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dc.contributor.authorMunoz, Michel Castellanos
dc.contributor.authorPetrov, Alexander Yu.
dc.contributor.authorO'Faolain, Liam
dc.contributor.authorLi, Juntao
dc.contributor.authorKrauss, Thomas F.
dc.contributor.authorEich, Manfred
dc.date.accessioned2014-07-24T13:31:01Z
dc.date.available2014-07-24T13:31:01Z
dc.date.issued2014-02-07
dc.identifier135025347
dc.identifier7ad4a006-805e-4f8d-bb62-4e471b81d56c
dc.identifier000331950100008
dc.identifier84894505152
dc.identifier000331950100008
dc.identifier.citationMunoz , M C , Petrov , A Y , O'Faolain , L , Li , J , Krauss , T F & Eich , M 2014 , ' Optically induced indirect photonic transitions in a slow light photonic crystal waveguide ' , Physical Review Letters , vol. 112 , no. 5 , 053904 . https://doi.org/10.1103/PhysRevLett.112.053904en
dc.identifier.issn0031-9007
dc.identifier.urihttps://hdl.handle.net/10023/5073
dc.descriptionM.C.M., A.Y.P. and M.E. acknowledge the support of the German Research Foundation under Grant EI 391/13-2, and appreciate the support of CST, Darmstadt, Germany, with their Finite Integration Software Microwave Studio. J.L. acknowledges the support of the National Natural Science Foundation of China (11204386), the Guangdong Natural Science Foundation (S2012040007812) and NKBRSF (G2010CB923200). T.F.K. and L.O’F acknowledge support by the EPSRC through the UK Silicon Photonics consortium.en
dc.description.abstractWe demonstrate indirect photonic transitions in a silicon slow light photonic crystal waveguide. The transitions are driven by an optically generated refractive index front that moves along the waveguide and interacts with a signal pulse copropagating in the structure. We experimentally confirm a theoretical model which indicates that the ratio of the frequency and wave vector shifts associated with the indirect photonic transition is identical to the propagation velocity of the refractive index front. The physical origin of the transitions achieved here is fundamentally different than in previously proposed refractive index modulation concepts with fixed temporal and spatial modulation frequencies; as here, the interaction with the refractive index front results in a Doppler-like signal frequency and wave vector shift. Consequently, the bandwidth over which perfect mode frequency and wave vector matching is achieved is not intrinsically limited by the shape of the photonic bands, and tuning of the indirect photonic transitions is possible without any need for geometrical modifications of the structure. Our device is genuinely nonreciprocal, as it provides different frequency shifts for co- and counterpropagating signal and index fronts.
dc.format.extent5
dc.format.extent344016
dc.format.extent426108
dc.language.isoeng
dc.relation.ispartofPhysical Review Lettersen
dc.subjectElectromagnetic-wavesen
dc.subjectIonization fronten
dc.subjectSiliconen
dc.subjectConversionen
dc.subjectQC Physicsen
dc.subjectBDCen
dc.subjectR2Cen
dc.subject.lccQCen
dc.titleOptically induced indirect photonic transitions in a slow light photonic crystal waveguideen
dc.typeJournal articleen
dc.contributor.sponsorEPSRCen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Microphotonics and Photonic Crystals Groupen
dc.identifier.doi10.1103/PhysRevLett.112.053904
dc.description.statusPeer revieweden
dc.identifier.grantnumberEP/F001622/1en


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