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Proceedings Paper

Enhancing throughput over 100 times by a triple-tapered structure for a near-field optical fiber probe
Author(s): Takashi Yatsui; Motonobu Kourogi; Kazuo Tsutsui; Motoichi Ohtsu
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Paper Abstract

We have successfully fabricated an extremely high throughput probe for near-field optics introducing a triple-tapered structure to reduce the loss in a tapered core, to focus the light, and to excite effectively the HE11 mode. A focused ion beam and selective chemical etching were used for fabrication. Over 100 times increase in the throughput of the triple-tapered probe with the aperture diameter D < 100 nm was realized in comparison with the conventional single-tapered probe. Furthermore, due to the third taper with a small cone angle, the localized optical near-field on the triple-tapered probe with D equals 60 nm has been confirmed.

Paper Details

Date Published: 13 October 1998
PDF: 10 pages
Proc. SPIE 3467, Far- and Near-Field Optics: Physics and Information Processing, (13 October 1998); doi: 10.1117/12.326807
Show Author Affiliations
Takashi Yatsui, Tokyo Institute of Technology (Japan)
Motonobu Kourogi, Tokyo Institute of Technology and Kanagawa Academy of Science and Technology (Japan)
Kazuo Tsutsui, Tokyo Institute of Technology (Japan)
Motoichi Ohtsu, Tokyo Institute of Technology and Kanagawa Academy of Science and Technology (Japan)


Published in SPIE Proceedings Vol. 3467:
Far- and Near-Field Optics: Physics and Information Processing
Suganda Jutamulia; Toshimitsu Asakura, Editor(s)

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