Narrow-linewidth, multi-Watt Yb-doped fiber amplifier at 1014.8 nm |
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| Authors: | Seifert Albert Sinther Mathias Walther Thomas Fry Edward S |
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| Affiliation: | Institute of Applied Physics, TU Darmstadt, Darmstadt, Germany. |
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| Abstract: | We report on an efficient, narrow linewidth, two-stage fiber amplifier at 1014.8 nm based on Yb-doped double-clad fibers. The fibers are cooled to liquid-nitrogen temperatures in order to suppress absorption at the operating wavelength. We achieved output powers of up to 5.0 W at a linewidth of less than 3 MHz by seeding the amplifier with the radiation from an external cavity diode laser. |
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