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10 kHz two-color OH PLIF thermometry using a single burst-mode OPO

机译:10 kHz双色OH PLIF温度使用单个突发模式OPO

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摘要

10-kHz hydroxyl radical (OH) two-color planar laser-induced fluorescence (TC-PLIF) thermometry was demonstrated with a single burst-mode optical parametric oscillator (OPO) and a single camera. A fast, dual-wavelength switched seed laser enabled a high-energy, high-repetition-rate burst-mode laser to generate two 10-kHz pulse trains at wavelengths of similar to 354.8 nm. The two pulse trains are colinear with 3 mu s time interval between the pulse pairs. The injection-seeded OPO efficiently converts the burst-mode laser output to 285.62 and 285.67 nm to excite the Q(2)(12) and P-1(8) OH transitions. PLIF images were collected from each of the two excitation transitions, and intensity ratios from the images were used to determine local temperatures. The development of fast, dual-wavelength switching, burst-mode OPO technology significantly reduces the experimental complexity of the high-speed TC-PLIF thermometry and simplifies its implementation in harsh combustion and flow test facilities. (C) 2021 Optical Society of America
机译:用单脉冲模式光学参量振荡器(OPO)和单摄像机演示了10kHz羟基自由基(OH)双色平面激光诱导荧光(TC-PLIF)测温。一种快速、双波长开关种子激光器使高能、高重复率突发模式激光器能够产生两个波长类似于354.8 nm的10 kHz脉冲序列。两个脉冲串共线,脉冲对之间的时间间隔为3μs。注入种子OPO有效地将突发模式激光输出转换为285.62和285.67 nm,以激发Q(2)(12)和P-1(8)OH跃迁。从两次激发跃迁的每个跃迁中收集PLIF图像,并使用图像的强度比来确定局部温度。快速、双波长切换、突发模式OPO技术的发展显著降低了高速TC-PLIF测温仪的实验复杂性,并简化了其在严酷燃烧和流动测试设施中的实现。(2021)美国光学学会

著录项

  • 来源
    《Optics Letters》 |2021年第10期|共4页
  • 作者单位

    Spectral Energies LLC 4065 Execut Dr Beavercreek OH 45430 USA;

    Spectral Energies LLC 4065 Execut Dr Beavercreek OH 45430 USA;

    Spectral Energies LLC 4065 Execut Dr Beavercreek OH 45430 USA;

    Spectral Energies LLC 4065 Execut Dr Beavercreek OH 45430 USA;

    NASA Langley Res Ctr Adv Measurements &

    Data Syst Branch Hampton VA 26381 USA;

    Spectral Energies LLC 4065 Execut Dr Beavercreek OH 45430 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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