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dc.contributor.authorHolzinger, Steffen
dc.contributor.authorKreinberg, Sõren
dc.contributor.authorHokr, Brett H.
dc.contributor.authorSchneider, Christian
dc.contributor.authorHöfling, Sven
dc.contributor.authorChow, Weng W.
dc.contributor.authorPorte, Xavier
dc.contributor.authorReitzenstein, Stephan
dc.date.accessioned2018-11-23T16:30:09Z
dc.date.available2018-11-23T16:30:09Z
dc.date.issued2018-11-14
dc.identifier256344910
dc.identifier2f3c61aa-9a85-4a77-a8d7-15257503ea65
dc.identifier85057110358
dc.identifier000451213200027
dc.identifier.citationHolzinger , S , Kreinberg , S , Hokr , B H , Schneider , C , Höfling , S , Chow , W W , Porte , X & Reitzenstein , S 2018 , ' Determining the linewidth enhancement factor via optical feedback in quantum dot micropillar lasers ' , Optics Express , vol. 26 , no. 24 , pp. 31363-31371 . https://doi.org/10.1364/OE.26.031363en
dc.identifier.issn1094-4087
dc.identifier.urihttps://hdl.handle.net/10023/16540
dc.descriptionFunding: European Research Council under the European Union’s Seventh Framework Program (ERC Grant Agreement No. 615613); German Research Foundation (CRC 787); U.S. Department of Energy (Contract No. DE-AC04-94AL85000).en
dc.description.abstractThe linewidth enhancement factor α is a key parameter determining the spectral and dynamical behavior of semiconductor lasers. Here, we propose and demonstrate a method for determining this parameter based on a direct measurement of variations in the laser gain and emission spectrum when subject to delayed optical feedback. We then use our approach to determine the pump current dependent linewidth enhancement factor of a high-β quantum dot micropillar laser. The validity of our approach is confirmed comparing it to two conventional methods, one based on the comparison of the linewidths above and below threshold and the other based on injection locking properties. Furthermore, the pump power dependence of α is quantitatively described by simulations based on a quantum-optical model.
dc.format.extent1813747
dc.language.isoeng
dc.relation.ispartofOptics Expressen
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.subjectNDASen
dc.subject.lccQCen
dc.subject.lccTKen
dc.titleDetermining the linewidth enhancement factor via optical feedback in quantum dot micropillar lasersen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doihttps://doi.org/10.1364/OE.26.031363
dc.description.statusPeer revieweden


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