Introduction to Raman Spectroscopy

Raman spectroscopy has become an important analytical and research tool. It can be used for applications as wide ranging as pharmaceuticals, forensic science, polymers, thin films, semiconductors and even for the analysis of fullerene structures and carbon nano-materials.

Raman spectroscopy is a light scattering technique, and can be thought of in its simplest form as a process where a photon of light interacts with a sample to produce scattered radiation of different wavelengths.

Raman spectroscopy is extremely information rich, (useful for chemical identification, characterization of molecular structures, effects of bonding, environment and stress on a sample).

Historically, the technique of Raman spectroscopy was not that widely taught within university courses, even though the scattering process itself was established as far back as 1928 by Professor C.V Raman. FTIR, UV-VIS, and NMR etc. were generally more commonplace. In the mid 1990's, the next generation of smaller, more compact instruments started to evolve. They utilized newer lasers, optics and detectors and began the micro Raman revolution.