mode.
authors.forename: Yongli
authors.initials: Y
authors.lastname: He
authors.forename: Zhenxing
authors.initials: Z
authors.lastname: Liu
authors.forename: Yachao
authors.initials: Y
authors.lastname: Liu
authors.forename: Junxiao
authors.initials: J
authors.lastname: Zhou
authors.forename: Yougang
authors.initials: Y
authors.lastname: Ke
authors.forename: Hailu
authors.initials: H
authors.lastname: Luo
authors.forename: Shuangchun
authors.initials: S
authors.lastname: Wen