Plasmon generator having flare shaped section
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United States of America Patent
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May 5, 2015
Grant Date -
Sep 25, 2014
app pub date -
Mar 25, 2013
filing date -
Mar 25, 2013
priority date (Note) -
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Abstract
The present invention relates to a plasmon generator, in which a surface plasmon is excited by application of light. The plasmon generator extends along one direction. The plasmon generator includes a first end surface that is positioned on one end in the one direction and at which near-field light is generated along with the excitation of the plasmon; and a second cross section that is substantially parallel to the first end surface and is away from the first end surface. The first end surface has a polygonal shape that does not have a substantially acute inner angle. The second cross section has an upper part that has a shape substantially the same as or similar to that of the first end surface and a flare shaped lower part that is connected to the upper part and has a width that increases as it is far from the upper part.
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