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Undoped YAG
The undoped YAG (Y3Al5O12) is widely used for high temperature and high-energy applications . its mechanical and chemical stability is similar to sapphire, but YAG is no birefringence and no trace absorption between 2-3micron. It has higher optical homogeneity. It is an excellent new substrate and window material for UV and IR optics.
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Physical Properties |
molecular Formula |
Y3Al5O12 |
Crystal Structure |
Cubic a=12.01Å |
Crystal Purity |
>99.999% |
Density |
4.56g /cm3 |
Melt Point |
1970oC |
Thermal Expansion |
6.9×10-6
/℃ @ 0 ~ 250℃ |
Thermal Conductivity |
143W/(m.k) @ 20℃ |
dh / dt |
7.4 ×10-6 /℃ |
Hardness
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8.5Mohs |
Transmission Range |
250 ~ 5000 nm without absorption in 2000 - 3000 nm |
Standard Size |
Dia. 3” X 0.5mm , Dia. 2” X 0.5mm
50 X 50 X 0.5mm , 20 X 20 X 0.5mm
10 X 10 X 0.5mm
Special size and orientation are available upon request.
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Orientation |
<100> <110> <111> |
Orientation Accuracy |
±0.3o |
Polishing & Micro Roughness
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Single or double sides polished Ra<5Å |
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