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dc.contributor.authorHolzbauer, Martin
dc.contributor.authorSzedlak, Rolf
dc.contributor.authorDetz, Hermann
dc.contributor.authorWeih, Robert
dc.contributor.authorHöfling, Sven
dc.contributor.authorSchrenk, Werner
dc.contributor.authorKoeth, Johannes
dc.contributor.authorStrasser, Gottfried
dc.identifier.citationHolzbauer , M , Szedlak , R , Detz , H , Weih , R , Höfling , S , Schrenk , W , Koeth , J & Strasser , G 2017 , ' Substrate-emitting ring interband cascade lasers ' , Applied Physics Letters , vol. 111 , no. 17 , 171101 .
dc.identifier.otherPURE: 251433588
dc.identifier.otherPURE UUID: cf931dfe-86d9-4868-b55d-4caad538b97a
dc.identifier.otherScopus: 85032568420
dc.identifier.otherWOS: 000413863400001
dc.descriptionThe authors acknowledge the support by the Austrian Science Fund (FWF) projects P26100-N27 (H2N) and NextLite (F4909-N23), and the State of Bavaria. HD acknowledges financial support through an APART fellowship from the Austrian Academy of Sciences.en
dc.description.abstractWe demonstrate interband cascade lasers fabricated into ring-shaped cavities with vertical light emission through the substrate at a wavelength of λ ≈ 3.7 µm. The out-coupling mechanism is based on a metallized second-order distributed feedback grating. At room-temperature, a pulsed threshold current-density of 0.75 kA/cm2 and a temperature-tuning rate of 0.3 nm/°C is measured. In contrast to the azimuthal polarization of ring quantum cascade lasers, we observe a radial polarization of the projected nearfield of ring interband cascade lasers. These findings underline the fundamental physical difference between light generation in interband and intersubband cascade lasers, offering new perspectives for device integration.
dc.relation.ispartofApplied Physics Lettersen
dc.rightsCopyright the Author(s) 2017. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (
dc.subjectQC Physicsen
dc.titleSubstrate-emitting ring interband cascade lasersen
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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