title: Efficient, high-power, and radially polarized fiber laser.
abstract: We demonstrate an ytterbium-doped fiber laser that emits high-power radially polarized light efficiently. In this study, a photonic crystal grating (PCG) was used as a polarization-selective output coupler, and the power of the radially polarized laser reached 2.42 W with a slope efficiency of 45.9% and a polarization purity of 96%. The results reveal that the inclusion of the PCG mirror into the fiber laser are particularly promising for generating high-power radially polarized light efficiently in view of its many important applications.
authors.affiliation: Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.
authors.forename: Di
authors.initials: D
authors.lastname: Lin
authors.forename: Kegui
authors.initials: K
authors.lastname: Xia
authors.forename: Jianlang
authors.initials: J
authors.lastname: Li
authors.forename: Ruxin
authors.initials: R
authors.lastname: Li
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Ueda
authors.forename: Guoqiang
authors.initials: G
authors.lastname: Li
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Li