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Ultrafast rerouting of light via slow modes in a nanophotonic directional coupler

Kampfrath, Tobias; Beggs, D. M.; White, Thomas; Burresi, M.; van Oosten, D.; Krauss, T. F.; Kuipers, L.

Description

We demonstrate that two coupled photonic-crystal waveguides can route two subsequently arriving light pulses to different output ports even though the pulses are only 3 ps apart. This rerouting of light is due to an ultrafast shift in the transmittance spectrum triggered by the generation of electrons and holes in the Si base material by a femtosecond laser pulse. The use of slow-light modes allows for a coupler length of only 5.2 μm. Since these modes are not directly involved, the 3 ps dead...[Show more]

dc.contributor.authorKampfrath, Tobias
dc.contributor.authorBeggs, D. M.
dc.contributor.authorWhite, Thomas
dc.contributor.authorBurresi, M.
dc.contributor.authorvan Oosten, D.
dc.contributor.authorKrauss, T. F.
dc.contributor.authorKuipers, L.
dc.date.accessioned2015-09-25T04:33:57Z
dc.date.available2015-09-25T04:33:57Z
dc.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/1885/15711
dc.description.abstractWe demonstrate that two coupled photonic-crystal waveguides can route two subsequently arriving light pulses to different output ports even though the pulses are only 3 ps apart. This rerouting of light is due to an ultrafast shift in the transmittance spectrum triggered by the generation of electrons and holes in the Si base material by a femtosecond laser pulse. The use of slow-light modes allows for a coupler length of only 5.2 μm. Since these modes are not directly involved, the 3 ps dead time is solely determined by the duration of the input pulse rather than its transit time through the device.
dc.description.sponsorshipWe acknowledge funding through the EU FP6-FET “SPLASH” project. This work is also part of the research program of FOM, which is financially supported by the NWO.
dc.publisherAmerican Institute of Physics
dc.rightshttp://www.sherpa.ac.uk/romeo/issn/0003-6951..."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 25/09/15). Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in (Kampfrath, T., et al. "Ultrafast rerouting of light via slow modes in a nanophotonic directional coupler." Applied Physics Letters 94.24 (2009): 241119.) and may be found at https://doi.org/10.1063/1.3153989
dc.sourceApplied Physics Letters
dc.subjectKeywords: Base material; Dead time; Electrons and holes; Femtosecond laser pulse; Input pulse; Light pulse; Output ports; Photonic crystal waveguide; Slow light; Slow mode; Transit time; Transmittance spectra; Ultra-fast; Nanophotonics; Semiconducting silicon compo
dc.titleUltrafast rerouting of light via slow modes in a nanophotonic directional coupler
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume94
dc.date.issued2009-06-19
local.identifier.absfor020200
local.identifier.absfor020500
local.identifier.ariespublicationf5625xPUB8329
local.publisher.urlhttps://www.aip.org/
local.type.statusPublished Version
local.contributor.affiliationKampfrath, Tobias, FOM Institute for Atomic and Moledular Physics (AMOLF), Netherlands
local.contributor.affiliationBeggs, Daryl M., University of St. Andrews, United Kingdom
local.contributor.affiliationWhite, Thomas, College of Engineering and Computer Science, College of Engineering and Computer Science, Research School of Engineering, The Australian National University
local.contributor.affiliationBurresi, M, FOM Institute AMOLF, Netherlands
local.contributor.affiliationvan Oosten, D., FOM Institute AMOLF, Netherlands
local.contributor.affiliationKrauss, Thomas F, University of St Andrews, United Kingdom
local.contributor.affiliationKuipers, L (Kobus), FOM Institute for Atomic and Molecular Physics (AMOLF), Netherlands
local.bibliographicCitation.issue24
local.bibliographicCitation.startpage241119
local.identifier.doi10.1063/1.3153989
dc.date.updated2016-02-24T09:41:26Z
local.identifier.scopusID2-s2.0-67649220967
CollectionsANU Research Publications

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