A part of the course consists of lessons. There are a number of experimental activities in laboratorium in order to illustrate the main concepts of spectroscopy.
Light/matter interaction: microscopic approach . Dipole approximation, selection rules, line intensity and line shape. Natural broadening and lifetime of a quantum level, emission; collisional and Doppler broadening.
Macroscopical approach. Complex dielectric constant and index of refraction. Kramers-Krönig relation dispersion. Lorenz and Drude models.
Absorption spectroscopy and measurements, essential elements for an absorption set-up. Different sources of e.m. radiation. Dispersive devices, radiation sources and detectors. Spectrophotometers. Signal to Noise ratio. Sources of noise. Software methods for increasing S/N. Ellissometry: Time resolved spectroscopy
Experimental section: Ellipsometry, Original Young experiments, Observation of light fluctuations, Absorption and emission measurements, Photon Counting and light statistics of different sources, Raman spectra
The main goal is the knowledge of the spectroscopic analysis of materials, mostly by optical and electron spectroscopy.
KNOWLEDGE AND UNDERSTANDING:
knowledge of more relevant spectroscopic techniques and related set-up for practical analysis
APPLYING KNOWLEDGE AND UNDERSTANDING:
Understanding of the results coming from the different techniques and of the meaning of the results in connection with materials characterization.
Saper autonomamente giudicare quali tecniche sono necessarie o più adatte per la individuazione di particolari proprietà dei materiali
Have the awardness on which technique is more appropriate or necerrary in orer to single out a specific propertiy of a material
The student has to master the main common and specialistic words and expressions used in the experimental techniques and mut be able to communicate with proper language.
The student must be able to go further in the knowledge and understanding of analogue techniques in the field of spectroscopy.