Fig. 6: Allan variance stability analysis of the QEMR-PAS system.
From: Quartz-enhanced multiheterodyne resonant photoacoustic spectroscopy

The red data point represents the Allan variance of the QEMR-PAS system when operating with pure N2
From: Quartz-enhanced multiheterodyne resonant photoacoustic spectroscopy

The red data point represents the Allan variance of the QEMR-PAS system when operating with pure N2