ID:

510153

Durata (ore):

###### 94

CFU:

9

SSD:

###### FISICA DELLA MATERIA

Anno:

2023

## Dati Generali

## Periodo di attività

Secondo Semestre (04/03/2024 - 18/06/2024)

## Syllabus

## Obiettivi Formativi

## Prerequisiti

## Metodi didattici

Practical class (hours/year in lecture theatre): 24

Laboratory: 22

## Verifica Apprendimento

## Testi

W. Koechner. Solid.State Laser Engineering (6th Edition). Springer.

G. New. Introduction to Nonlinear Optics. Cambridge University Press, 2011.

R.W. Boyd. Nonlinear Optics. Academic Press, London, 2003.

A. Yariv. Quantum Electronics. Wiley, New York, 1989.

## Contenuti

Time Independent Perturbation Theory

Time Dependent Potentials, Perturbative method

Electric Dipole interaction Fermi Golden Rule

Absorption, Spontaneous and Stimulated Emission, Einstein’s A and B coefficients

3- and 4-levels systems, rate equations

Optical resonators

Free running laser operation

Q-Switching and Mode-Locking regimes

Some representative example of lasers (Gas lasers, Solid-state lasers, Fiber Lasers, Semiconductor Lasers)

NONLINEAR OPTICS

Second-order nonlinear phenomena

Nonlinear propagation in the paraxial approximation. Phase-matching conditions. Second harmonic generation. Parametric amplification and oscillation. Wavelength conversion of ultrashort pulses: spectral acceptance, temporal walk-off. Materials for nonlinear optics. Phase-matching techniques.

Third-order nonlinear phenomena

Third harmonic generation. Optical Kerr effect, self focusing, self phase modulation. Four-wave mixing: wavelength conversion, optical phase conjugation.

Ultrashort pulses

Relation between pulsewidth and spectral bandwidth. Nonlinear propagation of ultrashort pulses in optical fibers. Temporal solitons. Measurement of pulsewidth via correlations.

Spontaneous and stimulated light scattering

Rayleigh scattering. Raman and Brillouin scattering. Doppler velocimetry. LIDAR techniques for environmental monitoring. Stimulated Raman and Brillouin scattering. Raman amplifiers and oscillators. CARS technique.

## Lingua Insegnamento

INGLESE

## Altre informazioni

Please visit the web-page of the course on KIRO platform for further informations about the course

## Corsi

## Corsi

##### ELECTRONIC ENGINEERING

Laurea Magistrale

2 anni

No Results Found

## Persone

## Persone (2)

No Results Found