O7 · Lasers
A 25-module path through o7 · lasers, in study order from foundations to the frontier.
Modules
- Population Inversion and Optical Gain
- Stimulated Emission and the Gain Coefficient
- Laser Rate Equations
- Threshold Condition
- Three-Level Laser Systems
- Four-Level Laser Systems
- Optical Resonators and Cavity Modes
- Longitudinal Modes and Free Spectral Range
- Transverse Cavity Modes (Hermite–Gaussian)
- Resonator Stability and the g-Parameter Diagram
- Cavity Q Factor and Photon Lifetime
- Gaussian Beams
- ABCD Matrix Beam Propagation
- Gain Saturation and Homogeneous Broadening
- Spatial Hole Burning and Mode Competition
- Q-Switching
- Mode-Locking
- Active and Passive Mode-Locking Mechanisms
- Relaxation Oscillations and Laser Turn-On Dynamics
- Laser Linewidth and the Schawlow–Townes Limit
- Gas Lasers
- Solid-State and Rare-Earth Lasers
- Semiconductor Diode Lasers
- Fiber Lasers
- Continuous-Wave versus Pulsed Operation