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Raman spectroscopy is a spectroscopic technique based on inelastic scattering of monochromatic light, usually from a laser source. Inelastic scattering means that the frequency of photons in monochromatic light changes upon interaction with a sample. Raman Spectrometer consists of three components – namely an excitation source (generally lasers), sampling apparatus (either a microscope or a fiber optic probe) and a detector. Raman Spectroscopy can be used for qualitative and quantitative purposes since the spectra is very specific, and chemical identification can be performed by using search algorithm, cleaner than mid-infrared spectra. Raman spectroscopy is an invaluable analytical tool for molecular finger printing as well as monitoring changes in molecular bond structure (e.g. state changes and stresses & strains).