通过控制拉锥后的末端光纤尺寸，实现了多模光束输入转换成单模光束输出。
By controlling the taper end size of the fiber, the unique tapered fiber can convert a multi-mode beam into a single-mode one.
输出的光束质量较好，为准单模输出。该光纤放大器输出脉冲能量高，具有全光纤化、结构简单的特点。
A near diffraction limited beam was produced from the amplifier with quasi-single mode output... the results shows that the high pulse energy fiber laser has advantage of simple all fiber structure.
通过这种谐振腔设计的单横模激光器能使介质充分利用，使单模运转体积增大，并有很好的光束质量。
The laser device with this style could make the single model volume turn over the full entire medium and the quality of the light beam very good.
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