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YouTubeImprobable Matter
How Lasers Work
Simplified explanation of laser physics principles: atomic energy levels, spontaneous and stimulated emission, gain, three- and four-level schemes. Also explained are various types of laser: ruby, Neodymium, Helium-Neon, Semiconductor/Diode, Capillary Discharge and Free Electron Lasers. Contents 00:00 - Introduction 02:04 - Atomic processes 04: ...
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