Lasers and Optoelectronics
Quantum Theory of Atomic Energy Levels – Radiative and Nonradiative decay of excited state atoms –Emission Broadening and linewidth – Radiation and Thermal equilibrium – Conditions for laser action –Laser Oscillation above threshold - Laser Amplifiers – Requirements for obtaining population inversion –Rate Equations for three and four level systems – Laser pumping requirements – Laser Cavity modes –Stable resonators – Gaussian beams- Special Laser Cavities – Q-switching and Mode locking –Generation of ultra fast Optical pulses- Pulse compression