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Excitations of surface plasmon polaritons in double layer metal grating structures

Anttu, Nicklas LU ; Guan, Z. G.; Håkanson, Ulf LU ; Xu, Hongxing LU and Xu, Hongqi LU (2012) In Applied Physics Letters 100(9).
Abstract
We study the light scattering properties of double layer gratings (DLGs) made from Au on SiO2 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.... (More)
We study the light scattering properties of double layer gratings (DLGs) made from Au on SiO2 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. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3690947] (Less)
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type
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publication status
published
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in
Applied Physics Letters
volume
100
issue
9
publisher
American Institute of Physics
external identifiers
  • wos:000301504800011
  • scopus:84863275704
ISSN
0003-6951
DOI
10.1063/1.3690947
language
English
LU publication?
yes
id
130c80e5-b62c-49ac-9125-58c41d5c2baa (old id 2591498)
date added to LUP
2012-06-04 12:45:20
date last changed
2017-01-01 03:13:26
@article{130c80e5-b62c-49ac-9125-58c41d5c2baa,
  abstract     = {We study the light scattering properties of double layer gratings (DLGs) made from Au on SiO2 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. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3690947]},
  articleno    = {091111},
  author       = {Anttu, Nicklas and Guan, Z. G. and Håkanson, Ulf and Xu, Hongxing and Xu, Hongqi},
  issn         = {0003-6951},
  language     = {eng},
  number       = {9},
  publisher    = {American Institute of Physics},
  series       = {Applied Physics Letters},
  title        = {Excitations of surface plasmon polaritons in double layer metal grating structures},
  url          = {http://dx.doi.org/10.1063/1.3690947},
  volume       = {100},
  year         = {2012},
}