Undoped Yttrium Aluminium Garnet (Y3Al5O12 or YAG) is a new substrate and optical material that can be used for both UV and IR optics. It is particularly useful for high-temperature and high-energy applications. The mechanical and chemical stability of YAG is similar to that of Sapphire. Advantages of Undoped YAG: • High thermal conductivity, 10 times better than glasses • Extremely hard and durable • Non-birefringence • Stable mechanical and chemical properties • High bulk damage threshold • High index of refraction, facilitating low aberration lens design Features: • Transmission in 0.25-5.0 mm, no absorption in 2-3 mm • High thermal conductivity • High index of refraction and Non-birefringence