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Modeling of the Co2+ saturable absorber Q-switch for the Er:Yb:glass laser (1.534 um)

机译:用于Er:Yb:玻璃激光器(1.534 um)的Co2 +饱和吸收剂Q开关的建模

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Abstract: We have modeled the passive Q-switch performance of divalent cobalt and its spectroscopic parameters in various host media for the Er:Yb:Glass laser that operates near 1.534 $mu@m. Our method involves the use of rate equations that assume a three-level gain medium and a four-level absorber medium including excited-state absorption. Numerical integration techniques are used where analytical functions are unobtainable to describe the dynamics within the systems that we have examined. Input into the rate equations is obtained from experimental data that include Co$+2$PLU$/ ion concentrations, cross-sections, and lifetimes obtained by time-resolved spectroscopy. The calculated laser output in terms of pulse energies and pulsewidths in ns is compared with experimental results based on different Co$+2$PLU$/ absorber host matricies and different cavity designs. !13
机译:摘要:我们在工作于1.534μm@ m的Er:Yb:Glass激光器的各种宿主介质中,对二价钴的被动Q开关性能及其光谱参数进行了建模。我们的方法涉及速率方程的使用,这些方程假定包含激发态吸收的三级增益介质和四级吸收剂介质。在无法获得分析功能的情况下,使用数字积分技术来描述我们所检查的系统内的动力学。速率方程的输入是从实验数据获得的,其中包括Co $ + 2 $ PLU $ /离子浓度,横截面和通过时间分辨光谱法获得的寿命。根据不同的Co $ + 2 $ PLU $ /吸收体基质和不同的腔体设计,将计算得出的激光输出(以脉冲能量和脉冲宽度(ns)为单位)与实验结果进行比较。 !13

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