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We demonstrate a $\hbox{Ho}^{3+}$, $\hbox{Pr}^{3+} $ co-doped fluoride fiber laser that produces an output power of 7.2 W, a 150-nm tuning range, and a narrow linewidth of $<\ 0.14$ nm using a power-scalable $\hbox{Yb}^{3+} $ fiber-laser-pumped 1150-nm Raman fiber laser as the excitation source. The maximum output power is achieved at a slope efficiency of 29%, with wavelength tuning between...
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