"well written and up to date…. The problem sets at the end of each chapter reinforce and enhance the material presented, and may give students confidence in handling real-world problems." ― "rigorous but simple description of a difficult field keeps the reader’s attention throughout…. serves perfectly for an introductory-level course." ― This fully revised introduction enables the reader to understand and use the basic principles related to many phenomena in nonlinear optics and provides the mathematical tools necessary to solve application-relevant problems. The book is a pedagogical guide aimed at a diverse audience including engineers, physicists, and chemists who want a tiered approach to understanding nonlinear optics. The material is augmented by numerous problems, with many requiring the reader to perform real-world calculations for a range of fields, from optical communications to remote sensing and quantum information. Analytical solutions of equations are covered in detail and numerical approaches to solving problems are explained and demonstrated. The second edition expands the earlier treatment and includes: