Raman Spectroscopy | Sciencetech Inc.

Raman Spectroscopy

Raman spectroscopy and infrared spectroscopy are the two primary techniques to determine the vibrational modes of molecules. To a large extent, these are complementary, in that they measure two distinctly different physical phenomena:

Infrared spectroscopy involves the measurement of absorption of light corresponding to transitions between the molecular energy levels of the vibration modes of molecules.

In Raman spectroscopy, a monochromatic visible light beam is scattered by the molecules. This scattered light is measured with a suitable spectrometer, usually at 90 degrees to the incident beam. A change in the scattered frequency with respect to the source is related to the vibrational frequencies of molecules.

At most, the intensities of Raman lines are 0.0001% of the source. Lasers are the standard sources.

Sciencetech offers Raman systems built using our modular components. The backbone of a Raman system will be a high-resolution monochromator, such as the model 9040 monochromator. For more information on our options, see Sciencetech’s high-resolution monochromators page.

A standard Raman spectroscopy system is comprised of these general components:

Standard Series Monochromator Configuration

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