The Yttrium Aluminum Garnet (YAG) laser is a solid-state laser that uses a crystal made of yttrium aluminum garnet as its gain medium. It is commonly doped with neodymium (Nd:YAG) to produce a powerful beam of light. YAG lasers are known for their efficiency and ability to produce high-energy pulses, making them suitable for various applications, including industrial cutting, medical procedures, and cosmetic treatments. YAG lasers emit light in the near-infrared spectrum, typically at a wavelength of 1064 nanometers. This wavelength allows for deep tissue penetration, which is beneficial in medical applications like laser surgery and dentistry. Additionally, YAG lasers can be frequency-doubled to produce green light at 532 nanometers, expanding their versatility in different fields.