White Paper: KTN Laser Beam Scanner

KTN (KTa1-xNbxO3) is a transparent optical crystal composed of potassium, tantalum, niobium, and oxygen. The first KTN crystal was synthesized in the 1950's and is well known as a crystal with a very large quadratic electro-optic effect (Kerr effect), which determines device performance. Difficulty in the growth prevented its use for applications until NTT Photonics Laboratories succeeded in the growth of KTN crystal with a practical size in 2003.