Erbium–ytterbium co-doped fiber amplifier operating at 1550 nm with stimulated lasing at 1064 nm |
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Authors: | Grzegorz Sobon Pawel Kaczmarek Krzysztof M Abramski |
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Institution: | 1. University of Arizona, Tucson, AZ 85721-0104, United States;2. nLight, Vancouver, WA 98665, United States;3. Sandia National Laboratories, Livermore, CA 94551, United States |
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Abstract: | A new method of controlling the amplified spontaneous emission (ASE) from Yb3 + ions in Er3 +/Yb3 + co-doped fiber amplifiers is presented. The 1 μm ASE is suppressed by stimulating a laser emission at 1064 nm in a fiber amplifier, due to a positive feedback for the 1 μm signal. The results are compared to a conventional amplifier setup without any ASE control. We have shown, that applying a feedback loop in an Er3 +/Yb3 + co-doped fiber amplifier allows higher power scaling and provides operation without unwanted parasitic lasing effects, increasing the stability and robustness of the amplifier. |
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