He Yabai, Kan Ruifeng, Englich Florian V, Liu Wenqing, Orr Brian J
MQ Photonics Research Centre, Macquarie University, Sydney, NSW, Australia.
Opt Express. 2010 Sep 13;18(19):20059-71. doi: 10.1364/OE.18.020059.
The greenhouse-gas molecules CO(2), CH(4), and H(2)O are detected in air within a few ms by a novel cavity-ringdown laser-absorption spectroscopy technique using a rapidly swept optical cavity and multi-wavelength coherent radiation from a set of pre-tuned near-infrared diode lasers. The performance of various types of tunable diode laser, on which this technique depends, is evaluated. Our instrument is both sensitive and compact, as needed for reliable environmental monitoring with high absolute accuracy to detect trace concentrations of greenhouse gases in outdoor air.
利用快速扫描光学腔和一组预调谐近红外二极管激光器产生的多波长相干辐射，通过一种新型腔衰荡激光吸收光谱技术，可在几毫秒内检测空气中的温室气体分子二氧化碳（CO₂）、甲烷（CH₄）和水（H₂O）。对该技术所依赖的各种可调谐二极管激光器的性能进行了评估。我们的仪器既灵敏又紧凑，这是可靠地进行环境监测所必需的，能够以高绝对精度检测室外空气中痕量浓度的温室气体。
