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1444nm Nd:YAG激光输出效率的理论分析 被引量：1

Theoretical Analysis of Output Efficiency of Nd:YAG Laser at 1 444 nm
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摘要 从激光晶体能级结构出发,利用速率方程,分析了Nd:YAG激光系统的放大自发辐射(Amplified Spontaneous Emission,ASE)和激发态吸收(Excited State Absorption,ESA)对激光输出的影响。介绍了输出耦合及抽运和热效应对1 444 nm激光输出的影响。在反射率为0．80～0．95之间,输出耦合对输出效率影响不明显。 Based on the energy level diagram, the rate equations indicate that ASE and ESA eliminate the population of upper energy level, make slope efficiency of 1 444 nm lasers lower and reduce gain. The output power of 1 444 nm lasers can increased through cooling. When the reflectivity of output mirror varies from 0.80 to 0.95, the output coupling has no great effect on output efficiency.
作者 刘丰满 李正佳 周海 刘珍峰
机构地区 华中科技大学激光加工研究中心
出处 《光学与光电技术》 2006年第4期29-31,共3页 Optics & Optoelectronic Technology
关键词 放大自发辐射 激发态吸收 速率方程 输出效率 ASE ESA rate equations output efficiency
分类号 TN241 [电子电信—物理电子学]
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共引文献3

同被引文献6

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光学与光电技术
2006年 第4期

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