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首页> 外文期刊>Optics Letters >Hybrid fs/ps vibrational coherent anti-Stokes Raman scattering for simultaneous gas-phase N-2/O-2/CO2 measurements
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Hybrid fs/ps vibrational coherent anti-Stokes Raman scattering for simultaneous gas-phase N-2/O-2/CO2 measurements

机译：混合动力机FS / PS振动相干抗Stokes拉曼散射同时气相N-2 / O-2 / CO2测量

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摘要

Single-shot, 1-kHz measurements of temperatures and mole fraction ratios along with theoretical modeling for gas-phase N-2, O-2, and CO2 are demonstrated using hybrid femtosecond/picosecond (fs/ps) vibrational coherent anti-Stokes Raman scattering (CARS). The combination of broadband pump and Stokes pulses covers a spectral range over 1800 cm(-1) while the narrowband probe pulses generated from a quasi-common-path second harmonic bandwidth compressor (QCP-SHBC) resolves the molecular structures with a bandwidth of similar to 7 cm(-1). Temperature results of 1700-2000 K in methane/air fuel-lean flames show state-of-the-art inaccuracies of less than similar to 3% and precision less than 2%. Mole fraction ratios inaccuracy at room temperature is similar to 5%, and precision at flame temperatures are 6%-8%. (C) 2021 Optical Society of America
机译：使用飞秒/皮秒（fs/ps）混合振动相干反斯托克斯拉曼散射（CARS）演示了温度和摩尔分数比的单次1kHz测量以及气相N-2、O-2和CO2的理论建模。宽带泵浦和斯托克斯脉冲的组合覆盖了超过1800厘米（-1）的光谱范围，而准公共路径二次谐波带宽压缩器（QCP-SHBC）产生的窄带探测脉冲解析了带宽类似于7厘米（-1）的分子结构。甲烷/空气燃料贫乏火焰中1700-2000 K的温度结果显示，最先进的误差小于3%，精度小于2%。室温下的摩尔分数比精度接近5%，火焰温度下的精度为6%-8%。（2021）美国光学学会

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  • 来源
    《Optics Letters》 |2021年第7期|共4页
  • 作者

    Zhao Huijie; Tian Ziyang; Li Yan; Wei Haoyun;

  • 作者单位

    Tsinghua Univ Dept Precis Instrument State Key Lab Precis Measurement Technol &

    Instru Beijing 100084 Peoples R China;

    Tsinghua Univ Dept Precis Instrument State Key Lab Precis Measurement Technol &

    Instru Beijing 100084 Peoples R China;

    Tsinghua Univ Dept Precis Instrument State Key Lab Precis Measurement Technol &

    Instru Beijing 100084 Peoples R China;

    Tsinghua Univ Dept Precis Instrument State Key Lab Precis Measurement Technol &

    Instru Beijing 100084 Peoples R China;

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