Mobile laser spectrometer with novel resonant multipass photoacoustic cell for trace-gas sensing

By M. Nägele, M. Sigrist. 2000

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Aircraft Instrument for Comprehensive Characterization of Aerosol Optical Properties, Part 2: Black and Brown Carbon Absorption and Absorption Enhancement Measured with Photo Acoustic Spectroscopy (2012, methodology): “Arnott et al. (1999) and Nägele and Sigrist (2000) provide comprehensive descriptions of the PAS technique which the reader is referred to for further details.”
Mid-Infrared Laser Applications in Spectroscopy (2003, background): “In its application to laser spectroscopy, the laser beam impinges on a selected target gas in a specially designed cell [174,175,176,177,178,179,180,181,182,183].”
Aerosol Absorption Measurement using Photoacoustic Spectroscopy: Sensitivity, Calibration, and Uncertainty Developments (2006, background): “It takes aspects of the designs of Miklos et al. (2001), Kramer et al. (2001) and Nagele and Sigrist (2000).”
Recent Progress on Infrared Photoacoustic Spectroscopy Techniques (2011, background): “For example, a resonant PA cell is integrated into a Herriott multipass arrangement with 36 passes (extendable to up to 78 passes), resulting in an optical path length of 24 m (118).”