کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
850568 909287 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Plasmonic planar lens based on stack of metal–insulator–metal waveguides with height tuning
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Plasmonic planar lens based on stack of metal–insulator–metal waveguides with height tuning
چکیده انگلیسی

We introduce a technique capable of focusing electromagnetic (EM) waves through plasmonic nanoslits symmetrically arranged along the indented semi-circular surface in silver background. The EM transports through the tuning slits in the form of surface plasmon polaritons (SPPs), and gets the required phase retardations to focus at the focal plane. Due to the subwavelength nature of planar metallic lens, we present the rigorous electromagnetic analysis by using two dimensional (2D) finite difference time domain (FDTD) method. These height-modulated slits with uniform width are demonstrated to have unique advantages in beam manipulation. In combination with previous studies, it is expected that our structure with small number of slits could lead to realization of optimum designs of plasmonic nano-lens.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 124, Issue 21, November 2013, Pages 4780–4783
نویسندگان
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