Grating surface plasmon coupler
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United States of America Patent
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Aug 23, 1988
Grant Date -
N/A
app pub date -
Mar 11, 1983
filing date -
Mar 11, 1983
priority date (Note) -
Expired
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Abstract
Devices for efficiently coupling electromagnetic radiation in the far infrared and sub-millimeter microwave regions of the electromagnetic spectrum to surface electromagnetic waves comprise a material of negative dielectric constant having a grating contoured surface overcoated with a transparent organopolymeric material. The efficiency of coupling between the free radiation and the surface electromagnetic waves can be optimized by adjusting the thickness of the overcoating layer.
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