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dc.contributor.authorKnoetig, Hedwig
dc.contributor.authorHinkov, Borislav
dc.contributor.authorWeih, Robert
dc.contributor.authorHoefling, Sven
dc.contributor.authorKoeth, Johannes
dc.contributor.authorStrasser, Gottfried
dc.identifier.citationKnoetig , H , Hinkov , B , Weih , R , Hoefling , S , Koeth , J & Strasser , G 2020 , ' Continuous-wave operation of vertically emitting ring interband cascade lasers at room temperature ' , Applied Physics Letters , vol. 116 , no. 13 , 131101 .
dc.identifier.otherPURE: 267453464
dc.identifier.otherPURE UUID: 75106527-5b53-45f7-a4bb-64359bf87460
dc.identifier.otherWOS: 000523433400001
dc.identifier.otherScopus: 85082738712
dc.descriptionFunding: The authors are grateful for financial support received under Austrian Research Promotion Agency (FFG) project No. 1516332 (ATMO-SENSE).en
dc.description.abstractWe present vertical light emission in continuous-wave mode from an interband cascade laser (ICL) at a record temperature of up to 38 °C. These results pave the way toward a more efficient and compact integration of this technology in mobile spectroscopic applications. Our approach employs ring cavity ICLs that are mounted epi-side down for efficient heat extraction from the devices. The vertical single-mode emission relies on a metallized second-order distributed-feedback grating designed for an emission wavelength of 3.8 μm. A single lateral mode operation is favored by a narrow waveguide width of 4 μm. Optical output powers of more than 6 mW were measured at 20 °C for rings with a diameter of ∼800 μm. At this temperature, the threshold current-density amounted to 0.60 kA/cm2 and the device showed continuous current and temperature tuning rates of 0.06 nm/mA and 0.37 nm/K, respectively.
dc.relation.ispartofApplied Physics Lettersen
dc.rightsCopyright © 2020 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.titleContinuous-wave operation of vertically emitting ring interband cascade lasers at room temperatureen
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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