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7 March 2019 High-peak-power highly efficient combined Er/Er-Yb fiber amplifier
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Abstract
Novel configuration of combined Er/Er-Yb fiber amplifier is proposed to join advantages of both approaches (high gain and high efficiency). Co-propagating pump at 976 nm and signal at 1556 nm were coupled into a short piece of Er-doped fiber, where signal was amplified to a few Watts level. Then signal together with unabsorbed pump passed to LMA Er- Yb fiber. In this configuration, 2 ns pulses were amplified to 20 W of average power and 37 kW of peak power (limited by four-wave mixing). Differential efficiency reaches 37%, which is a record for fiber lasers with this peak power level.
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© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. M. Khudyakov, D. S. Lipatov, A. N. Guryanov, M. M. Bubnov, and M. E. Likhachev "High-peak-power highly efficient combined Er/Er-Yb fiber amplifier", Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 108971X (7 March 2019); https://doi.org/10.1117/12.2510177
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