Undoped YAG Laser Crystal

Undoped YAG Laser Crystal is an excellent material for UV-IR optical windows, particularly for high temperature and high energy density application. It's different from Nd:YAG Crystal.

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.

Advantages of Undoped YAG: 

High thermal conductivity, 10 times better than glasses; 

Extremely hard and durable; 

Non-birefringence; 

Stable mechanical and chemical properties; 

High bulk damage threshold; 

High index of refraction, facilitating low aberration lens design. 

Features of Undoped YAG: 

Transmission in 0.25-5.0 mm, no absorption in 2-3 mm; 

High thermal conductivity; 

High index of refraction and Non-birefringence. 

Basic properties of Undoped YAG: 

Density 4.5g/cm3; 

Transmission Range 250-5000nm; 

Melting Point 1970°C; 

Specific Heat 0.59 W.s/g/K; 

Thermal Conductivity 14 W/m/K; 

Thermal Shock Resistance 790 W/m; 

Thermal Expansion 6.9x10-6/K; dn/dt, at 633nm 7.3x10-6/K-1; 

Mohs Hardness 8.5; 

Refractive Index 1.8245 at 0.8mm, 1.8197 at 1.0mm, 1.8121 at 1.4mm.

You can customise U to your nndoped YAG needs. 

If you do not find suitable specifications for your application please contact us for custom solution.

Coupletech also provide other kinds of laser crystals such as : Yb:YAG Crystals, Nd:YVO4 Crystals, Cr:YAG Crystals and Diffusion Bonded Crystals.