The alignment of laser beam to fiber end face and degradation of beam quality can increase the coupling losses. This paper analyzes their effects to the coupling efficiency.
激光与光纤的机械对准误差和光束质量下降导致了耦合损失，本文分析了它们对耦合效率的影响。
Numerical simulation and experimental results show that the output beam quality can be improved taking a convex face as the output end of a fiber laser.
结果表明，采取凸端面作为光纤激光器的输出端可以提高输出激光的光束质量。
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