6: Emission and Absorption of Photons
- Page ID
- 17208
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- 6.1: Transitions Between Stationary States
- We casually claim that quantum states "drop" to a lower energy state when they emit a photon. But why would a quantum state change at all if it is in a "stationary" state?
- 6.2: Selection Rules and Transition Times
- While perturbations act to trigger transitions between states, not all perturbations are created equal.
- 6.3: Lasers
- We take a brief look at the inner workings of what is now a ubiquitous technology.