Near-field light generating element utilizing surface plasmon

Details Near-field light generating element utilizing surface plasmon Near-field light generating element utilizing surface plasmon

2011-08-16

2011-08-16

Dinh, Tan X (Department: 2627)

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Magnetic field and light beam

C369S013130, C360S059000

Reexamination Certificate

active

08000178

ABSTRACT:
Provided is a surface plasmon antenna that can be set so that the emitting position on the end surface of the plasmon antenna where near-field light is emitted is located sufficiently close to the end of a magnetic pole. The surface plasmon antenna comprises an edge having a portion for coupling with a light in a surface plasmon mode. The edge is provided for propagating surface plasmon excited by the light and extends from the portion to a near-field light generating end surface that emits near-field light. The edge for propagating surface plasmon is a very narrow propagation region. Therefore, the near-field light generating end surface, which appears as a polished surface processed through polishing in the manufacturing of the plasmon antenna, can be made a shape with a very small size, and further can be set so that surface plasmon propagates to reach the end surface reliably.

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