YAG

YAG is an excellent substrate and window material that can be used for both UV and IR optics. It is particularly useful for high temperature and high-energy applications. YAG shows no trace absorption in the 2-3mm region where glasses tend to be highly absorbent due to the strong H2O band. The mechanical and chemical stability of YAG is similar to Sapphire, but YAG is not birefringence and is available with high optical homogeneity.

◆ Wide Transmission range: 250nm to 5000nm
◆ No absorption in the 2-3um
◆ High thermal conductivity, 10 times better than BK7
◆ Extremely hard and durable
◆ Non-birefringence
◆Stable mechanical and chemical properties
◆ High damage threshold
◆ High index of refraction and low aberration

Properity:

Mohs hardness	8-8.5
Thermal expansion	6.9´10 -6 ℃ -1
Thermal conductivity	13W×m -1 ×K -1
dn/dt	7.4´10 -6 ℃ -1
Diameter	10~120mm
Length	150mm
Wavefront distortion	l/6 each inch

Specification:

Diameter Tolerance	±0.1mm(standard)
Length Tolerance	±0.1mm(standard),
Perpendicularity	<15'
Parallelism	<1'
Flatness	l /8
Scratch-Dig	20/10