A Simulation of Near-Field Optics: Optical Waves Through an Aperture in 3D Thick Metallic Screen by Volume Integral Equation Method.

Abstract

Non-member Masahiro Tanaka ＊ Non-member Optical near-field in the aperture in the thick metallic screen is analyzed numerically by the three-dimensional volume integral equation with Generalized Minimum Residual Method. Numerical results have been confirmed by the invariance of the results of the discretized size and reciprocity. The dependence of the scattering cross section on the thickness of the screen have been calculated. It is found that near-field distribution around the small aperture is a slightly different from Bethe's results.

Simulation of confined and enhanced optical near-fields for an I-shaped aperture in a pyramidal structure on a thick metallic screen

“…The present code has been checked by confirming the conver-gence of E C (x) at points far from the aperture through confirmation of the independence of the near-field and crosssection W from the truncated size C x ϫC y , and by checking the reciprocity relation. 23 In this article in order to show the validity of the numerical results, the independence of nearfield intensities from the size of the discretized cube ͑␦͒ is evaluated. Given the parameters k 0 C x ϫk 0 C y ϫk 0 wϭ17.2 ϫ17.…”