Witness Pieces
Witness samples are critical to maintaining control of your thin film coating operation. Buy them from Lattice Materials and you’ll get the best quality, traceability and repeatability on the market in addition to excellent prices.
Custom witness samples are available in either flat or wedged configurations. Wedged parts are available with any angle you require and can be polished to extremely precise finishes, either single or double side.
We have the following witness pieces in stock, ready to ship:
- Round 1″ Silicon Witness Samples
- Round 1″ Germanium Witness Samples
Stocked Witness Sample Specifications:
- Monocrystalline Optical Grade Silicon or Polycrystalline Optical Grade Germanium
- Diameter 1.000″ +/-0.005″
- Thickness 0.040″ +/-0.002″
- DSP to 60/40 and <5 fringes
All witness samples are cleaned and packaged in a Class 10,000 cleanroom environment.
