具有线性张角结构和非线性张角结构的锥形激光放大器的分析

曾德圣1,2 仲莉1 刘素平1 马骁宇1,2

(1.中国科学院半导体研究所光电子器件国家工程中心, 北京 100083)
(2.中国科学院大学, 北京 100049)

【摘要】利用分步傅里叶算法求解锥形半导体激光放大器中的稳态行波方程,对线性张角结构和非线性张角结构波导形状的激光放大器进行光学和热学性质的数值模拟。通过比较两种结构的激光放大器的输入电流-输出功率曲线,输入功率-输出功率曲线和光丝形成数量,研究放大器中光丝的形成机理,解释两种激光放大器中不同光场分布的原因。结果表明,非线性张角结构的放大器不仅能使增益分布和光场分布更契合,而且能减小波导边缘反射光和入射光的耦合,所以有着更高的光光转换效率和更稳定的模式输出。

【关键词】 激光技术; 锥形激光放大器; 分步傅里叶算法; 光学和热学性质; 光场模式; 光丝;

【DOI】

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This Article

ISSN:0253-2239

CN: 31-1252/O4

Vol 40, No. 03, Pages 94-100

February 2020

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Article Outline

摘要

  • 1 引 言
  • 2 模型描述
  • 3 仿真结果和分析
  • 4 结 论
  • 参考文献