Infrared Optical Materials Mark Burgener 5 December 2016

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Presentation transcript:

Infrared Optical Materials Mark Burgener 5 December 2016

Transmission Material Germanium (Ge) Silicon MWIR or LWIR SWIR though MWIR Hard and dense Magnesium Fluoride Slightly radioactive Durable Good transmission Index of refraction function of temperature AR coating Sodium Chloride <100°C Water soluble Higher index of refraction Potassium Bromide Zinc Sulfide (ZnS) a.k.a. Cleartran Calcium Fluoride Strong Broadband Zinc Selenide (ZnSe) More uniform = better quality One system ZnSe window with ZnS coating

Transmission Material Sapphire Aluminum Oxynitride (ALON) Strong and hard Ceramic material Applications for Cubic structure Single manufacturer High abrasion High temperature UV through MWIR High pressure MWIR degrades stating at 4.2µm Visible though MWIR Spinel High Cost Diamond All bands Good for high temperature applications MWIR degrades stating at 4.8µm Manufacturing

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