Size and shape dependent few-cycle near-field dynamics of bowtie nanoantennas
(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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https://lup.lub.lu.se/record/8522425
- author
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Optics Express
- volume
- 23
- issue
- 24
- pages
- 12 pages
- publisher
- Optical Society of America
- 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
- 2016-04-01 13:23:43
- date last changed
- 2023-11-12 16:26:04
@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 = {{Optical Society of America}}, 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}}, doi = {{10.1364/OE.23.031460}}, volume = {{23}}, year = {{2015}}, }