The second edition of this successful textbook provides a clear, well-written introduction to both the fundamental principles of optics and the key aspects of photonics to show how the subject has developed in the last few decades, leading to many modern applications. The book thus provides a complete undergraduate course on optics in a single integrated text. The new edition has been completely updated and specific important changes include: * New material on modern optics and photonics. * A rearrangement of chapters to give a logical progression comprising groups of chapters on geometric optics, wave optics and photonics. * Many more worked examples and problems. In addition, substantial revisions have been made to chapters on holography, lasers and the interaction of light with matter. For this edition Smith and King have been joined by a new co-author, Professor Dan Wilkins from the University of Nebraska at Omaha, who has many years experience of teaching optics courses. This balanced, practical, modern introduction to optics and photonics and will prove invaluable to students taking optics courses within science and engineering.