This book is the first to give a detailed description of the factors and processes which govern the optical properties of ion implanted materials, as well as an overview of the variety of devices which can be produced in this way. Beginning with an overview of the basic physics and practical methods involved in ion implantation, the topics of optical absorption and luminescence are then discussed. A chapter on waveguide analysis then provides the background for a description of particular optical devices, such as waveguide lasers, mirrors, and novel non-linear materials. The book concludes with a survey of the exciting range of potential applications. Combining both theoretical and practical aspects of the subject, the book will be invaluable to graduate students, scientists and engineers in the fields of solid state physics, quantum electronics and materials science.