| Basic Properties |
|---|
| Crystal structure |
cubic |
| Lattice |
a=5.462 |
| Density |
3.18 g/cm3 |
| Transmission Range |
170 nm~7800 nm |
| Melting Point |
1360°C |
| Specific Heat |
|
| Thermal Conductivity |
9.71W/m/K |
| Thermal Shock Resistance |
|
| Thermal Expansion Coefficient |
18.85X10 -6 /K |
| dn/dt, @633nm |
|
| Mohs Hardness |
6 |
| Refractive Index |
1.6921mm - 1.3161mm |
| Specifications of Windows and Mirrors |
| Diameter |
+/-0.0, -0.1mm |
| Thickness |
+/-0.2mm |
| Flatness |
better than λ 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 @1064nm |
