Abstract
The measurement of trace gases has increasingly become a key technique in healthcare and other medical applications. Quartz-enhanced photoacoustic spectroscopy (QEPAS) is a suitable method that can provide the required characteristics in such applications for a comparatively low cost and small size. The quantitative detection and a low detection limit are also required by applications. In this paper, we present new results on sensing biomedically relevant gases using the on-beam QEPAS technique with some newly developed tunable high-power single-mode laser diodes based on GaSb material. The data processing and detection limit determination are done by a field programmable gate array device, as well as an automatic measurement of the resonance frequency.
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
Tobias Milde, Morten Hoppe, Herve Tatenguem, Hanna Rohling, Sebastian Schmidtmann, Martin Honsberg, Wolfgang Schade, and Joachim Sacher
Appl. Opt. 60(15) C55-C59 (2021)
Tobias Milde, Morten Hoppe, Herve Tatenguem, Christian Assmann, Wolfgang Schade, and Joachim Sacher
Appl. Opt. 58(10) C84-C91 (2019)
Ying He, Yufei Ma, Yao Tong, Xin Yu, and Frank K. Tittel
Opt. Express 26(8) 9666-9675 (2018)