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.

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530 Physik

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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. 2011, 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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