High-peak-power highly efficient combined Er/Er-Yb fiber amplifier

M. M. Khudyakov; D. S. Lipatov; A. N. Guryanov; M. M. Bubnov; M. E. Likhachev

doi:10.1117/12.2510177

7 March 2019 High-peak-power highly efficient combined Er/Er-Yb fiber amplifier

M. M. Khudyakov, D. S. Lipatov, A. N. Guryanov, M. M. Bubnov, M. E. Likhachev

Proceedings Volume 10897, Fiber Lasers XVI: Technology and Systems; 108971X (2019) https://doi.org/10.1117/12.2510177
Event: SPIE LASE, 2019, San Francisco, California, United States

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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Citation Download Citation

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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