The relationship between the diffraction grating, the wavenumber range, and the spectral resolution, and the change in Raman spectrum and Raman image due to the slit width will be explained together with the measured data. Configure gratings Concept of measurement wavenumber range and spectral resolution As with other analysis methods, Raman spectroscopy also needs to be set up according to the purpose of measurement. The spectrometer settings introduced here are the key points of the detection system. In general Raman spectroscopy, the range in which the Raman spectrum is detected is several tens to 4000 cm -1. The figure below is the Raman spectrum of ethanol. As shown in the…