A diode-laser-pumped neodymium-doped fiber laser is presented. For a l
aunched pump power of 85 mm, the fiber laser had a cw output power of
43 mW, which is approximately an order of magnitude greater output pow
er than any previously reported diode-pumped neodymium fiber laser ope
rating on the F-4(3/2)-I-4(9/2) transition, which covers the 900-950-n
m region. The fiber laser had a threshold power of 10 mW and a slope e
fficiency of 58% with respect to launched pump power. Tuning with a di
ffraction grating was obtained from 896 to 937 nm with narrow-band out
put powers as high as 32 mW. Emission was also obtained at 939.5 nm wi
th use of a fiber Bragg grating as the output reflector. (C) 1998 Opti
cal Society of America.