High-power fiber-coupled pump modules with an emission wavelength of 980 nm and output powers in excess of 200 mW, as measured at the fiber end, have been fabricated. Laser-to-fiber coupling efficiencies in excess of 77% are observed to be in excellent agreement with a mathematical model. Also, the output power stability of these modules has been monitored during severe temperature cycling, and the relative power variation was less than 4% for all the tested modules.
© 1999 Optical Society of America
(140.2020) Lasers and laser optics : Diode lasers
(140.5960) Lasers and laser optics : Semiconductor lasers
(230.5590) Optical devices : Quantum-well, -wire and -dot devices
(230.6080) Optical devices : Sources
Martin Achtenhagen, Mark McElhinney, Steve Nolan, and Amos Hardy, "High-Power 980-nm Pump Laser Modules for Erbium-Doped Fiber Amplifiers," Appl. Opt. 38, 5765-5767 (1999)