Abstract
With a tapered double-clad all-glass ytterbium fiber as a gain medium, a maximum output power of over at and a slope efficiency of over 70% were demonstrated. The tapered double-clad fiber concept allows for using low-brightness diode bars and results in cost-effective and efficient high-power fiber lasers. The adiabatic conical fiber gain waveguide combines improved pump absorption owing to enhanced mode mixing in the pump cladding, low-noise single fundamental mode operation with , and strong potential for significant power scaling.
© 2008 Optical Society of America
Full Article | PDF ArticleMore Like This
V. Filippov, Yu. Chamorovskii, J. Kerttula, K. Golant, M. Pessa, and O. G. Okhotnikov
Opt. Express 16(3) 1929-1944 (2008)
V. Filippov, Y. Chamorovskii, J. Kerttula, A. Kholodkov, and O. G. Okhotnikov
Opt. Express 17(3) 1203-1214 (2009)
Valery Filippov, Juho Kerttula, Yuri Chamorovskii, Konstantin Golant, and Oleg G. Okhotnikov
Opt. Express 18(12) 12499-12512 (2010)