A Raman spectrometer is a scientific instrument that is used to measure the Raman scattering of light. Raman spectroscopy is a non-destructive analytical technique used to study vibrational, rotational, and other low-frequency modes in a system. The technique relies on the inelastic scattering of monochromatic light, usually from a laser in the visible, near-infrared, or ultraviolet range. The scattered photons have a different wavelength than the incident photons, which can be measured using a spectrometer. Raman spectroscopy is used in a wide range of applications, including material science, chemistry, biology, and physics. A Raman spectrometer typically consists of a laser, a spectrometer, a microscope, and a detector.