Femtosecond lasers have been considered as a promising tool for micro/nano-scale patterning of various materials. This book describes the fundamental concepts of lasers, laser processing technologies, recent advances in forming a variety of micro/nano-metric structures in glasses & metals and their potential application areas. A comparative study among various material processing technologies have been discussed: lithographic technologies, vapor deposition technologies, and laser processing technologies. The fundamental concepts of femtosecond laser-material interactions are also discussed....