Resonance Raman Scattering with Tunable Lasers

Abstract

Raman scattering has had a long and very fruitful development since the announcements in 1928 by Sir C. V. Raman [1] of theobservation of this inelastic light scattering in several liquids and by L. Mandelstam 121 of similar scattering in crystalline quartz. Most of the early work was performed with high intensity mercury lamps using especially the lines at 4358, 4046, and 2536 Å. The development of the continuous wave helium-neon laser in 1962 and the more power- ful argon-ion laser shortly thereafter quickly led to a renewed vigor in the field. With Porto's work in 1964 using the He[sbnd]Ne laser [3] and his contributions toward refinements of the double spectrometer [4], many workers began renewed studies of a great variety of materials - solids, liquids, and gases. These studies have extended the classification of the frequencies and symmetries of the normal modes of vibrations in molecules and crystals and of rotational and vibrational lines in molecular gases.