Laser Systems: Theory and Modern Applications

This lecture covers various modules related to laser systems, including the basics of laser operation, different types of lasers, noise characteristics, optical fibers, ultrafast lasers, nonlinear frequency conversion, and laboratory visits. It delves into topics such as dispersion theory, gain, resonators, noise characteristics like linewidth and coherence, optical detection, and applications of lasers in modern technology. The lecture also discusses passive mode locking, optical frequency combs, pulse characterization, and nonlinear frequency conversion techniques like frequency doubling and optical parametric amplification. Additionally, it explores the relationship between linewidth and frequency noise in lasers, as well as their influence on the laser's performance.