High-power fibre-laser-pumped Er:YAG laser with ‘top-hat’ output beam

机译：高功率光纤激光泵浦的Er：YAG激光器，输出光束为“礼帽式”

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Laser beams with a ‘top-hat’ transverse intensity distribution and a low M² parameter are desirable for many application areas where a uniform intensity distribution, small spot size and long depth of focus are needed. For example, in laser drilling and cutting the use of a top-hat beam profile can yield a significant improvement in edge quality compared to a standard Gaussian (TEM00) beam profile. Additionally, for a top-hat beam there is the advantage of improved extraction of stored energy from a laser medium and hence higher overall efficiency, especially for end-pumped configurations with a non-Gaussian pump beam.

机译：具有“顶帽”横向强度分布和低M ^{2 参数的激光束对于许多应用领域需要均匀强度分布，小点尺寸和长度焦深的重点。例如，与标准高斯（TEM 00 ）光束轮廓相比，在激光钻孔和切割使用顶帽梁轮廓的使用可以产生重复质量的显着改善。另外，对于顶帽梁，存在改善从激光介质的储能的提取的优点，因此更高的整体效率，特别是对于具有非高斯泵浦光束的端泵配置。}

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《2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference》|2011年|p.1|共1页
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Kim J. W.; Mackenzie J. I.; Hayes J. R.; Clarkson W. A.;
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中图分类激光技术、微波激射技术;基础理论;
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High-power fibre-laser-pumped Er:YAG laser with ‘top-hat’ output beam

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