Gain and Absorption: Many-Body Effects -- Fabry-Perot Lasers: Temperature and Many-Body Effects -- Fabry-Perot Lasers: Thermodynamics-Based Modeling -- Distributed Feedback Lasers: Quasi-3D Static and Dynamic Model -- Multisection Lasers: Longitudinal Modes and their Dynamics -- Wavelength Tunable Lasers: Time-Domain Model for SG-DBR Lasers -- Monolithic Mode-Locked Semiconductor Lasers -- Vert…