SPFCU46

UE Optical components

Unité d'enseignement (UE) de 3 crédits

^En UE enseignée en Anglais

DESCRIPTION
ORGANISATION
FORMATIONS

Contenu

The students from different backgrounds elaborate their knowledge on the physical principles of optoelectronic devices. Applications in sensing, lightning, nanotechnology, energy harvesting.

The teaching unit is composed of 3 completely independent parts: Optoelectronics, crystal based components, thin film optical coatings.

Part 1: Crystal based optical components
Anisotropic optics in biaxial crystal, finding the linearly polarized waves that can propagate in a given arbitrary direction (index and polarization direction) Applications is polarizers, waveplates, pockels cells and other optical components

Part 2: Semiconductor based optical components
- Electronic band theory of semi-conductors : mono-dimensional toy model, electronic band structure, effective mass : origin of holes, extension in 3D and application to common semi-conductors, transitions in direct and indirect bandgap semi-conductors
- Light Emitting Diodes : From the Electronic band structure to the space band diagram, Classical homojunction, heterojunction
- Devices : Structure of a LED, fabrication, extraction and light management, efficiencies, emission spectrum, applications

Part 3: Thin film optical coatings
– Thin film theory (propagation and interferences inside a multilayer structure; Calculation techniques for the reflectance and transmittance factors of a coating;
– Thin film design (classical multilayer stuctures used for dielectric mirrors, antireflection coatings, edge filters, bandpass filters);
– Manufacturing and characterization of thin film filters (theoretical elements and experimental demonstration).

Compétences à acquérir

The students know

how what represents an bandstructure and how it can be obtained
what is a direct / indirect bandgap materials
understand the applications of each
what an LED and a CMOS sensor are and how they are build
what the efficiency of a LED and a sensor is
how to determine the refractive index and the polarization of the linearly polarized eigenmodes propagating in a crystal
the different types of polarizers
how waveplates, electro-optic modulators (pockels cells), liquid-crystal light modulators, acousto-optic modulators work.
what happens inside a multilayer structure.
how to design a thin film stack to obtain a given reflectance or transmittance spectral profile.
how thin film filters are manufactured.

Langue(s) d'enseignement

Anglais

Bibliographie

Pierret, Advanced semiconductor fundamentals, 1987
Parker, Physics of optoelectronics, CRC Press, 2005
Chuang, Physics of optoelectronic devices, 1995

Prérequis obligatoires

Basic knowledge on electrodynamics and solid state physics

Modalités d'organisation

Final written examination consisting of several problems and knowledge/comprehension questions on the course content

Volume des enseignements

Cours magistraux: 32 heures
Volume total: 32 heures

Responsables pédagogiques:

WAGNER Frank
DEMESY Guillaume
LEMARQUIS Frederic
LEMARCHAND Fabien

Codes APOGÉE

SPFCU46J [ELP]