All-fiber eye-safe pulsed laser with Er-Yb Co-doped multi-stage amplifier |
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Authors: | B Peng H Zhang M Gong P Yan |
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Institution: | 1. Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing, 100084, China
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Abstract: | We report an all-fiber pulsed laser with multistage fiber amplifier which was suitable for high power eye-safe free space
optical communications. Tapered structure has been utilized between booster and final amplifiers, which could increase the
power coupling from the former fiber into the core of the latter fiber, and the beam quality of the output laser could be
improved simultaneously. A maximum output power over 6 W has been achieved from the master-oscillator-power-amplifier system.
With the multi-stage configuration and forward pumping, the optical signal to noise ratio was measured to be better than 50
dB. |
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Keywords: | |
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