LEDs provide an advantage that no continuum
source, choppers or combination thereof can match. Indeed,
amplitude stability of pulsed LEDs tends to be better
than that of corresponding laser diodes. Concerning the
implemented chamber, the choice fell on a single stepbased
resonant cell, even if, in some features, this kind of
cell has the advantage of having a volume greater than of
a non-resonant one, and this limits its use for small and
compact systems for on-site monitoring of gaseous species