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Witness Sample, Transmission, IR

Witness Sample, Transmission, IR

Esco PN:
  • $ 2450

Esco Optics witness samples used for transmission are precision polished on both sides to a scratch dig of 60-40. Flatness of each side is < 1 wave @ 633nm at 80% CA. Parallelism < 1 arc min. Edges are safety beveled. Witness sample diameter is 25.40mm and the thickness is 1.50mm.  All materials are fabricated from single crystals.

The refractive index values listed are representative of nd at 587nm. 

Diameter 25.40 mm +\-0.10
Thickness  1.50 mm +/-0.25
Flatness < 1.0 wave @ 633nm 
Surface Quality 60-40 scratch-dig
Edges Fine ground and beveled
Materials CaF2, Sapphire, ZnSe, Germanium, Silicon


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