Optimisation of the optical scheme of a dual-beam thermal lens spectrometer using expert estimation

An expert estimation of the measurement results was applied to optimise the optical-scheme configuration of a dual-beam thermal lens spectrometer with a single-channel photodetector system to achieve the longest linear calibration range. A combination of experimental justification and the expert estimation provides an increase in the linear range of analytical procedures up to two to three times and enhances the repeatability compared to a non-optimised design.