A diode-laser-pumped neodymium-doped fiber laser is presented. For a launched pump power of 85 mW, the fiber laser had a cw output power of 43 mW, which is approximately an order of magnitude greater output power than any previously reported diode-pumped neodymium fiber laser operating on the<sup>4</sup><i>F</i><sub>3/2</sub>–<sup>4</sup><i>I</i><sub>9/2</sub> transition, which covers the 900–950-nm region. The fiber laser had a threshold power of 10 mW and a slope efficiency of 58% with respect to launched pump power. Tuning with a diffraction grating was obtained from 896 to 937 nm with narrow-band output powers as high as 32 mW. Emission was also obtained at 939.5 nm with use of a fiber Bragg grating as the output reflector.
© 1998 Optical Society of America
(010.3640) Atmospheric and oceanic optics : Lidar
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3530) Lasers and laser optics : Lasers, neodymium
Anthony L. Cook and Herbert D. Hendricks, "Diode-Laser-Pumped Tunable 896–939.5-nm Neodymium-Doped Fiber Laser with 43-mW Output Power," Appl. Opt. 37, 3276-3281 (1998)