SPFCU44

UE Modern lasers and laser-matter interaction

Unité d'enseignement (UE) de 3 crédits

^En UE enseignée en Anglais

DESCRIPTION
ORGANISATION
FORMATIONS

Contenu

Part 1: Modern laser sources
- Nanosecond lasers and thermal problems in lasers (rate equations; spiking; q-switching; MOPA architecture; q-switch devices; injection seeding; beam quality of Gauss. Beams; peak fluence measurement; thermal lenses in lasers: rod laser, slab laser, thin disc laser, fiber laser)
- Ultrashort lasers (Definitions and timescales, Building a femtosecond oscillator, Amplifying a femtosecond pulse, Measuring a femtosecond pulse)

Part 2: Ultrafast laser-matter interaction
Interests of ultrashort pulses (intense and short), Mechanisms of interaction (from energy absorption to ablation), Ultrafast measurements (pump-probe), Optical breakdown, low-density plasma and microexplosion applications - Lab work

Part 3: Laser-matter interaction from ns to ms regime
A long pulse laser as heat source; thermal diffusion; heat affected zone;

Part 4: Some applications of laser-matter interaction
laser cutting; reactive cutting, drilling, welding; Laser damage measurements and models; "fatigue" effect; fusion class lasers.

Compétences à acquérir

Learn the physics and practical aspects of today’s lasers and their application in material science.

Langue(s) d'enseignement

Anglais

Prérequis obligatoires

Basic knowledge on lasers and solid state physics

Modalités d'organisation

This course is a classical lecture with some excercises.

Volume des enseignements

Cours magistraux: 32 heures
Volume total: 32 heures

Responsables pédagogiques:

SANNER Nicolas
WAGNER Frank
ILIOPOULOS Konstantinos

Codes APOGÉE

SPFCU44J [ELP]