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Proceedings Paper

Photon theory hypothesis about photon tunneling microscope's subwavelength resolution
Author(s): Yanbin Zhu; Junfu Ma
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Paper Abstract

The foundation for the invention of the photon scanning tunneling microscope (PSTM) are the near field scanning optical microscope, the optical fiber technique, the total internal reflection, high sensitive opto-electronic detecting technique and computer technique etc. Recent research results show the subwavelength resolution of 1 - 3 nm is obtained. How to explain the PSTM has got such high subwavelength resolution? What value is the PSTM's limiting of subwavelength resolution? For resolving these problems this paper presented a photon theory hypothesis about PSTM that is based on the following two basic laws: (1) Photon is not only a carrier bringing energy and optical information, but also is a particle occupied fixed space size. (2) When a photon happened reflection, refraction, scattering, etc., only changed its energy and optical information carried, its particle size doesn't change. g (DOT) pphoton equals constant. Using these two basic laws to PSTM, the `evanescent field' is practically a weak photon distribution field and the detecting fiber tip diameter is practically a `gate' which size controlled the photon numbers into fiber tip. Passing through some calculation and inference, the following three conclusions can be given: (1) Under the PSTM's detection system sensitivity is high enough, the diameter D of detecting fiber tip and the near field detecting distance Z are the two most important factors to decide the subwavelength resolution of PSTM. (2) The limiting of PSTM's resolution will be given upon the conditions of D equals pphoton and Z equals pphoton, where pphoton is one photon size. (2) The final resolution limit R of PSTM will be lim R equals pphoton, D yields pphoton, Z yields pphoton.

Paper Details

Date Published: 6 September 1995
PDF: 5 pages
Proc. SPIE 2535, Near-Field Optics, (6 September 1995); doi: 10.1117/12.218685
Show Author Affiliations
Yanbin Zhu, South China Normal Univ. (China)
Junfu Ma, South China Normal Univ. (China)

Published in SPIE Proceedings Vol. 2535:
Near-Field Optics
Michael A. Paesler; Patrick J. Moyer, Editor(s)

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