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

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dc.contributor.author Gaafar, Mahmoud A.
dc.contributor.author Jalas, Dirk
dc.contributor.author O'Faolain, Liam
dc.contributor.author Li, Juntao
dc.contributor.author Krauss, Thomas F.
dc.contributor.author Petrov, Alexander Yu.
dc.contributor.author Eich, Manfred
dc.date.accessioned 2018-05-31T11:56:26Z
dc.date.available 2018-05-31T11:56:26Z
dc.identifier.citation Gaafar, 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/s41467-018-03862-0 en
dc.identifier.volume 9
dc.identifier.issued 2018
dc.identifier.startpage 1
dc.identifier.endpage 10
dc.identifier.issn 2041-1723
dc.identifier.uri http://hdl.handle.net/10468/6216
dc.identifier.doi 10.1038/s41467-018-03862-0
dc.description.abstract The 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.sponsorship German 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.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Nature Publishing Group en
dc.relation.uri https://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.uri http://creativecommons.org/licenses/by/4.0/
dc.subject Optical materials and structures en
dc.subject Optics and photonics en
dc.subject Slow light en
dc.title Reflection from a free carrier front via an intraband indirect photonic transition en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Liam O’Faolain, Tyndall National Institute, University College Cork, Cork, Ireland. +353-21-490-3000. Email: liam.ofaolain@tyndall.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder Science Foundation Ireland
dc.contributor.funder National Natural Science Foundation of China
dc.contributor.funder Ministry of Science and Technology of the People's Republic of China
dc.contributor.funder Universität Hamburg
dc.contributor.funder Computer Simulation Technology
dc.contributor.funder Deutsche Forschungsgemeinschaft
dc.description.status Peer reviewed en
dc.identifier.journaltitle Nature Communications en
dc.internal.IRISemailaddress liam.ofaolain@tyndall.ie en
dc.identifier.articleid 1447
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2276/IE/I-PIC Irish Photonic Integration Research Centre/


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© 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/ Except where otherwise noted, this item's license is described as © 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/
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