"Frontiers of Laser Physics and Quantum Optics" is a specialized book that addresses significant developments in the fields of laser physics and quantum optics. Since the introduction of the laser about 40 years ago, these disciplines have evolved considerably. The book provides a comprehensive overview of early studies on optical coherence theory as well as semi-classical and quantum mechanical theories of lasers. It also highlights recent, fascinating effects predicted in modern research, such as the role of coherent atomic effects in lasing without inversion and electromagnetically induced transparency. The content is based on the lectures and discussions from the International Conference on Laser Physics and Quantum Optics held in 1999 in Shanghai, which was attended by scientists from over 13 countries. Contributions from renowned scientists, including Nobel laureates, make this book a valuable resource for professionals and students in these dynamic research fields.