Enhancing static modulated Fourier-transform spectrometer performance through a stepped mirror structure and optimized analysis algorithm

value of 0.95, when compared to a monochromator reference, a 0.20 improvement over the 14 mm mirror displacement results. Regarding the signal-to-noise ratio, the values are 5.67 and 2.07 for the 1 mm and 14 mm mirror displacements, respectively, while the proposed approach achieved a signal-to-noise ratio of 15.47. This methodology demonstrates the potential of static modulated Fourier transform spectrometer for high performance applications in low signal-to-noise conditions, such as Raman scattering detection and remote-sensing.