This book offers the fundamentals and the latest research topics in laser materials processing, such as welded tailor blanks, femtosecond lasers, disk lasers, laser applications in medical and nanomanufacturing, sensors for process monitoring, and signal processing for process monitoring. Chapters are clearly arranged with introductions, summaries, and problem sets, making the book an excellent choice for advanced undergraduate and graduate engineering courses. It is also appropriate for research and development personnel, practicing engineers, and technicians.