Comparison of photoacoustic and wavelength modulation spectroscopy in a 3D-printed resonant gas cell
In this paper, we present a combined Photoacoustic Spectroscopy (PAS) and Wavelength Modulation Spectroscopy (WMS) set-up to compare both techniques in terms of detection limit, sensitivity and signal-to-noise ratio. The results of the experiments, that were carried out using a 3D-printed resonant gas cell and ammonia as target gas, show a slightly better performance for the Photoacoustic detection method.