The purpose of this book is to provide the reader with an introduction to lasers and their industrial applications. To facilitate this objective, such devices as photodetectors and modulators, which are frequently found in laser applications, are also covered. And to make the book as self-contained as possible, the concepts of basic optics that are pertinent to lasers and their applications are presented. Many engineering students do not cover this material formally in their course work; moreover, many working engineers and scientists either have not had training in optics or have been away from it for a long time and may need a refresher. Some laser theory is.
