Fabry-Perot Interferometer: Principles and Applications

This lecture covers the principles and applications of the Fabry-Perot interferometer, focusing on practical aspects such as resolution, reflectivity, and alignment using dielectric mirrors. It explains the formation of narrow transmission peaks, the use of cavity scans, and the analysis of line widths in lasers and quantum dots. The lecture also delves into the matrix approach for multi-layer interference, the transformation between transfer and diffusion matrices, and the design of dielectric mirrors for high reflectivity. Additionally, it discusses the modes of waveguides, including the conditions for guided modes, dispersion, and multimodal fields.