Femtosecond and Picosecond Near Field Ablation of Gold Nanotriangles : Nanostructuring and Nanomelting

We report on recent insights into the interaction between ultra-fast laser pulses and plasmonic nanoparticles. We discuss femtosecond near-field ablation as a simple but versatile tool for the nanoscale modification of surfaces and the high-resolution measurement of a nanostructure’s near field. Twomodel systems are presented, illustrating the complexity of near-field distributions. Furthermore, finite difference time domain calculations in combination with absorption spectra provide a deeper insight into the factors influencing the near-field distribution. For the first time, an almost perfect agreement between the measured ablation pattern and experiment has been reached for gold triangles with a side length around 500 nm. Additionally, the results from picosecond laser irradiated plasmonic structures display a new regime of nanoscale laser material processing. We present first results showing nanometre confined melting induced by laser pulses.

Subject (DDC)

530 Physics

Cite This

ISO 690

KOLLOCH, Andreas, Tobias GELDHAUSER, Kosei UENO, Hiroaki MISAWA, Johannes BONEBERG, Anton PLECH, Paul LEIDERER, 2011. Femtosecond and Picosecond Near Field Ablation of Gold Nanotriangles : Nanostructuring and Nanomelting. In: Applied Physics A. 104(3), pp. 793-799. ISSN 0947-8396. Available under: doi: 10.1007/s00339-011-6443-8

BibTex

@article{Kolloch2011Femto-17851,
  year={2011},
  doi={10.1007/s00339-011-6443-8},
  title={Femtosecond and Picosecond Near Field Ablation of Gold Nanotriangles : Nanostructuring and Nanomelting},
  number={3},
  volume={104},
  issn={0947-8396},
  journal={Applied Physics A},
  pages={793--799},
  author={Kolloch, Andreas and Geldhauser, Tobias and Ueno, Kosei and Misawa, Hiroaki and Boneberg, Johannes and Plech, Anton and Leiderer, Paul}
}

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    <dcterms:abstract xml:lang="eng">We report on recent insights into the interaction between ultra-fast laser pulses and plasmonic nanoparticles. We discuss femtosecond near-field ablation as a simple but versatile tool for the nanoscale modification of surfaces and the high-resolution measurement of a nanostructure’s near field. Twomodel systems are presented, illustrating the complexity of near-field distributions. Furthermore, finite difference time domain calculations in combination with absorption spectra provide a deeper insight into the factors influencing the near-field distribution. For the first time, an almost perfect agreement between the measured ablation pattern and experiment has been reached for gold triangles with a side length around 500 nm. Additionally, the results from picosecond laser irradiated plasmonic structures display a new regime of nanoscale laser material processing. We present first results showing nanometre confined melting induced by laser pulses.</dcterms:abstract>
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