Abstract
We have demonstrated dual-wavelength continuous-wave oscillation at 3 and with a Ho-doped fluoride-glass fiber laser by use of a cascade oscillation scheme. We have shown that the fiber laser operates with a high slope efficiency of 52% (at 3 and ) with respect to the absorbed pump power. With a 6.5-m-long fiber we achieved an output power of 90 mW at each of the wavelengths that was limited only by the pump power, and the output power is to our knowledge higher than any previously reported level with -doped fiber lasers.
© 1998 Optical Society of America
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