Amplitude and Phase Modulation

This lecture covers the basics of laser operation, including dispersion theory, gain and resonators, different types of lasers, noise characteristics, optical fibers, ultrafast lasers, and nonlinear frequency conversion. It also delves into amplitude modulation, explaining the theory, frequency doubling, and optical parametric amplification. The content progresses to phase modulation, discussing the principle of phase modulators, phase noise, and sideband picture. The lecture concludes with a detailed exploration of detectors, focusing on phototubes, photodiodes, and photomultiplier tubes, as well as the photoelectric effect and photoconductive detectors.