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In this work, we provide proof-of-concept experimental realization of pulse multiplexing and beam combining of four pulsed Yb-doped fiber lasers by noncollinear frequency up-conversion in an LBO crystal. An overall conversion efficiency of 51% and up to 29 W average power in a combined 532 nm beam were achieved. These results correspond to an improvement by a factor of 2 compared to the average power extracted from a single fiber amplifier.
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Želudevičius et al. (2017) studied this question.
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