High-power and ultra-efficient operation of a cladding-pumped Tm-doped silica fiber laser with core composition optimized for efficient 'two-for-one' cross-relaxation is reported. The laser was pumped by three beam-shaped diode-bars at 790nm and produced 30.8 W of output at 2025 nm from a 2 m fiber for 58.5 W of launched pump power. The corresponding slope efficiency with respect to launched pump power was 61%.
© 2005 Optical Society of America
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3510) Lasers and laser optics : Lasers, fiber
D. Y. Shen, J. I. Mackenzie, J. K. Sahu, W. A. Clarkson, and S. D. Jackson, "High-Power and Ultra-Efficient Operation of a Tm3+-doped Silica Fiber Laser," in Advanced Solid-State Photonics (TOPS), C. Denman and I. Sorokina, eds., Vol. 98 of OSA Trends in Optics and Photonics (Optical Society of America, 2005), paper 516.
References are not available for this paper.