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Proceedings Paper

Near-field optical virtual probe based on evanescence wave interference and nano-aperture
Author(s): Tao Hong; Jia Wang; Liqun Sun; Dacheng Li
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Paper Abstract

Near-field optical virtual probe (NFOVP) is a kind of immaterial tip based on evanescence wave interference and nano-aperture diffraction, which has great potential in near-field optical data storage, nano-lithography, near-field optical imaging and spectral detection, near-field optical manipulation and etc. . In this paper, the characteristics of NFOVP have been revealed through numerical simulation by the method of 3-D Finite-Difference Time-Domain (FDTD) and vector diffraction. The simulation results show that the transmission efficiency is higher than that of nanoaperture metal-coated fiber probe widely used in near-field optical systems. The FWHM of central peak, in other words, the size ofnear-field virtual probe is constant whatever the distance increases in a certain range so that the critical nanoseparation control in near-field optical system can be relaxed. A realization model of NFOVP in solid immersion lens system has been proposed. The influences of some factors of NFOVP, such as the shape and size of aperture, polarization and etc. have been analyzed. And the results also show that sidelobe suppression may depend on optimization ofaperture function and incident beams of NFOVP.

Paper Details

Date Published: 5 September 2002
PDF: 5 pages
Proc. SPIE 4923, Nano-Optics and Nano-Structures, (5 September 2002); doi: 10.1117/12.481724
Show Author Affiliations
Tao Hong, Tsinghua Univ. (China)
Jia Wang, Tsinghua Univ. (China)
Liqun Sun, Tsinghua Univ. (China)
Dacheng Li, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 4923:
Nano-Optics and Nano-Structures
Xing Zhu; Stephen Y. Chou; Yasuhiko Arakawa, Editor(s)

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