Undoped pure YAG is a new 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 2-3um region where glasses tends to be highly absorbent due to the strong H2O band. While compared to Sapphire, YAG is without birefringence while Sapphire is slightly with birefringence property. What’s more, YAG is with high mechanical and chemical stability which is similar to Sapphire and it’s available with high optical homogeneity.
Based on the Cz Growth method, LaserMa has successfully produced undoped pure YAG with high optical quality and large size up to dia50mm*150mm in large quantity.
Wide Transmission Range:
Useful from 250nm to 5000nm
No absorption in the 2-3um
Excellent Thermal and Opto-Mechanical Properties:
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
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 |
|
Main Specification:
|
Diameter Tolerance |
±0.05mm(standard), ±0.02mm(special) |
|
Length Tolerance |
±0.75mm(standard), ±0.25mm(special) |
|
Perpendicularity |
<5m(standard), <2(special) |
|
Parallelism |
<10s(standard) |
|
Flatness |
l/4(standard),
l/10(special) |
|
Scratch-Dig |
20-10(standard),10-5(special) | |
