Tight focusing of laser light using a surface plasmon polariton in a silver nano-strip and nano-ring on silica glass

E.S. Kozlova; Image Processing Systems Institute оf the RAS – Branch of the FSRC "Crystallography and Photonics" RAS, Samara, Russia; V.V. Kotlyar; Samara National Research University, Samara, Russia; Image Processing Systems Institute оf the RAS – Branch of the FSRC "Crystallography and Photonics" RAS, Samara, Russia; Samara National Research University, Samara, Russia

doi:10.18287/2412-6179-2016-40-5-629-634

In this work a solitary surface plasmon-polariton was obtained by using a frequency-dependent finite difference time-domain method for the TM-and radially polarized light at 532 nm, which was propagated through silver nano-elements (a nano-strip and a nano-ring), placed in an aqueous medium. The device's height and width were equal to 20 nm and 215 nm respectively. The intensity of surface plasmon-polariton was four times higher than that of the incident radiation. The full width at half

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... of the nanojet was 138 nm and 158 nm for the case of using a nano-strip and a nano-ring respectively. The results can be used to design devices that allow capturing and moving particles in water or other biofluids.

doi:10.18287/2412-6179-2016-40-5-629-634 fatcat:phmv23a66nbibbm5lemsrfu7bu

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Citation

E.S. Kozlova, Image Processing Systems Institute оf the RAS – Branch of the FSRC "Crystallography and Photonics" RAS, Samara, Russia, V.V. Kotlyar, Samara National Research University, Samara, Russia, Image Processing Systems Institute оf the RAS – Branch of the FSRC "Crystallography and Photonics" RAS, Samara, Russia, Samara National Research University, Samara, Russia. "Tight focusing of laser light using a surface plasmon polariton in a silver nano-strip and nano-ring on silica glass." Computer Optics 40.5 (2016) 629-634

Tight focusing of laser light using a surface plasmon polariton in a silver nano-strip and nano-ring on silica glass

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