FOCtek Photonics,Inc.---Optical Crystals ------>> Undoped YAG Crystal(Y 3 AI 5 O 12 ),Optics,Lens,Penta Prism,Right Angle Prism,Mirror Crystals,Nd:YAG,Nd:YVO4,Ti:Sapphire,BBO,KTP,YVO4 Polarization Optics,Polarizer,Waveplate,PBS Micro Optics,C-Lens,LN Wedge,YVO4 Wedge,YVO4 Beam Displacer,Micro Prism,Micro PBS,Micro Waveplate,FOCtek Undoped YAG Crystal is an excellent material for UV-IR optical windows, particularly for high temperature and high energy density online_orderings, The mechanical and chemical stability is comparable to sapphire crystal, but YAG is unique with non-birefringence and available with higher optical homogeneity and surface quality. Up to 3'' YAG boule grown by CZ method, as-cut blocks, windows and mirrors are available from FOCtek. Main Features: 1) Transmission in 0.25-5.0 m m, no absorption in 2-3 m m. 2) Extremely hard and durable. 3) High thermal conductivity. 4) High bulk damage threshold. 5) High index of refraction and Non-birefringence.