Light, Lasers, Optics

The subject will derive the fundamentals of modern optics and apply them to optical systems. We will begin with a matrix approach to geometric ray optics and progress to Gaussian beams with particular emphasis on laser beams and optical resonators. We will review the polarization of light using Jones matrices and Mueller calculus. Interference concepts will be developed and applied to interferometers, thin films and Fabry-Perot cavities. These concepts will be used to explain lasers, from Einstein concepts and population inversion to laser gain and longitudinal mode structure, for three-level and four-level systems, and extended to cover laser dynamics, Q-switched and mode-locked systems, and femtosecond combs.