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.
© 2012 Optical Society of AmericaFull Article | PDF Article
J. Limpert, T. Schreiber, S. Nolte, H. Zellmer, A. Tünnermann, R. Iliew, F. Lederer, J. Broeng, G. Vienne, A. Petersson, and C. Jakobsen
Opt. Express 11(7) 818-823 (2003)
L. Li, A. Schülzgen, V. L. Temyanko, T. Qiu, M. M. Morrell, Q. Wang, A. Mafi, J. V. Moloney, and N. Peyghambarian
Opt. Lett. 30(10) 1141-1143 (2005)
Tino Eidam, Steffen Hädrich, Florian Jansen, Fabian Stutzki, Jan Rothhardt, Henning Carstens, Cesar Jauregui, Jens Limpert, and Andreas Tünnermann
Opt. Express 19(9) 8656-8661 (2011)