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Stimulated emission

Photon hits excited electron, makes that electron go down, and generates a new identical photon in the process, with the exact same:

This is the basis of lasers.

Bibliography:

youtu.be/_JOchLyNO_w?t=517 from Video "How Lasers Work by Scientized (2017)"

Table of contents 77 2
- History of stimulated emission Stimulated emission 45 1
  - On the Quantum Theory of Radiation (Zur Quantentheorie der Strahlung) History of stimulated emission

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Laser