Optimal plasmonic focusing on a metal disc under radially polarized terahertz illumination
نویسندگان
چکیده
منابع مشابه
Optimal plasmonic focusing on a metal disc under radially polarized terahertz illumination
Optimal focusing of surface plasmon polaritons in the center of a metal disc illuminated by radially polarized terahertz pulses is demonstrated. By matching the cylindrical symmetry of the metal structure with the radially polarized terahertz field, surface plasmons are excited along its entire circumference. Constructive interference in the disc center produces a sharp frequency-dependent foca...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2013
ISSN: 1367-2630
DOI: 10.1088/1367-2630/15/7/075005