Head for recording and reading optical data and method of...

Dynamic information storage or retrieval – Detail of optical slider per se

Reexamination Certificate

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Reexamination Certificate

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07379415

ABSTRACT:
The present invention relates to a head for recording/reading optical data and method of manufacturing the same. The present invention completely buries an aperture with a material a third non-linear coefficient of which is great in order to induce self-focusing. Thus, the present invention can reduce the amount of beam by about one half wavelength and focus the beam in a parabolic shape having almost no optical loss. Therefore, the present invention can improve the transmissivity of the probe by several hundreds times compared to a conventional optical fiver probe, by effectively exciting a near-field scanning optical microscopy for the aperture at an end portion of the probe.

REFERENCES:
patent: 5053832 (1991-10-01), Uchida
patent: 5513196 (1996-04-01), Bischel et al.
patent: 5843844 (1998-12-01), Miyanaga
patent: 6215114 (2001-04-01), Yagi et al.
patent: 6886238 (2005-05-01), Song et al.
patent: 6928227 (2005-08-01), Shaw et al.
patent: 6961300 (2005-11-01), Cheong et al.
patent: 3-139823 (1991-06-01), None
patent: 03139823 (1991-06-01), None
patent: 2000-046141 (2000-07-01), None
Direct Observation of Selffocusing with subdiffraction limited resolution using near field scanning optical microscope; K. Song.
High Throughput aperture near-field scanning optical microscopy; P. Minh.
Increased throughput of near-field optical fiber probe over 1000 times by the use of a triple tapered structure; T. Yatsui.
High efficient excitation of optical near field on an apertured fiber probe with an asymmetric structure; T. Yatsui.

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