Photoacoustic spectroscopy for gas sensing
Basics, theory, experimental systems, and applications
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Date
2021
Publication Type
Book Chapter
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yes
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Abstract
This subchapter starts with a brief history of the photoacoustic (PA) effect which dates back to 1880, followed by a discussion of its theoretical foundations with emphasis on gas sensing. The experimental part includes a presentation of the most important laser sources – preferentially in the mid-infrared for higher detection sensitivitiy – as well as design considerations for PA cells. Various examples of laser-PA systems illustrate the high perfomance characteristics of PA spectroscopy (PAS) in trace gas sensing including multi-component analyses. Applications range from laboratory studies, roadside gas sensing to air-borne measurements and include most recent developments such as 3D printed PA cells, quartz-enhanced (QEPAS), cantilever-enhanced (CEPAS) and intracavity photoacoustic sensing as well as frequency comb PA spectroscopy.
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published
Book title
Advances in Spectroscopic Monitoring of the Atmosphere
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Pages / Article No.
226 - 269
Publisher
Elsevier
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Organisational unit
02510 - Institut für Quantenelektronik / Institute for Quantum Electronics
Notes
Subchapter 5.1
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