title: Generation of radially polarized mode in Yb fiber laser by using a dual conical prism.
abstract: For the first time to our knowledge, a radially polarized beam is generated in an Yb-doped multimode double-clad fiber laser by using an intracavity dual conical prism. Up to 6.2 mW of output power is obtained from a 2 m long gain fiber with 7.4% slope efficiency. This research opens a new window to obtaining a radially polarized beam directly from an active fiber.
authors.affiliation: Institute for Laser Science, University of Electro-Communications, Tokyo, Japan. j_li@ils.uec.ac.jp
authors.forename: Jian-Lang
authors.initials: JL
authors.lastname: Li
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Ueda
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Musha
authors.forename: Akira
authors.initials: A
authors.lastname: Shirakawa
authors.forename: Lan-Xiang
authors.initials: LX
authors.lastname: Zhong