基于阵列透镜和光纤集束的调频脉冲波形测试技术

张波1 彭志涛1 孙志红1 夏彦文1 卢宗贵1 董军1

(1.中国工程物理研究院激光聚变研究中心, 四川绵阳 621900)
【知识点链接】拉曼散射

【摘要】提出了一种基于阵列透镜和渐变多模光纤集束的调频脉冲测试方法,该方法通过渐变折射率多模光纤提供较大的接收孔径,通过子孔径拼接方式取样降低取样光斑在光纤端面的漂移,两者相结合可实现光束近场能量到光纤集束的高效稳定耦合。该方法中的渐变多模光纤集束可携带更多的取样光能量,有利于脉冲的高对比度测量。实验结果表明,本技术方案能够实现调频脉冲光束整体时间特性的保真测量,测量对比度可达630:1。

【关键词】 激光光学; 波形测量; 阵列透镜; 光纤集束; 耦合效率; 对比度;

【DOI】

【基金资助】 国家自然科学基金(61605185) 中国工程物理研究院激光聚变研究中心青年人才成长基金(RCFCZ-2017-12)

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This Article

ISSN:0258-7025

CN: 31-1339/TN

Vol 47, No. 03, Pages 42-48

March 2020

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Article Outline

知识点

摘要

  • 1 引 言
  • 2 测试技术与方法
  • 3 实 验
  • 4 结 论
  • 参考文献