Unidirectional Surface Plasmon Polariton Excitation on Single Slit with Oblique Backside Illumination
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We have theoretically investigated the unidirectional surface plasmon polariton (SPP) excitation on single slits with oblique backside illumination. An aperture diffraction method is devised, from which the conditions of slit width and beam illumination angle for the unidirectional SPP excitation are formulated analytically. The derived unidirectional conditions are validated with vectorial electromagnetic simulation using the rigorous coupled wave analysis.
KeywordsSurface plasmon polariton Unidirectional excitation Rigorous coupled wave analysis
This work was supported by Ministry of Education, Science and Technology of Korea and Korea Science and Engineering Foundation through the Creative Research Initiatives Program (Active Plasmonics Application Systems).