10 September 2010 Controlling the state of surface plasmon vortex by changing the topological charge and polarization state
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Abstract
The local excitation of the surface plasmon vortex and hot spot via the plasmonic vortex lens is both theoretically studied and experimentally demonstrated. The phase delay of the excited surface plasmon is caused by the three parameters, which are the geometrical topological charge of the plasmonic vortex lens, the polarization state of the incident beam, and the angular momentum state of the incident beam. These parameters eventually decide the total topological charge of the surface plasmon vortex generated at the center of the plasmonic lens structure. From these results, we finally provide the simple relation between these parameters and the state of the surface plasmon vortex generated by plasmonic lens.ïýïý
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Seung-Yeol Lee, Seung-Yeol Lee, Junghyun Park, Junghyun Park, Hwi Kim, Hwi Kim, Seong-Woo Cho, Seong-Woo Cho, Byoungho Lee, Byoungho Lee, } "Controlling the state of surface plasmon vortex by changing the topological charge and polarization state", Proc. SPIE 7757, Plasmonics: Metallic Nanostructures and Their Optical Properties VIII, 77573G (10 September 2010); doi: 10.1117/12.861168; https://doi.org/10.1117/12.861168
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