Numerical Analysis of Ridged-Circular Nanoaperture for Near-Field Optical Disk. (29th October 2013)

• Record Type: Journal Article
• Authors: Kitamura, Toshiaki
• Other Names: Gonzalez-Leal J. M. Academic Editor.; Kassab L. Academic Editor.
• Is Part Of: ISRN optics. Volume 2013(2013)
• Publication Date: 2013-10-29
• Subjects: Optics -- Periodicals; Optics; Periodicals; 535
• DOI: 10.1155/2013/543960
• Languages: English
• ISSNs: 2090-7826

Abstract

Abstract : A ridged-circular nanoaperture is investigated through three-dimensional (finite-difference time-domain) FDTD method. The motion equations of free electrons are inserted to analyze a metallic material. The electromagnetic field distributions of optical near-field around the aperture are investigated. The phase change disk illuminated by a near-field optical light through a ridged-circular nanoaperture is also analyzed. The far-field scattering patterns from the phase change disk and the crosstalk characteristics between plural marks are studied.