Undoped YAG transparent ceramic is an excellent material for UV-IR optical windows, particularly for high temperature and high energy density. The mechanical and chemical stability is comparable to sapphire crystal, but YAG transparent ceramic is unique with non-birefringence and available with higher optical homogeneity.
Parameter
| Crystal Structure | Cubic |
| Density | 4.5g/cm3 |
| Transmission Range | 0.25-5.0μm |
| Melting Point | 1970℃ |
| Mohs Hardness | 8.5 |
| Thermal Conductivity | 14W/m/K |
| Heat Expansion Coefficient | 6.9×10-6/℃ |
| Specific Heat | 0.59W.s/g/K |
| Flexural Strength | 200Mpa |
| Refractive Index | 1.89@1.05μm |
| Dielectric constant | 10.8 |
Application
Reference
Application
- Infrared missile windows
- Infrared lenses
- High temperature windows
- Infrared laser
- High repetition rate oscillators
- Laser amplifiers
Reference
- “Laser emission under resonant pump in the emitting level of concentrated Nd : YAG ceramics”, Lupei, V, Pavel, N, APPLIED PHYSICS LETTERS , 2001,79 (5), p.590-592.
- “TRANSLUCENT Y3AL5O12 CERAMICS”, DEWITH, G, VANDIJK, HJA, MATERIALS RESEARCH BULLETIN, 1984,19 (12), p.1669-1674.
- “High-temperature deformation, behavior of polycrystalline yttrium aluminum garnet (YAG)”,Parthasarathy, T.A, Mah, T , Ceram. Eng. Sci. Proc. 1991, vol. 12 , p.1767-1773.
- “Optical properties and highly efficient laser oscillation of Nd : YAG ceramics”, Lu, J, Prabhu, M, APPLIED PHYSICS B-LASERS AND OPTICS ,2000,71 (4), p.469-473.
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