Laser emission at 1.06 mu m, pump light absorption, laser threshold, s
lope efficiency, and alignment tolerance as a function of the fiber le
ngth have been measured for a cladding-pumped double-clad Nd:glass fib
er laser. The fiber laser was pumped with a laser diode emitting at 81
0 nm, It produced an output power of 15.9 mW at an absorbed pump power
of 55.1 mW. This corresponds to an optical-optical conversion efficie
ncy of 28.8%.