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dc.contributor.authorMusiał, A.
dc.contributor.authorHopfmann, C.
dc.contributor.authorHeindel, T.
dc.contributor.authorGies, C.
dc.contributor.authorFlorian, M.
dc.contributor.authorLeymann, H. A. M.
dc.contributor.authorFoerster, A.
dc.contributor.authorSchneider, C.
dc.contributor.authorJahnke, F.
dc.contributor.authorHöfling, S.
dc.contributor.authorKamp, M.
dc.contributor.authorReitzenstein, S.
dc.identifier.citationMusiał , A , Hopfmann , C , Heindel , T , Gies , C , Florian , M , Leymann , H A M , Foerster , A , Schneider , C , Jahnke , F , Höfling , S , Kamp , M & Reitzenstein , S 2015 , ' Correlations between axial and lateral emission of coupled quantum dot-micropillar cavities ' , Physical Review. B, Condensed matter and materials physics , vol. 91 , no. 20 , 205310 , pp. 1-10 .
dc.identifier.otherPURE: 240813143
dc.identifier.otherPURE UUID: 7aed0762-a58b-4158-9086-fef2559764e6
dc.identifier.otherBibtex: urn:134707596101ab8e21b013bed5810cfd
dc.identifier.otherScopus: 84930225119
dc.identifier.otherWOS: 000354977600002
dc.descriptionThe authors acknowledge financial support by the German Research Foundation via Projects No. Ka2318/4-1 and No. Re2974/3-1, the SFB 787 “Semiconductor Nanophotonics: Materials, Models, Devices,” and the State of Bavaria.en
dc.description.abstractWe report on optical studies of coupled quantum dot–micropillar cavities using a 90∘ excitation-and-detection scheme. This specific configuration allows us to excite the micropillar structures either in the axial direction or in the lateral direction and to simultaneously detect emission from both directions. That enables us to reveal correlations between emission into the cavity mode and the leaky modes in the regime of cavity quantum electrodynamics. In particular, we can access and distinguish between axial cavity emission and lateral emission consisting of emission of quantum dots into the leaky modes and losses due to sidewall scattering, respectively. In the multiemitter regime, this technique provides direct access to the respective loss channels and reveals a strong increase of sidewall losses in the low-diameter regime below about 3.0 μm. Beyond that, in the single-emitter regime, we observe an anticorrelation between quantum dot emission coupled into the cavity mode and into the leaky modes which is controlled by light-matter interaction in the weak coupling regime. This anticorrelation is absent in the strong coupling regime due to the presence of entangled light-matter states. Moreover, excitation-power-dependent studies demonstrate that the intensity ratio between axial and lateral emission increases strongly above the lasing threshold due to enhanced directionality of emission into the lasing mode. In fact, theoretical studies confirm that this intensity ratio is an additional indicator of laser action in high-β microlasers for which the onset of lasing is difficult to identify by the input-output characteristics.
dc.relation.ispartofPhysical Review. B, Condensed matter and materials physicsen
dc.rights©2015 American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at
dc.subjectQC Physicsen
dc.titleCorrelations between axial and lateral emission of coupled quantum dot-micropillar cavitiesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.description.statusPeer revieweden

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