基于量子级联激光器的挥发性化学物质光声光谱：应用于六甲基二硅氮烷
Quantum cascade laser-based photoacoustic spectroscopy of volatile chemicals: application to hexamethyldisilazane.
作者信息
Elia A, Rizzi F, Di Franco C, Lugarà P M, Scamarcio G
机构信息
INFM Regional Laboratory LIT(3), Dipartimento Interateneo di Fisica Michelangelo Merlin Via Amendola 173, I-70126 Bari, Italy.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2006 May 15;64(2):426-9. doi: 10.1016/j.saa.2005.07.041. Epub 2006 Jan 18.
The use of photoacoustic spectroscopy and mid-infrared quantum-cascade lasers (QCLs) for the detection of hexamethyldisilazane (HMDS) is reported. A detection limit of 200 parts in 10(9) is found using a Fabry-Perot QCL operated at 8.4 microm in pulsed mode and a photoacoustic cell equipped with four electret microphones. The laser multimode spectrum matches the range of the N-H bending absorption band of HMDS. Further improvements to reach lower detection limits are discussed.
报道了利用光声光谱法和中红外量子级联激光器（QCL）检测六甲基二硅氮烷（HMDS）。使用在8.4微米处以脉冲模式运行的法布里-珀罗QCL和配备四个驻极体麦克风的光声池，发现检测限为10⁹分之200。激光多模光谱与HMDS的N-H弯曲吸收带范围相匹配。讨论了为达到更低检测限的进一步改进措施。
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