Cradley Crystals: Single-crystals of YAG, LiNbO3, LiTaO3, KDP, DKDP, ZnSe, MgF2, and CaF2.Cristal Laser S.A.: Specializes in growth of nonlinear crystals.Keystone Crystal Corporation: Manufactures and fabricates high quality cadmium telluride, cadmium zinc telluride and related single crystal substrates.Maintech Sapphires: Specializes in high quality, semifinished and finished synthetic sapphires for optical lens applications and substrates for opto electronic LEDs.Photox Optical Systems: Supplier of MgF2, Ta2O5, and ZnS.PromLab: Manufacturer and supplier of ZnSe crystals.SHINKOSHA co., Ltd: Crystal growth and precision processing of oxide materials.Stratophase Ltd: Supplier of nonlinear optical materials including periodically poled lithium niobate (PPLN).Tecrys Ltd: Manufacturer of nonlinear optical materials: lithium triborate (LBO), beta barium borate (BBO), cesium lithium borate (CLBO) and potassium tytanil phosphate (KTP).U-Oplaz Technologies, Inc.: Authorized dealer for JDSU CASIX crystals.Vitron - Spezialwerkstoffe GmbH: Provider of optical materials and components for infrared and other different applications.