Raman spectroscopy is an analytical tool that permits measurement of the molecular structure and identification of materials based on the rotational and vibrational modes of a molecule. Most commercial laboratory Raman systems cover the fingerprint spectral region ranging from 200–3400 cm^-1.

The B&W Tek i-Raman Plus BAC102 probe can access lower-frequency modes down to 65 cm^-1, providing a cost-effective solution for fuller range measurements. Access to lower-frequency regions provides key information for applications in protein characterization [1], polymorph detection and identification [2], along with material phase and structure determination.