Germanium Replacement Window for Glass Vacuum Gas Cell, 1" OD, 0.197" Thickness.

This listing is for the sale of one (1) replacement window for an Ideal Vacuum Glass Vacuum Gas Cell with the following characteristics:

• Material: Germanium.
• Dimensions: 1" (25.4 mm) OD, 0.197" (5 mm) Thickness.
• 0.5° Wedge Between Transmitting Surfaces.
• Surface Flatness: λ/2 Over Central 10 mm, λ Over Entire Clear Aperture.

These windows are suitable for IR laser applications. The 0.5° wedge helps prevent unwanted etalon effects, fringe patterns, and cavity feedback. These windows are uncoated for use over their entire optical range.

Germanium Properties

Optical Transmission Range: 2 to 16µm Refractive Index: 4.0026 at 11µm Reflection Loss: 53% at 11µm (2 surfaces) Absorption Coef.: 2.7 x 10-2 cm-1 at 10.6µm

Chemical behavior of polished surfaces Climatic resistance class CR (n/a) (ISO/WD 13384) Acid resistance class SR (n/a) (ISO 8424) Alkali resistance class AR (n/a) (ISO 10629) Phosphate resistance class PR (n/a) (ISO 9689) Stain resistance class FR (n/a) Suitable for use with water