The Origins of Raman Spectroscopy

Raman spectroscopy is a powerful analytical technique used to identify and characterize materials based on how they scatter light.¹ When a monochromatic laser beam hits a sample, most of the light scatters elastically.¹ This process is known as Rayleigh scattering. However, a very small fraction scatters inelastically, which causes a shift in energy because of the interactions that take place with the sample’s molecular vibrations.¹ This shift is known as the Raman effect, first discovered by Indian physicist C. V. Raman in 1928.^2,3

Born in Tiruchirappalli, India, Raman studied at A.V.N. College and later Presidency College in Madras, earning a scholarship at 13 and graduating with top honors and gold medals by 15. He completed his M.A. at 18 with the highest distinction.² Even before finishing his degree, Raman published his first research paper in Philosophical Magazine (1906), signaling his extraordinary scientific talent and future impact as a pioneering physicist.²

Ultimately, Raman’s work on light scattering provided essential empirical evidence for quantum theory. By identifying how light changes frequency when interacting with molecules, Raman established a foundational method for exploring molecular vibrations and structural symmetry.^2,3 His landmark research earned him the 1930 Nobel Prize in Physics, paving the way for modern vibrational spectroscopy used today in fields like chemistry and medicine. Beyond his technical discoveries, Raman also contributed immensely to scientific education. During his career, he played a key role in building some of India’s premier research institutions, such as the Raman Research Institute in Bangalore.³

Raman’s work building the founding the technique permeates to today, as Raman spectroscopy is now widely used in various industries. Some of the application areas that use Raman spectroscopy include chemistry, materials science, pharmaceuticals, forensics, and even art conservation. Raman spectroscopy is useful in these fields because the technique is non-destructive and it requires little to no sample preparation.¹

References

1. Horiba, What is Raman Spectroscopy? Horiba. Available at: https://www.horiba.com/int/scientific/technologies/raman-imaging-and-spectroscopy/raman-spectroscopy/ (accessed 2026-03-02).
2. Workman, Jr., J. A New Radiation: C.V. Raman and the Dawn of Quantum Spectroscopy, Part I. Spectroscopy 2025, 40 (4), 30–33. DOI: 10.56530/spectroscopy.yo1483v7
3. Workman, Jr., J. A New Radiation: C.V. Raman and the Dawn of Quantum Spectroscopy, Part II. Spectroscopy 2025, 40 (5), 50–57. DOI: 10.56530/spectroscopy.ys2983I4