Excitations of surface plasmon polaritons in double layer metal grating structures

N. Anttu; Z. Q. Guan; U. Håkanson; H. X. Xu; H. Q. Xu

doi:10.1063/1.3690947

Excitations of surface plasmon polaritons in double layer metal grating structures

N. Anttu^*, Z. Q. Guan, U. Håkanson, H. X. Xu, H. Q. Xu

^*Corresponding author for this work

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

12 Citations (Scopus)

Abstract

We study the light scattering properties of double layer gratings (DLGs) made from Au on SiO ₂ substrates. It is found that surface plasmon polaritons (SPPs) can be excited in the DLGs for a separation of up to 150 nm between the two Au grating layers and the collective reflectance spectra exhibit a strong resonant peak and a closely lying dip as a result of the surface plasmon polariton excitations. It is also found that the angle-resolved specular reflectance spectra show a dip-peak pair structure, while the angle-resolved reflectance spectra of higher diffracted orders show a complementary peak-dip pair structure. Finally, operation of the DLGs for efficient wavelength demultiplexing is proposed and discussed in light of these results.

Original language	English
Article number	091111
Journal	Applied Physics Letters
Volume	100
Issue number	9
DOIs	https://doi.org/10.1063/1.3690947
Publication status	Published - 2012
Externally published	Yes
MoE publication type	A1 Journal article-refereed

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title = "Excitations of surface plasmon polaritons in double layer metal grating structures",

abstract = "We study the light scattering properties of double layer gratings (DLGs) made from Au on SiO 2 substrates. It is found that surface plasmon polaritons (SPPs) can be excited in the DLGs for a separation of up to 150 nm between the two Au grating layers and the collective reflectance spectra exhibit a strong resonant peak and a closely lying dip as a result of the surface plasmon polariton excitations. It is also found that the angle-resolved specular reflectance spectra show a dip-peak pair structure, while the angle-resolved reflectance spectra of higher diffracted orders show a complementary peak-dip pair structure. Finally, operation of the DLGs for efficient wavelength demultiplexing is proposed and discussed in light of these results.",

author = "N. Anttu and Guan, {Z. Q.} and U. H{\aa}kanson and Xu, {H. X.} and Xu, {H. Q.}",

note = "Funding Information: The authors wish to thank Mariusz Graczyk for help with sample preparation and Professor Lars Montelius for stimulating discussions. This work was supported by the Swedish Research Council (VR), the Swedish Foundation for Strategic Research (SSF) through the Nanometer Structure Consortium at Lund University (nmC@LU), the Crafoord Foundation, EU program AMON-RA (No. 214814), E.ON AG through the E.ON International Research Initiative, and the National Basic Research Program of the Ministry of Science and Technology of China (Nos. 2012CB932703 and 2012CB932700).",

year = "2012",

doi = "10.1063/1.3690947",

language = "English",

volume = "100",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Excitations of surface plasmon polaritons in double layer metal grating structures

AU - Anttu, N.

AU - Guan, Z. Q.

AU - Håkanson, U.

AU - Xu, H. X.

AU - Xu, H. Q.

N1 - Funding Information: The authors wish to thank Mariusz Graczyk for help with sample preparation and Professor Lars Montelius for stimulating discussions. This work was supported by the Swedish Research Council (VR), the Swedish Foundation for Strategic Research (SSF) through the Nanometer Structure Consortium at Lund University (nmC@LU), the Crafoord Foundation, EU program AMON-RA (No. 214814), E.ON AG through the E.ON International Research Initiative, and the National Basic Research Program of the Ministry of Science and Technology of China (Nos. 2012CB932703 and 2012CB932700).

PY - 2012

Y1 - 2012

N2 - We study the light scattering properties of double layer gratings (DLGs) made from Au on SiO 2 substrates. It is found that surface plasmon polaritons (SPPs) can be excited in the DLGs for a separation of up to 150 nm between the two Au grating layers and the collective reflectance spectra exhibit a strong resonant peak and a closely lying dip as a result of the surface plasmon polariton excitations. It is also found that the angle-resolved specular reflectance spectra show a dip-peak pair structure, while the angle-resolved reflectance spectra of higher diffracted orders show a complementary peak-dip pair structure. Finally, operation of the DLGs for efficient wavelength demultiplexing is proposed and discussed in light of these results.

AB - We study the light scattering properties of double layer gratings (DLGs) made from Au on SiO 2 substrates. It is found that surface plasmon polaritons (SPPs) can be excited in the DLGs for a separation of up to 150 nm between the two Au grating layers and the collective reflectance spectra exhibit a strong resonant peak and a closely lying dip as a result of the surface plasmon polariton excitations. It is also found that the angle-resolved specular reflectance spectra show a dip-peak pair structure, while the angle-resolved reflectance spectra of higher diffracted orders show a complementary peak-dip pair structure. Finally, operation of the DLGs for efficient wavelength demultiplexing is proposed and discussed in light of these results.

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U2 - 10.1063/1.3690947

DO - 10.1063/1.3690947

M3 - Article

AN - SCOPUS:84863275704

SN - 0003-6951

VL - 100

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 9

M1 - 091111

ER -

Excitations of surface plasmon polaritons in double layer metal grating structures

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