Femtosecond and picosecond near-field ablation of gold nanotriangles: nanostructuring and nanomelting

Autor:	Anton Plech, Johannes Boneberg, Andreas Kolloch, Tobias Geldhauser, Kosei Ueno, Hiroaki Misawa, Paul Leiderer
Rok vydání:	2011
Předmět:	Plasmonic nanoparticles Nanostructure Materials science business.industry Physics::Optics Near and far field General Chemistry Laser law.invention Optics law Picosecond Femtosecond ddc:530 General Materials Science Nanometre business Plasmon
Zdroj:	Applied Physics A. 104:793-799
ISSN:	1432-0630 0947-8396
DOI:	10.1007/s00339-011-6443-8
Popis:	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. Two model 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a9bcdc2a468cb37bb105cf49ab7cf9c https://doi.org/10.1007/s00339-011-6443-8 Zobrazit plný text záznamu Plný text ve formátu PDF