超高斯抽运模型对固体激光器性能的改善  

Improvement of Solid State Laser Performance by Super Gaussian Pumping Model

作　　者：张勋 王垚廷[1] ZHANG Xun;WANG Yaoting(School of Science,Xi'an Technology University,Xi'an Shaanxi 710021)

机构地区：[1]西安工业大学理学院,陕西西安710021

出　　处：《河南科技》2020年第23期78-81,共4页Henan Science and Technology

摘　　要：本文在激光二极管端面泵浦1342 nm四能级固体激光器的设计中选用泵浦光超高斯抽运模型,考虑能量传输上转化和激发态吸收效应,通过优化能级速率方程,推导出自发辐射过程、能量传输上转换过程、激发态吸收过程、受激发射过程与抽运过程的粒子比率表达式。其间选取不同的超高斯阶数,计算泵浦功率与各过程粒子比率和输出功率的关系。结果显示,当m=2时,最大输出功率为4.02 W。最终得出,超高斯抽运模型相比于高斯抽运模型能够改善固体激光器的性能,这一结果对以后固体激光器的设计优化具有重要意义。In the design of diode end pumped 1342 nm four-level solid-state laser,the super Gaussian pump model of pump light was selected,and the conversion effect and excited state absorption effect on energy transmission were considered in this paper,the particle ratio expressions of spontaneous emission,energy transfer upconversion pro⁃cess,excited state absorption process,stimulated emission process and pumping process are derived by optimizing the energy level rate equation.In the meantime,the relationship between the pump input power and the particle ratio of each process and the output power is calculated by selecting different super Gaussian order.The results show that the maximum output power is 4.02 W when m=2,compared with the Gaussian pumping model,the super Gaussian pumping model can improve the performance of solid-state lasers,this result is of great significance to the design and optimization of solid-state lasers in the future.

关 键 词：固体激光器 超高斯模型 能量传输上转换 激发态吸收 

分 类 号：TN248.1[电子电信—物理电子学]