Compare Model Drawings, CAD & Specs Diameter Material Antireflection Coating Surface Flatness Surface Quality Availability Price
$213
In Stock
25.4 mm Optical Grade Germanium Uncoated λ/20 @ 10.6 µm 40-20 scratch-dig
In Stock
$288
In Stock
25.0 mm Optical Grade Germanium 3-12 µm λ/20 @ 10.6 µm 40-20 scratch-dig
In Stock
$666
In Stock
50.0 mm Optical Grade Germanium 3-12 µm λ/20 @ 10.6 µm 40-20 scratch-dig
In Stock
$1,163
In Stock
74.9 mm Optical Grade Germanium 3-12 µm λ/20 @ 10.6 µm 40-20 scratch-dig
In Stock

Features

3 to12 µm Broadband Coating

The AR.20 broadband anti-reflection coating offered with our Germanium parallel windows is effective from 3 µm to 12 µm.

Germanium Optical Properties

Germanium Optical Windows have good transmittance from 2 to 16 µm uncoated, and very low peak absorption, making the material an excellent candidate for use in C02 laser cavities. Germanium also has high opacity across the entire visible spectrum, making the windows ideal for applications where transmission of IR wavelengths only is desired.