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Size and shape dependent few-cycle near-field dynamics of bowtie nanoantennas

Lorek, Eleonora LU ; Mårsell, Erik LU ; Losquin, Arthur LU ; Miranda, Miguel LU ; Harth, Anne LU ; Guo, Chen LU ; Svärd, Robin LU ; Arnold, Cord LU ; L'Huillier, Anne LU and Mikkelsen, Anders LU , et al. (2015) In Optics Express 23(24). p.31460-31471
Abstract
Metal nanostructures can transfer electromagnetic energy from femtosecond laser pulses to the near-field down to spatial scales well below the optical diffraction limit. By combining few-femtosecond laser pulses with photoemission electron microscopy, we study the dynamics of the induced few-cycle near-field in individual bowtie nanoantennas. We investigate how the dynamics depend on antenna size and exact bowtie shape resulting from fabrication. Different dynamics are, as expected, measured for antennas of different sizes. However, we also detect comparable dynamics differences between individual antennas of similar size. With Finite-difference time-domain simulations we show that these dynamics differences between similarly sized... (More)
Metal nanostructures can transfer electromagnetic energy from femtosecond laser pulses to the near-field down to spatial scales well below the optical diffraction limit. By combining few-femtosecond laser pulses with photoemission electron microscopy, we study the dynamics of the induced few-cycle near-field in individual bowtie nanoantennas. We investigate how the dynamics depend on antenna size and exact bowtie shape resulting from fabrication. Different dynamics are, as expected, measured for antennas of different sizes. However, we also detect comparable dynamics differences between individual antennas of similar size. With Finite-difference time-domain simulations we show that these dynamics differences between similarly sized antennas can be due to small lateral shape variations generally induced during the fabrication. (Less)
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Contribution to journal
publication status
published
subject
in
Optics Express
volume
23
issue
24
pages
31460 - 31471
publisher
OSA
external identifiers
  • wos:000366614100115
  • scopus:84973368858
ISSN
1094-4087
DOI
10.1364/OE.23.031460
language
English
LU publication?
yes
id
5440ecee-6775-4d4d-b4af-d98643bebd9f (old id 8522425)
date added to LUP
2016-01-19 13:31:42
date last changed
2017-05-21 03:54:31
@article{5440ecee-6775-4d4d-b4af-d98643bebd9f,
  abstract     = {Metal nanostructures can transfer electromagnetic energy from femtosecond laser pulses to the near-field down to spatial scales well below the optical diffraction limit. By combining few-femtosecond laser pulses with photoemission electron microscopy, we study the dynamics of the induced few-cycle near-field in individual bowtie nanoantennas. We investigate how the dynamics depend on antenna size and exact bowtie shape resulting from fabrication. Different dynamics are, as expected, measured for antennas of different sizes. However, we also detect comparable dynamics differences between individual antennas of similar size. With Finite-difference time-domain simulations we show that these dynamics differences between similarly sized antennas can be due to small lateral shape variations generally induced during the fabrication.},
  author       = {Lorek, Eleonora and Mårsell, Erik and Losquin, Arthur and Miranda, Miguel and Harth, Anne and Guo, Chen and Svärd, Robin and Arnold, Cord and L'Huillier, Anne and Mikkelsen, Anders and Mauritsson, Johan},
  issn         = {1094-4087},
  language     = {eng},
  number       = {24},
  pages        = {31460--31471},
  publisher    = {OSA},
  series       = {Optics Express},
  title        = {Size and shape dependent few-cycle near-field dynamics of bowtie nanoantennas},
  url          = {http://dx.doi.org/10.1364/OE.23.031460},
  volume       = {23},
  year         = {2015},
}