Lecture 7: Principles of Lasers

This video is part of a series from Laser-Tec that introduces learners to geometrical optics. This video highlights the principles of lasers. Viewers learn about the distinction between spontaneous and stimulated radiation, energy level diagrams, the mechanism of coherent light generation, the conditions required for gain in a laser, and the function of various components of a laser. Continuous and pulse modes, Bohr's Model of an Atom, absorption, emission, photons, and the Law of Thermodynamics are also explored. The video recording runs 33:35 minutes in length.