Tunable Unidirectional Coupling of Surface Plasmon Polaritons Utilizing a V-Shaped Slot Nanoantenna Column

Feng Huang; Hanning Yang; Siren Li; Xiangqian Jiang; Xiudong Sun

doi:10.1007/s11468-015-9988-0

Tunable Unidirectional Coupling of Surface Plasmon Polaritons Utilizing a V-Shaped Slot Nanoantenna Column

Feng Huang
, Hanning Yang
, Siren Li
, Xiangqian Jiang
, Xiudong Sun^*

^*Corresponding author for this work

School of Physics

Harbin Institute of Technology
Key Lab of Micro-Optics and Photonic Technology of Heilongjiang Province

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

A polarization-sensitive V-shaped slot nanoantenna column is utilized to realize tunable unidirectional coupling of surface plasmon polaritons (SPP). Two plasmon resonant modes are excited in the V-shaped slot nanoantennas with x- and y-polarized incident light, respectively. The electric fields of coupled SPP show different symmetries corresponding to that of the two resonant modes. Linear combinations of the two resonant modes result in asymmetric SPP intensity distributions. As a result, by controlling the incident polarizations, tunable unidirectional coupling of SPP to two opposite directions perpendicular to the column at different wavelengths are realized. A highest extinction ratio of 36.7 dB is achieved, and the extinction ratio keeps larger than 7 dB within a wavelength of 149 nm.

Original language	English
Pages (from-to)	1825-1831
Number of pages	7
Journal	Plasmonics
Volume	10
Issue number	6
DOIs	https://doi.org/10.1007/s11468-015-9988-0
State	Published - 1 Dec 2015

Keywords

Plasmon resonant mode
Polarization-sensitive nanoantenna
Surface plasmon polaritons
Unidirectional coupling

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10.1007/s11468-015-9988-0

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title = "Tunable Unidirectional Coupling of Surface Plasmon Polaritons Utilizing a V-Shaped Slot Nanoantenna Column",

abstract = "A polarization-sensitive V-shaped slot nanoantenna column is utilized to realize tunable unidirectional coupling of surface plasmon polaritons (SPP). Two plasmon resonant modes are excited in the V-shaped slot nanoantennas with x- and y-polarized incident light, respectively. The electric fields of coupled SPP show different symmetries corresponding to that of the two resonant modes. Linear combinations of the two resonant modes result in asymmetric SPP intensity distributions. As a result, by controlling the incident polarizations, tunable unidirectional coupling of SPP to two opposite directions perpendicular to the column at different wavelengths are realized. A highest extinction ratio of 36.7 dB is achieved, and the extinction ratio keeps larger than 7 dB within a wavelength of 149 nm.",

keywords = "Plasmon resonant mode, Polarization-sensitive nanoantenna, Surface plasmon polaritons, Unidirectional coupling",

author = "Feng Huang and Hanning Yang and Siren Li and Xiangqian Jiang and Xiudong Sun",

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T1 - Tunable Unidirectional Coupling of Surface Plasmon Polaritons Utilizing a V-Shaped Slot Nanoantenna Column

AU - Huang, Feng

AU - Yang, Hanning

AU - Li, Siren

AU - Jiang, Xiangqian

AU - Sun, Xiudong

PY - 2015/12/1

Y1 - 2015/12/1

N2 - A polarization-sensitive V-shaped slot nanoantenna column is utilized to realize tunable unidirectional coupling of surface plasmon polaritons (SPP). Two plasmon resonant modes are excited in the V-shaped slot nanoantennas with x- and y-polarized incident light, respectively. The electric fields of coupled SPP show different symmetries corresponding to that of the two resonant modes. Linear combinations of the two resonant modes result in asymmetric SPP intensity distributions. As a result, by controlling the incident polarizations, tunable unidirectional coupling of SPP to two opposite directions perpendicular to the column at different wavelengths are realized. A highest extinction ratio of 36.7 dB is achieved, and the extinction ratio keeps larger than 7 dB within a wavelength of 149 nm.

AB - A polarization-sensitive V-shaped slot nanoantenna column is utilized to realize tunable unidirectional coupling of surface plasmon polaritons (SPP). Two plasmon resonant modes are excited in the V-shaped slot nanoantennas with x- and y-polarized incident light, respectively. The electric fields of coupled SPP show different symmetries corresponding to that of the two resonant modes. Linear combinations of the two resonant modes result in asymmetric SPP intensity distributions. As a result, by controlling the incident polarizations, tunable unidirectional coupling of SPP to two opposite directions perpendicular to the column at different wavelengths are realized. A highest extinction ratio of 36.7 dB is achieved, and the extinction ratio keeps larger than 7 dB within a wavelength of 149 nm.

KW - Plasmon resonant mode

KW - Polarization-sensitive nanoantenna

KW - Surface plasmon polaritons

KW - Unidirectional coupling

UR - https://www.scopus.com/pages/publications/84947045201

U2 - 10.1007/s11468-015-9988-0

DO - 10.1007/s11468-015-9988-0

M3 - 文章

AN - SCOPUS:84947045201

SN - 1557-1955

VL - 10

SP - 1825

EP - 1831

JO - Plasmonics

JF - Plasmonics

IS - 6

ER -

Tunable Unidirectional Coupling of Surface Plasmon Polaritons Utilizing a V-Shaped Slot Nanoantenna Column

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Keywords

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