Laser - Simulation only (No talk)

Simulating a working laser. We will learn how Lasers relies on Stimulated absorption, Spontaneous emission, and most importantly: Stimulated Emission- This last type interacts with an excited atom, causing it to relax / de-excite. It will send out a photon with the same phase, frequency, polarization and direction. We exploit this principle in a optical cavity, with the atom as a gain medium.

It turns out the pump will cause stimulated emission for the wrong excited state and we need to use a 3 level atom in order to obtain population inversion.

This is just the simulation. Everything is explained here:
   • Lasers Visually Explained