IR/Raman Spectroscopy

IR spectrometry deals with the vibrational spectra of organic and inorganic substances. Within molecules, the atoms or groups of atoms involved in bonds undergo vibrations whose resonance frequencies lie in the infrared region of the spectrum (between 760 nm and 5 mm). The vibrational spectra resulting from excitation with IR radiation can be used for the quantitative and qualitative analysis of mixtures of substances as well as for structural characterization.

As a vibrational spectroscopic method, Raman spectroscopy provides spectra of chemical substances that are similarly detailed to those obtained by infrared spectroscopy. Unlike an IR spectrometer, however, a Raman spectrometer records this information in the visible spectral range, thereby circumventing the specific challenges of infrared measurement. 

Lasers with wavelengths of 1064 nm and 532 nm are available as excitation sources.