Nonlinear crystals with Type II phase matching are essential for applications such as laser frequency conversion and optical parametric oscillation. These crystals offer precise specifications like a surface quality of 10-5 scratch-dig and flatness up to lambda/10, ensuring high performance in demanding optical setups. Suppliers such as CRYSTECH Inc. and Lasertec Inc. provide a diverse range of these crystals to meet various technical requirements. On FindLight, you can compare detailed specifications, request pricing, and connect directly with manufacturers without needing to register.