Offering a very wide transmission range, these ZnSe windows and can be provided with blank, polish finished, and coated for spectrometers and detectors. They operate over a transmission range from 0.6 to 18 µm and have a very low absorption coefficient of 0.0005/cm @ 10.6 µm while being non-hygroscopic. Highly stable in a laboratory environment, the ZnSe windows can be supplied in 0.5-inch to 3.0-inch O.D. sizes and various thicknesses to match specific customer requirements. Chemically vapor deposition grown, they are suitable for systems operating at various bands within the material’s wide trans-mission range. Typical surface quality in the IR are 40-20 scratch-dig, 60-40 in the 0.8 to 7 µm region, and 60-40, 80-50, or 120-80 scratch-dig for the 7 to 16 µm region, depending upon system performance requirements.
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