| Undoped YAG Crystal is an excellent material for making UV-IR
optical windows, particularly for high temperature and high energy
density applications, 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.
YAG products OSICO Technologies provided include as-grown YAG
boules ( grown by CZ technique), as-cut blocks, windows and mirrors,
etc.
Features:
• Transmission in 0.25-5.0mm, no absorption in 2-3mm
• Extremely hard and durable
• High thermal conductivity
• High bulk damage threshold
• High index of refraction and Non-birefringence
| Physical Properties |
|
| Crystal structure |
Cubic |
| Density |
4.5g/cm3 |
| Transmission Range |
250-5000nm |
| Melting Point |
1970¡ãC |
| Specific Heat |
0.59W.s/g/K |
| Thermal Conductivity |
14 W/m/K |
| Thermal Shock Resistance |
790 W/m |
| Thermal Expansion |
6.9x10-6/K |
| dn/dt, @633nm |
7.3x10-6/K-1 |
| Mohs Hardness |
8.5 |
| Refractive Index |
1.8245 @0.8mm, 1.8197 @1.0mm,
1.8121 @1.4mm |
| Main Specifications |
|
| Orientation |
[111] within 5¡ã |
| Diameter |
+/-0.1mm |
| Thickness |
+/-0.2mm |
| Flatness |
better than ¦Ë/8@633nm |
| Parallelism |
better than 30'' |
| Perpendicularity |
better than 5' |
| Surface Quality |
Scratch-Dig 10/5 per MIL-O-1383A |
| Wavefront Distortion |
better than l/2 per inch@1064nm |
Note: Customized YAG windows, AR and HR coatings are available upon
request.
|
