Near-field light generating element comprising surface...

Details Near-field light generating element comprising surface... Near-field light generating element comprising surface...

2009-01-07

2011-10-25

Neyzari, Ali (Department: 2627)

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Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

C369S112270

Reexamination Certificate

active

08045422

ABSTRACT:
Provided is a near-field light generating element in which as much amount as possible of waveguide light can be coupled with a plasmon antenna. The element comprises a light waveguide and a plasmon antenna comprising a surface or edge for propagating surface plasmon excited by waveguide light, extending to a near-field light generating end. A groove is formed in a waveguide side surface. And at least a portion of the surface or edge is embedded in the groove or located directly above the groove, being opposed to a wall or bottom surface of the groove with a predetermined distance, so as for waveguide light to be coupled with the plasmon antenna in surface plasmon mode. This configuration enables the surface or edge to be located at the position in which the surface or edge can be coupled with more amount of light, thereby to improve the light use efficiency.

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U.S. Appl. No. 12/260,639, filed Oct. 29, 2008 entitled Surface Plasmon Antenna With Propagation Edge and Near-Field Light Generating Element. Applicant: Koji Shimazawa.
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