Abstract
A high-power tandem-pumped -doped ZBLAN fiber laser is demonstrated. Using the free-running 1100-nm output from a diode-cladding-pumped -doped silica fiber laser as the pump source, a maximum output power of 2.5 W was generated at a slope efficiency of 29% after the threshold of was reached. Saturation of the output is avoided with codoping, which allows single-transition output. The center wavelength of the output was and the bandwidth at maximum power was .
© 2004 Optical Society of America
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