Cómo funcionan los láser (en teoría)

The video explains how a collection of atoms can be excited to emit light, leading to a chain reaction where photons stimulate others to emit more light. This process is enhanced by using mirrors to create a coherent light beam, known as a laser. Photons tend to align in the same state, which is why they emit light together. The video also discusses the unique behavior of photons compared to other particles, emphasizing their tendency to be in the same state and direction.

What new insight or understanding did you gain from this video?