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首页> 外文期刊>Applied optics >Modeling of Tm,Ho:YAG and Tm,Ho:YLF 2-μm lasers and calculation of extractable energies
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Modeling of Tm,Ho:YAG and Tm,Ho:YLF 2-μm lasers and calculation of extractable energies

机译：Tm，Ho：YAG和Tm，Ho：YLF2-μm激光器的建模和可提取能量的计算

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The development of a model for 2-μm laser operation in Tm,Ho:YAG and YLF crystals pumped in the near infrared is reported. This model, based on a simplified spectroscopic scheme, is fitted to a set of characterization experiments by means of three adjustable parameters. Results show that the excited. state populations are predicted with a relative accuracy of approximately 10% for a large range of pump levels. Using this model, we calculate the extractable energy on short-laser-pulse interactions for the two materials under different operation conditions. We study the sensitivity to pump duration and the optimization of dopant concentrations. We investigate the improvement of the extractable-energy efficiency with multiple-pulse operation. For double-pulse operation the improvement is approximately a factor of 1.5 and leads to overall extractable-energy efficiencies of 16% in YAG and 15% in YLF for an absorbed pump energy of 10 J cm↑(-3). # 1998 Optical Society of America OC1S codes: 140.3580, 160.5690, 010.3640, 140.0140.
机译：报告了在近红外泵浦的Tm，Ho：YAG和YLF晶体中2μm激光操作模型的开发。该模型基于简化的光谱方案，通过三个可调参数适合一组表征实验。结果表明兴奋。对于大范围的泵，预测的状态种群的相对精度约为10％。使用该模型，我们计算了两种材料在不同操作条件下在短激光-脉冲相互作用下的可提取能量。我们研究了对泵浦持续时间的敏感性以及掺杂剂浓度的优化。我们研究了多脉冲操作对可提取能量效率的提高。对于双脉冲运行，对于10 J cm↑（-3）的吸收泵浦能量，改善程度约为1.5倍，导致YAG的总可提取能量效率为16％，YLF的总可提取能量效率为15％。 ＃1998美国光学学会OC1S编码：140.3580、160.5690、010.3640、140.0140。

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