Absorption spectroscopy in sooting flames using a tunable diode laser.
Absorption spectroscopy in sooting flames using a tunable diode laser.
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使用可调谐二极管激光器在烟灰火焰中进行吸收光谱。
DOI：
10.1364/ao.19.000482
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发表时间：
1980
期刊：
影响因子：
1.9
通讯作者：
R. Hanson
中科院分区：
文献类型：
--
作者：
R. Hanson
半导体激光器作为窄线宽照射光源，其波长可以快速调谐，以执行快速高分辨率吸收光谱。激光束通过层流预混乙炔-空气火焰的充满烟尘的火焰后区域，并且波长在气体成分的吸收线的整个宽度上进行调谐，在这种情况下，CO。激光波长的调制提供了一种简单的方法来区分颗粒的连续消光效应。单次测量的结果是一条或多条CO吸收线的完全分辨轮廓的基础，从该轮廓可以推断CO浓度、温度或吸收线的碰撞半宽。对于某些应用，该技术的主要限制是它是视线测量。可调谐半导体激光光谱学具有灵敏度高、操作简单、光谱分辨率高等优点。1位数。
The diode laser serves as a source of narrow-linewidth irradiation whose wavelength can be rapidly tuned to perform fast high-resoltuion absorption spectroscopy. The laser beam is passed through the soot-laden post-flame region of a laminar premixed acetylene-air flame, and the wavelength is tuned across the full width of an absorption line of a gaseous component, in this instance, CO. The modulation of laser wavelength provides a simple means of discrimination against the continuum extinction effects of particulates. The result of a single measurement is the basis for a fully resolved profile of one or more CO absorption lines from which may be inferred the CO concentration, the temperature, or the collision halfwidth of the absorption line. The primary limitation of the technique, for some applications, is that it is a line-of-sight measurement. The advantages of tunable diode laser spectroscopy include its sensitivity, simplicity, and high spectral resolution. 1 figure.