Reflection from a free carrier front via an intraband indirect photonic transition

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dc.contributor.authorGaafar, Mahmoud A.
dc.contributor.authorJalas, Dirk
dc.contributor.authorO'Faolain, Liam
dc.contributor.authorLi, Juntao
dc.contributor.authorKrauss, Thomas F.
dc.contributor.authorPetrov, Alexander Yu.
dc.contributor.authorEich, Manfred
dc.contributor.funderScience Foundation Ireland
dc.contributor.funderNational Natural Science Foundation of China
dc.contributor.funderMinistry of Science and Technology of the People's Republic of China
dc.contributor.funderUniversität Hamburg
dc.contributor.funderComputer Simulation Technology
dc.contributor.funderDeutsche Forschungsgemeinschaft
dc.date.accessioned2018-05-31T11:56:26Z
dc.date.available2018-05-31T11:56:26Z
dc.description.abstractThe reflection of light from moving boundaries is of interest both fundamentally and for applications in frequency conversion, but typically requires high pump power. By using a dispersion-engineered silicon photonic crystal waveguide, we are able to achieve a propagating free carrier front with only a moderate on-chip peak power of 6Win a 6 ps-long pump pulse. We employ an intraband indirect photonic transition of a co-propagating probe, whereby the probe practically escapes from the front in the forward direction. This forward reflection has up to 35% efficiency and it is accompanied by a strong frequency upshift, which significantly exceeds that expected from the refractive index change and which is a function of group velocity, waveguide dispersion and pump power. Pump, probe and shifted probe all are around 1.5 mu m wavelength which opens new possibilities for "on-chip" frequency manipulation and all-optical switching in optical telecommunications.en
dc.description.sponsorshipGerman Research Foundation (261759120); Universität Hamburg (Michel Castellanos Munoz); Ministry of Science and Technology of the People's Republic of China (2016YFA0301300); National Natural Science Foundation of China (11761131001, 11674402)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid1447
dc.identifier.citationGaafar, M. A., Jalas, D., O’Faolain, L., Li, J., Krauss, T. F., Petrov, A. Y. and Eich, M. (2018) 'Reflection from a free carrier front via an intraband indirect photonic transition', Nature Communications, 9, 1447 (10pp). doi: 10.1038/s41467-018-03862-0en
dc.identifier.doi10.1038/s41467-018-03862-0
dc.identifier.endpage10
dc.identifier.issn2041-1723
dc.identifier.issued2018
dc.identifier.journaltitleNature Communicationsen
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/6216
dc.identifier.volume9
dc.language.isoenen
dc.publisherNature Publishing Groupen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2276/IE/I-PIC Irish Photonic Integration Research Centre/
dc.relation.urihttps://www.nature.com/articles/s41467-018-03862-0
dc.rights© 2018, the Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectOptical materials and structuresen
dc.subjectOptics and photonicsen
dc.subjectSlow lighten
dc.titleReflection from a free carrier front via an intraband indirect photonic transitionen
dc.typeArticle (peer-reviewed)en
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