"Version: 20210205"--Title page verso.Includes bibliographical references.1. Review of electromagnetic radiation -- 1.1. Historical introduction -- 1.2. Maxwell's equations in free space -- 1.3. The free-space wave equation -- 1.4. Phase and group velocity -- 1.5. Energy flux -- 1.6. Resonator electric field -- 1.7. Problems2. Polarization of light -- 2.1. Historical introduction -- 2.2. Polariā¦