Propagation of light in serially coupled plasmonic nanowire dimer: Geometry dependence and polarization control

Danveer Singh; Mohit Raghuwanshi; G. V. Pavan Kumar

doi:10.1063/1.4752718

Propagation of light in serially coupled plasmonic nanowire dimer: Geometry dependence and polarization control

Danveer Singh, Mohit Raghuwanshi, G. V. Pavan Kumar

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14 Scopus citations

Abstract

We experimentally studied plasmon-polariton-assisted light propagation in serially coupled silver nanowire (Ag-NW) dimers and probed their dependence on bending-angle between the nanowires and polarization of incident light. From the angle-dependence study, we observed that obtuse angles between the nanowires resulted in better transmission than acute angles. From the polarization studies, we inferred that light emission from junction and distal ends of Ag-NW dimers can be systematically controlled. Further, we applied this property to show light routing and polarization beam splitting in obtuse-angled Ag-NW dimer. The studied geometry can be an excellent test-bed for plasmonic circuitry.

Original language	English
Article number	111111
Journal	Applied Physics Letters
Volume	101
Issue number	11
DOIs	https://doi.org/10.1063/1.4752718
State	Published - 10 Sep 2012
Externally published	Yes

Bibliographical note

Funding Information:
G.V.P.K. thanks Department of Science and Technology (DST), India for Ramanujan fellowship. This research was partially funded by DST-SERB Grant (SR/S2/LOP-0007/2011) and DST Nanoscience Unit Grant (SR/NM/NS-42/2009) at IISER-P. We thank National Chemical Laboratory, Pune for TEM imaging.

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title = "Propagation of light in serially coupled plasmonic nanowire dimer: Geometry dependence and polarization control",

abstract = "We experimentally studied plasmon-polariton-assisted light propagation in serially coupled silver nanowire (Ag-NW) dimers and probed their dependence on bending-angle between the nanowires and polarization of incident light. From the angle-dependence study, we observed that obtuse angles between the nanowires resulted in better transmission than acute angles. From the polarization studies, we inferred that light emission from junction and distal ends of Ag-NW dimers can be systematically controlled. Further, we applied this property to show light routing and polarization beam splitting in obtuse-angled Ag-NW dimer. The studied geometry can be an excellent test-bed for plasmonic circuitry.",

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N1 - Funding Information: G.V.P.K. thanks Department of Science and Technology (DST), India for Ramanujan fellowship. This research was partially funded by DST-SERB Grant (SR/S2/LOP-0007/2011) and DST Nanoscience Unit Grant (SR/NM/NS-42/2009) at IISER-P. We thank National Chemical Laboratory, Pune for TEM imaging.

PY - 2012/9/10

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N2 - We experimentally studied plasmon-polariton-assisted light propagation in serially coupled silver nanowire (Ag-NW) dimers and probed their dependence on bending-angle between the nanowires and polarization of incident light. From the angle-dependence study, we observed that obtuse angles between the nanowires resulted in better transmission than acute angles. From the polarization studies, we inferred that light emission from junction and distal ends of Ag-NW dimers can be systematically controlled. Further, we applied this property to show light routing and polarization beam splitting in obtuse-angled Ag-NW dimer. The studied geometry can be an excellent test-bed for plasmonic circuitry.

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Propagation of light in serially coupled plasmonic nanowire dimer: Geometry dependence and polarization control

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