MIR photoacoustic trace gas sensing using a miniaturized 3D printed gas cell

Bauer, Ralf and Wilson, David and Johnstone, Walter and Lengden, Michael (2015) MIR photoacoustic trace gas sensing using a miniaturized 3D printed gas cell. In: Advanced Photonics 2015, OSA Technical Digest. Optical Society of America. ISBN 978-1-55752-000-5

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Abstract

A miniaturized 3D printed photoacoustic trace gas sensor is presented, using a mid-infrared QCL at 5.26µm as excitation source. Its performance for sensing CH4 resulted in a normalized noise equivalent absorbance of 7.7·10-9cm-1WHz-½.