Introduction to Photonic crystals. Photonic bandgap | Andrey Bogdanov

Lecture from the "Photonics" course by Andrey Bogdanov.

Сайт курса:
https://sites.google.com/view/photoni...

00:00 Intro
00:12 Photons in vacuum and in periodic crystals
01:20 Photonic crystal examples
02:53 Photonic crystals in nature
09:30 structured color
12:13 Photonic crystal examples
27:57 Definition of photonic crystals
30:34 T-matrix technique for multilayer structure
51:33 Periodic structure: T-matrix approach. Bloch theorem
1:10:00 Dispersion equations for propagating waves
1:17:07 Periodic functions graphics
1:27:00 Band gap dependance on ε1ε2 material difference
1:32:25 How to approximate a band gap and design photonic crystals
1:47:30 Bragg’s law and reflection coating
1:53:15 band gap and perfect reflection
1:56:44 Reflectance from Bragg mirror with finite thickness