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首页> 外文期刊>Photonics Journal, IEEE >Numerical Modeling and Optimization of Mid-Infrared Fluoride Glass Raman Fiber Lasers Pumped by $hbox{Tm}^{3+}$-Doped Fiber Laser
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Numerical Modeling and Optimization of Mid-Infrared Fluoride Glass Raman Fiber Lasers Pumped by $hbox{Tm}^{3+}$-Doped Fiber Laser

机译：$ hbox {Tm} ^ {3 +} $掺杂光纤激光器泵浦的中红外氟化玻璃拉曼光纤激光器的数值建模和优化

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摘要

Numerical modeling of multiorder cascaded fluoride glass Raman fiber laser (RFL) employing fiber Bragg gratings (FBGs) is presented. Calculations were compared with the recently reported results, and good agreement was achieved. The model was also used to optimize a fourth-order fluoride glass RFL pumped at 1.9 $muhbox{m}$, which can generate a mid-infrared emission up to 3.36 $muhbox{m}$. The influences of launched pump power, fiber length, output coupling, fiber background loss, and insertion loss of FBG on laser performance were investigated. The fiber length of 53.1–85.5 m and reflectivity of output coupler of 0.34–0.51 were recommended to obtain a relative large output power. The calculated maximum output power of 2.96 W with slope efficiency of 19.2% and threshold of 24.7 W was obtained at launched pump power of 40 W. In addition, the strong effects of fiber background loss and insertion losses of FBGs on laser output performance emphasized the importance of development of high quality fiber and fluoride FBG writing technique.
机译：提出了使用光纤布拉格光栅（FBG）的多级级联氟化物玻璃拉曼光纤激光器（RFL）的数值模型。将计算结果与最近报告的结果进行了比较，并取得了良好的一致性。该模型还用于优化以1.9 $ muhbox {m} $泵浦的四阶氟化物玻璃RFL，它可以产生高达3.36 $ muhbox {m} $的中红外辐射。研究了泵浦功率，光纤长度，输出耦合，光纤本底损耗和FBG的插入损耗对激光器性能的影响。为了获得相对较大的输出功率，建议使用光纤长度为53.1-85.5 m，输出耦合器的反射率为0.34-0.51。在40 W的发射泵浦功率下，获得的最大输出功率为2.96 W，斜率效率为19.2％，阈值为24.7W。此外，光纤背景损耗和FBG的插入损耗对激光输出性能的强烈影响也强调了开发高质量的光纤和氟化物FBG写入技术的重要性。

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