Section 3: Modern Laser Theory

As explained in the previous section, the existence of spontaneous emission of photons from excited atoms lays the foundation for the operation of a laser. Fortunately, most times that is all that you need to know, and you can carry on with your merry life being blissfully ignorant of the esoteric world of quantum mechanics. However, I would be neglecting my sworn duty as Optics Girl to not explain further about the origin of spontaneous emission as the interaction of dipoles with vacuum field fluctuations. Thus, after starting with some catching up, we will begin our shallow dive into the world of quantum mechanics!

Table of Contents:

  1. Basic Principles of Quantum Mechanics
  2. Time-Dependent Perturbation Theory
  3. Stimulated Atomic Transitions
  4. Connection between QM and CEO Model
  5. Quantization of Free-Space EM Fields
  6. QM Derivation of SPE and STE Rates
  7. Density of Spatial Modes in the Radiation Field
  8. Model of the Hydrogen Atom
  9. QM Theory of Polarization Properties of Atomic Transitions
  10. Material Responses
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