"Version: 20250701"--Title page verso.Includes bibliographical references.1. Introduction -- part I. Classical theory of light. 2. Electromagnetic field and light-matter interaction -- 2.1. Maxwell's equations, wave equation, and the Helmholtz equation -- 2.2. The propagator for the Helmholtz equation -- 2.3. Helmholtz equation in cylindrical coordinates : Bessel beams -- 2.4. Paraxial approxim…