Abstract
We describe a high-power Er3+-doped fiber laser pumped with an Ar2+ laser that produces 56 ± 2 and 96 ± 5 mW of power at room and liquid-nitrogen temperatures, respectively. Slope efficiencies of 10 ± 1% and 14 ± 1% with corresponding thresholds of 44 ± 4 and 6.8 ± 0.6 mW are obtained at high and low temperatures. An intracavity étalon composed of the output mirror and the fiber end face restricted the output linewidth to 620 ± 60 MHz.
© 1989 Optical Society of America
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