Pulsed Laser Photoacoustic Spectroscopy of Gases: Trace Gas Detection and Multiphoton Absorption Studies
Laser photoacoustic spectroscopy in the midd-infrared spectral region is a powerful spectroscopic technique usable both for highly sensitive trace gas detection (linear regime) and for the study of multiphoton absorption (nonlinear regime). For the latter, high peak power pulsed laser excitation is typically used. The experimental technique is applicable both for atmospheric trace gas monitoring (linear absorption), and for the study of processes leading to the generation of advanced materials (multiphoton spectroscopy).
KeywordsPhotoacoustic Signal Multiphoton Absorption Photoacoustic Cell Photoacoustic Spectrometer Laser Photoacoustic Spectroscopy
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