The only introductory text to explain the underlying physics and engineering applicable to all lasers, Introduction to Laser Technology presents a unique combination of clarity and technical depth. The book features an introductory chapter explaining the characteristics and important applications of commercial lasers worldwide as well as discussions on light and optics, the fundamental elements of lasers, and laser modification. This fourth edition includes a new chapter on fiber lasers, a discussion of arrays in the semiconductor, and new end-of-chapter problems for technicians, laser-safety officers, and students.