Demonstrated Wavelength Portability of Raman Reference Data for Explosives and Chemical Detection

Figure 3

Response of the 1064 nm FT-Raman system before and after correcting for the spectrometer intensity response function using the NIST 2244 standard plotted as a function of Raman shift. The x-axis represents 5897 to 9327 cm⁻¹ absolute wavenumbers, with the intensity correction factor generated by the standard plotted as the dashed green line. The “raw” spectrum is plotted in black as the lower trace, the corrected spectrum in red as the upper trace. These spectra are arbitrarily scaled 0 to 1 on the ordinate and have been vertically offset for clarity.