title: Neodymium-doped phosphate fiber lasers with an all-solid microstructured inner cladding.
abstract: We report on high-power fiber lasers based on index-guiding, all-solid neodymium-doped (Nd-doped) phosphate photonic crystal fiber (PCF) with a hexagonal-shaped inner cladding. The optimum fiber laser with a 36 cm length active fiber, generated up to 7.92 W output power at 1053 nm, which benefited from a high absorption coefficient for pump power due to its noncircular inner cladding. The guiding properties of the all-solid PCF were also investigated. A stable mode with a donut-shaped profile and a power-dependent laser beam quality have been observed experimentally and analyzed.
authors: Key Laboratory of High Power Laser Materials, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. maxzw2008@163.com
authors: Guang
authors: G
authors: Zhang
authors: Qinling
authors: Q
authors: Zhou
authors: Chunlei
authors: C
authors: Yu
authors: Lili
authors: L
authors: Hu
authors: Danping
authors: D
authors: Chen