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Raman spectroscopy uses scattering of laser light to probe molecular structure. Of every million photons scattered, a single photon will interact with the vibrational states of a sample molecule and emit light of a different wavelength.
Although Raman spectra are low in intensity, Raman systems can be configured to explore molecular structure as effectively as IR spectroscopy. These setups are easier to use, more versatile, and less expensive. Raman spectral signatures can be used in fundamental research, or matched to a known database for instant identification and quantification of materials.
Generation of a Raman spectrum begins with an excitation laser, routed to the sample via a Raman probe. Scattered Raman light is collected by the probe and measured by a spectrometer with the sensitivity and Raman shift range suitable for your application. Complete the system with a sample holder that accepts cuvettes, probes or SERS substrates.