Towards predictive system-level modelling of miniaturized photoacoustic gas sensors

We present a novel modeling approach that integrates the sub-models of the different physical domains of a PAS sensor. In this way, a connected system-level-model is created considering the optical power of the infrared source, the transmissivity of the optical filter, the absorption behavior of a target gas, and the sensitivity of the microphone used. Based on this model, the influence of the individual components on the overall system is determined in order to identify possible candidates as target gases for miniaturized PAS systems.