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physics.ins-det2022★ 17 cited
Sensitive multi-species photoacoustic gas detection based on mid-infrared supercontinuum source and miniature multipass cell
Tommi Mikkonen, Tuomas Hieta, Goëry Genty +1
We report multipass broadband photoacoustic spectroscopy of trace gases in the mid-infrared. The measurement principle of the sensor relies on supercontinuum-based Fourier transfor…
physics.ins-det2022★ 6 cited
Enhancement of photoacoustic spectroscopy with sorption enrichment for ppt-level benzene detection
Juho Karhu, Tuomas Hieta
A real time trace gas detector for benzene is demonstrated. The measurement system takes an advantage of modest enrichment through short adsorption periods to reach a ppt-level det…