Abstract
The YAG laser plays a major role in surgery and medicine, owing not only to it's variety of wavelengths, but also to practical aspects, such as size, portability, cost, delivery system and high reliability. The YAG laser will expand its share in the major market of surgery, opht-halmology and dentistry based on it's specific properties such as contact surgery, pulse mode. Ho: YAG, Er: YAG, SHG, FHG or optical tuning. If the optical feedback parameters from tissue are combined with the medical YAG laser, highly advanced laser surgery and medicine will be achieved with great ease.
