OPTICAL INTERFACE FOR REDUCED LOSS IN SPINEL WINDOWS
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United States of America Patent
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Jan 24, 2019
app pub date -
Sep 27, 2018
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Sep 27, 2018
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A spinel-based optical element made by a method for reducing transmission losses in the spinel-based optical element by building a structure on the surface of the optical element without the use of a previously prepared master. The structure can be built through reactive ion etching (RIE) of a pattern obtained through photolithography and liftoff, through RIE of a pattern through e-beam writing and liftoff, through RIE of a pattern using a self organized metal mask, or by direct hot-pressing the structure during fabrication of the optical element.
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