[OPTICAL REVIEW Vol. 6, No. 3 (1999) 249-256]

Simulations of Two-Dimensional Photon Scanning Tunneling Microscope by Boundary Integral Equation Method: p-polarization*

Kazuo TANAKA,1, Masahiro TANAKA1 and Kiyofumi KATAYAMA2

1Department of Electronics and Computer Engineering, Gifu University, 1-1, Yanagido, Gifu, 501-1193 Japan, 2Department of Administration and Informatics, Tokoha-Gakuen Hamamatsu University, 1230, Miyakoda-cho, Hamamatsu, Shizuoka, 431-2102 Japan

(Received December 7, 1998; Accepted February 4, 1999)

Accurate simulations of a two-dimensional photon scanning tunneling microscope (2D-PSTM) for incident p-polarized waves (TM-mode) have been performed by the boundary integral equations called guided-mode extracted integral equations. The method used in this paper is a global method and the case of uncoated dielectric probe is treated. Complete and rigorous integral equations for a given configuration of 2D-PSTM have been solved numerically by the conventional boundary-element method with high accuracy. Using three universal laws, i.e., the optical theorem, the energy conservation law and the reciprocity relation for incident p-polarized waves, numerical results have been confirmed. The basic physical characteristics of interaction between probe-tip and near-field for incident p-polarized waves are compared in detail with those of incident s-polarized waves (TE-mode) which are previously reported.