%0 Journal Article %1 biagioni2009dependence %A Biagioni, Paolo %A Celebrano, Michele %A Savoini, Matteo %A Grancini, Giulia %A Brida, Daniele %A Mátéfi-Tempfli, Stefan %A Mátéfi-Tempfli, M. %A Duò, Lamberto %A Hecht, Bert %A Cerullo, Giulio %A Finazzi, Marco %D 2009 %J Phys. Rev. B %K TPPL experiment gold nano-optics %N 4 %P 045411 %R 10.1103/PhysRevB.80.045411 %T Dependence of the two-photon photoluminescence yield of gold nanostructures on the laser pulse duration %V 80 %X Two-photon photoluminescence (TPPL) from gold nanostructures is becoming one of the most relevant tools for plasmon-assisted biological imaging and photothermal therapy as well as for the investigation of plasmonic devices. Here we study the yield of TPPL as a function of the temporal width δ of the excitation laser pulses for a fixed average power. In the δ>1 ps regime, the TPPL yield decreases as δ is increased, while for shorter pulse widths it becomes independent of δ and, consequently, of the laser-pulse peak power. This peculiar dynamics is understood and modeled by considering that two-photon absorption in Au is a two-step process governed by the lifetime of the metastable state populated by the first photon absorption.

@article{biagioni2009dependence, abstract = {Two-photon photoluminescence (TPPL) from gold nanostructures is becoming one of the most relevant tools for plasmon-assisted biological imaging and photothermal therapy as well as for the investigation of plasmonic devices. Here we study the yield of TPPL as a function of the temporal width δ of the excitation laser pulses for a fixed average power. In the δ>1 ps regime, the TPPL yield decreases as δ is increased, while for shorter pulse widths it becomes independent of δ and, consequently, of the laser-pulse peak power. This peculiar dynamics is understood and modeled by considering that two-photon absorption in Au is a two-step process governed by the lifetime of the metastable state populated by the first photon absorption.}, added-at = {2020-02-21T10:31:41.000+0100}, author = {Biagioni, Paolo and Celebrano, Michele and Savoini, Matteo and Grancini, Giulia and Brida, Daniele and Mátéfi-Tempfli, Stefan and Mátéfi-Tempfli, M. and Duò, Lamberto and Hecht, Bert and Cerullo, Giulio and Finazzi, Marco}, biburl = {https://www.bibsonomy.org/bibtex/2527c95376481c5decd1fb03cf83a2f1d/ep5optics}, day = 14, doi = {10.1103/PhysRevB.80.045411}, file = {APS Snapshot:C\:\\Users\\scherzad\\Zotero\\storage\\LG824FSB\\PhysRevB.80.html:text/html;Biagioni et al. - 2009 - Dependence of the two-photon photoluminescence yie.pdf:C\:\\Users\\scherzad\\Zotero\\storage\\URUK6C65\\Biagioni et al. - 2009 - Dependence of the two-photon photoluminescence yie.pdf:application/pdf}, interhash = {d87597025b08351dff9eb5420ab5df15}, intrahash = {527c95376481c5decd1fb03cf83a2f1d}, journal = {Phys. Rev. B}, keywords = {TPPL experiment gold nano-optics}, month = {07}, number = 4, pages = 045411, timestamp = {2020-02-21T10:31:41.000+0100}, title = {Dependence of the two-photon photoluminescence yield of gold nanostructures on the laser pulse duration}, urldate = {2020-02-21}, volume = 80, year = 2009 }