Sleepytime Facts
Drift through the quiet physics of lasers — the steady alignment of photons, the calm order of a single wavelength, and the soft focus of coherent light moving in step. Let these precise, gentle principles settle your mind and ease you toward sleep.
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Chapters
0:00 — The Basic Idea of a Laser
1:19 — What LASER Means
10:35 — Stimulated Emission
22:22 — Population Inversion
34:50 — Mirrors and the Optical Cavity
44:16 — Coherence and Ordinary Light
54:07 — Chemical Lasers
1:03:39 — Short-Wavelength Gain Media
1:14:49 — Final Thoughts on Lasers