DESO offers 4 inch Ge wafers for longpass SWIR filter.
4″ Ge Wafers for longpass SWIR filter Specificiations
Parameter |
Value |
Units |
Diameter (inches) |
4 |
inches |
Thickness |
1.5 +/- 0.1 |
mm |
Orientation |
N/A |
|
Conductivity |
N/A |
|
Resistivity |
N/A |
|
Surface Process |
Double-sided polished; minimum 90 mm diameter central clear aperture |
|
Scratch-dig |
60 – 40 scratch-dig or better |
|
Parallelism degree |
Less than 2 arc minutes parallelism |
|
Surface flatness |
Surfaces optically flat to within 1 fringe irregular per any 25 mm diameter in clear aperture |
|
For quotations and questions please contact: Admin@WafersUnlimited.com