Mann B A, White R F, Morrison R J
Appl Opt. 1996 Jan 20;35(3):475-81. doi: 10.1364/AO.35.000475.
The spectroscopic techniques of degenerate four-wave mixing (DFWM) and laser-induced fluorescence (LIP) have been applied to the detection of minor species for combustion diagnostics. We compare the results obtained when these techniques are used to detect NO(2). Previous results show that DFWM signals increase for NO(2) when buffer gas is added and that LIP signals are greatly reduced under the same circumstances. We make direct quantitative comparisons of these two techniques and discuss their suitability for making measurements of NO(2) in combustion environments.
简并四波混频（DFWM）和激光诱导荧光（LIP）光谱技术已应用于燃烧诊断中痕量物质的检测。我们比较了使用这些技术检测二氧化氮（NO₂）时所获得的结果。先前的结果表明，添加缓冲气体时，DFWM信号对NO₂增强，而在相同情况下LIP信号则大幅降低。我们对这两种技术进行了直接定量比较，并讨论了它们在燃烧环境中测量NO₂的适用性。
