Nonlinear Optics is an important branch of modern optics that studiesthe interaction of intense laser light with matter. It has broad applicationsin optical harmonic generations and wave mixing, ultrafast optical switching, opticalcommunications, nonlinear and transient optical spectroscopies, and ultrafast controlof quantum phases of matter. By combining textbook materials and cutting-edgeresearch studies, this course aims to introduce the fundamental concepts and principlesof nonlinear optics, and their scientific and engineering applications. Studentsare expected to understand basic nonlinear optical processes and their applications;graduate students are required to master the corresponding mechanisms and relatedderivations.