"Version: 20220801"--Title page verso.Includes bibliographical references.part I. Basics of photonics and lasers. 1. The photon and photonics -- 1.1. The photon -- 1.2. Branches of photonics -- 1.3. Maxwell's equations and their connection to optics -- 1.4. A few topics related to lasers and optics -- 1.5. Comparison of an electronic circuit and a photonic circuit -- 1.6. Nobel prizes related t…