Molecular Laser Spectroscopy as a Tool for Gas Analysis Applications
Figure 3
(a) Data from the reference channel, without CO2 absorption (dashed line) and the sample channel (full line) featuring CO2 absorption, respectively. (b) Etalon transmission signal seen by detector 1 with the etalon ( cm−1) placed in the reference beam path. (c) and (d) Data transferred to the wave number domain. (c) Etalon transmittance curve. (d) Data of the lower panel of (a), converted to absorbance values (solid dots). A Voigt profile has been fitted to the data (full line) representing the CO2-R(12) line at 4987.31 cm−1. (e) The residuals from the fitted line in (d). (f) Generalized linear regression of versus .
