Potassium titanyl phosphate (KTP) is a nonlinear optical crystal commonly used in laser applications. It has a chemical formula of KTP and is known for its ability to efficiently convert laser light from one wavelength to another, particularly in frequency doubling processes. This makes it valuable in various fields, including telecommunications and medical devices. KTP crystals are typically grown using the Czochralski process and can be cut into different shapes for specific applications. They exhibit good thermal stability and high damage thresholds, making them suitable for high-power laser systems. KTP is often used in Nd:YAG lasers to produce green light for laser pointers and other devices.