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Proceedings Paper

Optimization of passive and active fiber probe of scanning near-field optical microscopy
Author(s): Hai Ming; Guoping Zhang; Ming Bai; Lixin Xu; Bao Yang; Xiaogang Chen; Jiangping Xie; Yunxia Wu
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Paper Abstract

For the passive fiber probe, the dependence of the probes' transmission efficiencies on the parameters such as fiber probe shape, taper length, tip diameter and incident wavelength are analyzed with the coupled local-mode theory. It shows that the transmission efficiency of a parabolic fiber probe is about an order of magnitude higher than that of the conical fiber probe. With the increase of the incident wavelength, the transmission efficiency of fiber probes decrease. The images of phase grating by conical fiber probe and by parabolic fiber probe are compared. The Nd:YVO4 frequency-doubling laser with a miniature structure is used as light source in the experiment of SNOM, which provides higher transmission efficiency and make it fascinating in some SNOM's applications. As for active fiber probe, the ASE fiber probe is proposed. It has a wide spectrum of 6nm and may greatly reduce the coherent noise in SNOM image. It may improve the output photon flux several times higher than that of passive fiber probe. Meanwhile, the guide-wave reflection properties in fiber taper are investigated.

Paper Details

Date Published: 13 October 1998
PDF: 11 pages
Proc. SPIE 3467, Far- and Near-Field Optics: Physics and Information Processing, (13 October 1998); doi: 10.1117/12.326810
Show Author Affiliations
Hai Ming, Univ. of Science and Technology of China (China)
Guoping Zhang, Univ. of Science and Technology of China (China)
Ming Bai, Univ. of Science and Technology of China (China)
Lixin Xu, Univ. of Science and Technology of China (China)
Bao Yang, Univ. of Science and Technology of China (China)
Xiaogang Chen, Univ. of Science and Technology of China (China)
Jiangping Xie, Univ. of Science and Technology of China (China)
Yunxia Wu, Univ. of Science and Technology of China (China)


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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