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《JOURNAL OF SOUTH CHINA NORMAL UNIVERSITY》 1996-01
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A photon theory hypothesis about photon tunneling microscope's subwavelength resolution

Yanbin Zhu(Leser Life Science Institute, South China Normal University, Guangzhou 510631, P.R.China)  
Foundations for the invention of the photon scanning tunneling microscope (PSTM)are the near field scanning optical microscope (NFSOM), the optical fiber technique (OF), the total internal reflection (TIR),high sensitive opto-electronic detecting technique,computer technique etc. Recent research results shown the subwavelength resolution of 1~3nm is obtained. How to explain that the PSTM has got so high subwavelength resolution? What value is the PSTM's limiting on subwavelength resolution? To resolve these problems, this paper presented a photon theory hypothesis about PSTM, which based on the follwing two basic laws:1. Photon is not only a carrier of energy and optical informations, but also is a particle occupying fixed space size.2. When reflection, refraction or scattering happed, a photon only changes its energy and optical information carried; its particle size does not change. i .e.photon = constant.Applying this two basic laws to PSTM, the "evanescent field" is pratically a weak photon distribution field and the detecting fiber tip diameter is pratically a "gate" which size controls the photon numbers into fiber tip. Through calculations and inferences the following three conclusions can be reached:1. when the PSTM 's detection system sensitivity is high enough, the diameter D of detecting fiber tip and the near field detecting destance Z are two most important factors deciding the subwavelength resolution of PSTM.2. Limiting on PSTM's resolution is ditermined by the conditions of D =photon and Z=photon, where photon is oen photon size.3. The final resolution limit R of PSTM will be
【CateGory Index】: TN16
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