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Short-range supercontinuum-based lidar for temperature profiling

机译:基于短程超强素的LIDAR,用于温度分析

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摘要

We developed a short-range light detection and ranging system using a supercontinuum (SC) source spectrally tailored to cover the ro-vibrational transition energies of desired components of a flue gas. The system enables remote measurements of the gas parameters, including temperature and concentration which play a key role in the performance of combustion power plants. The technique requires only one inspection window and, thus, can be used in combustion units with limited access. It exploits differential absorption between specific wavelength bands of the gas absorption spectrum. The transmittance of an individual wavelength band is derived from the detected backscattered temporal intensity of the SC pulses. We demonstrate water vapor temperature measurement in the range of 400 degrees C-900 degrees C in a laboratory furnace with the use of only two wavelength bands. Using more than two wavelength bands, the technique can be further extended to simultaneously measure temperature and concentration. By varying the direction of the incident beam in a non-parallel plane, a full 3D profile is also obtainable. (C) 2019 Optical Society of America
机译:我们使用SuperContinuum(SC)源频谱定制的短距离检测和测距系统,以覆盖烟道气的所需组分的RO振动过渡能量。该系统能够远程测量气体参数,包括在燃烧发电厂的性能方面发挥关键作用的温度和浓度。该技术仅需要一个检查窗口,因此,可以用于具有有限的燃烧单元。它利用气体吸收光谱的特定波长带之间的差分吸收。各个波长带的透射率来自SC脉冲的检测到的反向散射时间强度。我们在实验室炉中展示了400摄氏度的水蒸气温度测量,仅使用两个波长带。使用两个以上的波长带,可以进一步扩展该技术以同时测量温度和浓度。通过在非平行平面中改变入射光束的方向,也可以获得完整的3D轮廓。 (c)2019年光学学会

著录项

  • 来源
    《Optics Letters》 |2019年第17期|共4页
  • 作者单位

    Tampere Univ Phys Unit Photon Lab POB 692 FI-33101 Tampere Finland;

    Tampere Univ Phys Unit Photon Lab POB 692 FI-33101 Tampere Finland;

    Tampere Univ Phys Unit Photon Lab POB 692 FI-33101 Tampere Finland;

    Tampere Univ Phys Unit Photon Lab POB 692 FI-33101 Tampere Finland;

    Tampere Univ Phys Unit Photon Lab POB 692 FI-33101 Tampere Finland;

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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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