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May 17, 2026Chinese Science Bulletin (Chinese Version)0 citationsOpen Access

A high-energy nanosecond burst-mode laser for industrial diagnostics

FYFeng YuanZFZhongwei FanJQJisi Qiu

Key Points

  • This research aims to develop a high-energy nanosecond burst-mode laser to enhance diagnostics in turbulent combustion environments.
  • Developed a 532 nm green laser outputting 100 pulses at 10 kHz in a 10 ms window.
  • Achieved a single pulse energy of 613 mJ with a pulse width of 30.7 ns.
  • Implemented an active envelope shaping method to mitigate envelope distortion caused by gain saturation.
  • Demonstrated key performance metrics including pulse consistency and energy output.
  • Provided reliable light source for high temporal resolution measurements in high-temperature, high-pressure applications.

Abstract

高温高压湍流燃烧装置中的超高帧频激光诊断(如 PIV/PLIF)对光源提出了“强辐射背景/强散射环境下的激发强度”与“kHz 级时间采样能力”并重的需求。受限于热负荷与工作模式,高重复频率激光器的单脉冲能量通常偏低,而传统焦耳级纳秒激光器重复频率又难以覆盖连续时间序列采样。为兼顾高能量与高采样率,研制了一套高能纳秒脉冲串绿光激光器,在 10 ms 时间窗内以 10 kHz 重复频率输出 100 发脉冲,获得单脉冲能量 613 mJ、脉冲宽度 30.7 ns 的 532 nm 激光输出。针对多级放大链路增益饱和与热-机耦合引发的包络畸变问题,提出种子预补偿的主动包络整形方法,并通过迭代优化使输出包络逼近平顶目标,提升脉冲串子脉冲能量一致性。本文给出关键性能测试与应用验证结果,为高温高压湍流燃烧过程的高时间分辨率测量提供了可靠的光源。

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Cite This Study

Yuan et al. (2026) studied this question.

synapsesocial.com/papers/6a095a877880e6d24efe0717https://doi.org/10.1360/csb-2026-0275
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