太瓦飞秒脉冲激光峰值功率测量装置及测量不确定度分析
Peak power measurement device of terawatt femtosecond pulsed laser and measurement uncertainty analysis
朱光毅 1金尚忠 1吴磊 2薛媛元 2莫云龙 2尤越 2张云龙 2俞兵 2杨鸿儒 2董再天 2卢飞2
作者信息
- 1. 中国计量大学 光学与电子科技学院,浙江 杭州 310018
- 2. 西安应用光学研究所,陕西 西安 710065
- 折叠
摘要
超短超强脉冲激光(飞秒强激光)具有极高的峰值功率,在激光惯性约束聚变、高能物理、激光微加工等领域具有广阔的应用前景.飞秒脉冲激光峰值功率是评价超短超强脉冲激光系统性能的重要参数.介绍了基于光谱相位相干直接电场重构法的太瓦量级飞秒脉冲激光峰值功率测量方法、测量装置组成和工作原理,搭建了一套太瓦量级的飞秒脉冲激光峰值功率测量装置,分析和讨论了影响太瓦激光峰值功率测量结果的测量不确定度分量来源和主要因素.测量峰值功率的重复性为 2.9%,测量不确定度达到 17.6%(k=2),有效解决了太瓦量级飞秒激光峰值功率测量问题.
Abstract
Ultra-short and ultra-intense pulsed lasers(femtosecond lasers)possess extremely high peak power,and hold broad application prospects in laser inertial confinement fusion,high-energy physics,laser micro-processing and other fields.The peak power of femtosecond pulsed lasers is a crucial parameter for evaluating the performance of ultra-short and ultra-intense pulsed laser systems.A peak power measurement method of terawatt-level femtosecond pulsed laser based on the spectral phase coherent direct electric field reconstruction was introduced,along with the composition and working principles of the measurement device.A set of peak power measurement device of terawatt-level femtosecond pulsed laser was constructed,and the sources as well as main factors of measurement uncertainty influencing the measurement results of peak power were analyzed and discussed.The repeatability of the peak power measurement is 2.9%,and the measurement uncertainty reaches 17.6%(k=2),which effectively addresses the issue of peak power measurement of terawatt-level femtosecond laser.
关键词
飞秒激光/脉冲宽度/脉冲波形/峰值功率/测量不确定度Key words
femtosecond laser/pulse width/pulse waveform/peak power/measurement uncertainty引用本文复制引用
基金项目
科工局技术基础科研项目(JSJL2019208C002)
出版年
2024
NETL
NSTL
万方数据