|
As the hardest of oxide crystals, sapphire has a combination of optical and physical properties that make it the best choice for a variety of demanding online_orderings. Sapphire maintains its strength even at high temperatures. It has good thermal properties, excellent electrical and dielectric properties and is resistant to chemical attack. These properties encourage the use of sapphire in aggressive environments where reliability, optical transmission and strength are requied.
 Physical and Optical Properties: |
Properties |
Values |
| Crystal structure |
Hexagonal System |
| Lattice |
a=4.785?, C=12.991? |
| Density |
3.98g/cm 3 |
| Transmission Range |
150-5500nm |
| Melting Point |
2040°C |
| Specific Heat |
0.418 W.s/g/K |
| Thermal Conductivity |
25.12 W/m/K |
| Thermal Shock Resistance |
790 W/m |
| Thermal Expansion Coefficient |
5.8x10 -6 /K |
| dn/dt, @633nm |
13x10 -6 /K |
| Mohs Hardness |
9 |
| Refractive Index |
1.83 @0.26 mm, 1.76 @0.63 mm, 1.58 @5.57 mm |
| |
| Our Manufacture Technical Capabilities: |
Properties |
Values |
| Diameter |
+/-0.0, -0.1mm |
| Thickness |
+/-0.2mm |
| Flatness |
better than l per 25 @633nm |
| Parallelism |
better than 3' |
| Perpendicularity |
better than 5' |
| Scratch-Dig |
80-50 per MIL-O-13830A |
| Wavefront Distortion |
less than l /2 per inch( l @1064nm) |
| Please Contact ultiQuest for more information and technical supports. |
| |
| NOTES! |
|
|
Be sure to wear laser safety goggles when checking optical path and adjusting optical axis. |
|
|
Download PDF document
