Lundqvist Stefan, Kluczynski Pawel, Weih Robert, von Edlinger Michael, Nähle Lars, Fischer Marc, Bauer Adam, Höfling Sven, Koeth Johannes
Airoptic Sp. z o.o., Janiny Omańkowskiej 58, 60–465 Poznań, Poland.
Appl Opt. 2012 Sep 1;51(25):6009-13. doi: 10.1364/AO.51.006009.
We have demonstrated sensing of formaldehyde (H(2)CO) using a room-temperature distributed feedback interband cascade laser (ICL) emitting around 3493 nm. The ICL has been characterized and proved to be very suitable for tunable laser spectroscopy (TLS). The H(2)CO TLS spectra were recorded in direct absorption mode and showed excellent agreement with the Pacific Northwest National Laboratory database. The measurements reported here were taken from a series of measurements of a mixture of H(2)CO in air obtained by vaporizing a solution also containing methanol and formic acid. We obtained a resolution limit better than 1 ppm × m assuming a relative absorption of 10(-3).
我们已经展示了使用发射波长约为3493 nm的室温分布反馈带间级联激光器（ICL）对甲醛（H₂CO）进行传感。该ICL已得到表征，并被证明非常适合可调谐激光光谱学（TLS）。H₂CO的TLS光谱以直接吸收模式记录，并与太平洋西北国家实验室数据库显示出极佳的一致性。此处报告的测量结果取自一系列对空气中H₂CO混合物的测量，该混合物是通过汽化一种还含有甲醇和甲酸的溶液获得的。假设相对吸收率为10⁻³，我们获得了优于1 ppm × m的分辨率极限。
