ELEMENTS OF SPECTROSCOPY
Learning outcomes of the course unit
give the theoretical basis to understand and analyze optical spectroscopy and Raman experiments
Course contents summary
Basics: Time dependent quantum mechanics and time dependent perturbation theory; Fermi golden rule.
Electromagnectic radiation. e.m. radiation - matter interaction hamiltonian: semiclassic approximation; Electric dipole approximation.
Electronic molecular spectroscopy: Applications of the Fermi golden rule: Absorption and emission of light. Franck-Condon approximation; Beyond Condon approximation; Selection rules. Beyond the elctric dipole approximation: Electric Quadrupole and magnetic dipole.
Vibrational spectroscopy: Harmonic approximation: normal modes of vibrations. IR activity and selection rules. Beyond the harmonic approximation: combination modes and overtones.
Raman spectroscopy: Rayleigh and Raman scattering. Albrecht theory of vibrational Raman intensity.
Two lab experiences:
1) Absorption and emission (fluorescence) spectra of push-pull organic dyes.
2) Raman spectra of push-pull organic dyes as a function of the exciting laser line (resonant behavior)
G.C.Schatz, M.A.Ratner, Quantum Mechanics in Chemistry, Dover (2002)
J.L.Mc Hale, Molecular Spectroscopy, Prentice Hall (1998)
Review papers easily available in the library