Transparent metallo-dielectric photonic band gap structure
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United States of America Patent
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Jul 17, 2001
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N/A
app pub date -
Sep 16, 1997
filing date -
Sep 16, 1997
priority date (Note) -
Expired
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Abstract
A transparent metal structure permits the transmission of light over a tunable range of frequencies, for example, visible light, and shields ultraviolet light and all other electromagnetic waves of lower frequencies, from infrared to microwaves and beyond. The transparent metal structure comprises a stack of alternating layers of a high index material and a low index material, at least one of the materials being a metal. By carefully choosing the thickness of the second material, the transparent window can be tuned over a wide range of frequencies.
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