2.7 mu m quantum cascade detector: Above band gap energy intersubband detection

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dc.contributor.authorGiparakis, Miriamcs
dc.contributor.authorKnotig, Hedwigcs
dc.contributor.authorDetz, Hermanncs
dc.contributor.authorBeiser, Maximiliancs
dc.contributor.authorSchrenk, Wernercs
dc.contributor.authorSchwarz, Benediktcs
dc.contributor.authorStrasser, Gottfriedcs
dc.contributor.authorAndrews, Aaron Maxwellcs
dc.coverage.issue7cs
dc.coverage.volume120cs
dc.date.accessioned2022-08-16T06:54:18Z
dc.date.available2022-08-16T06:54:18Z
dc.date.issued2022-02-14cs
dc.description.abstractQuantum cascade detectors (QCDs) are mid-infrared and far-infrared, low-noise, photovoltaic detectors utilizing intersubband transitions. This Letter presents an InAs/AlAs0.16Sb0.84 based QCD lattice matched to an InAs substrate. This material system exhibits properties like a low effective electron mass of the well material of 0.023 m(0), beneficial for higher optical absorption strength, and a high conduction band offset of 2.1 eV, allowing the design of QCDs in the mid-infrared and near-infrared region. The presented QCD has a peak spectral response at 2.7 mu m (0.459 eV), the center of a CO2 absorption band. To enable top side illumination, a grating was implemented. This additionally bypasses absorption by the narrow bandgap 0.345 eV (3.54 mu m) InAs substrate material. The QCD has a peak responsivity at a room temperature of 5.63 mA/W and a peak specific detectivity of 1.14 x 10(8) Jones. (c) 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).en
dc.formattextcs
dc.format.extent1-4cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationApplied Physics Letters. 2022, vol. 120, issue 7, p. 1-4.en
dc.identifier.doi10.1063/5.0076856cs
dc.identifier.issn1077-3118cs
dc.identifier.other178603cs
dc.identifier.urihttp://hdl.handle.net/11012/208237
dc.language.isoencs
dc.publisherAIP Publishingcs
dc.relation.ispartofApplied Physics Letterscs
dc.relation.urihttps://aip.scitation.org/doi/10.1063/5.0076856cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1077-3118/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectLASERSen
dc.title2.7 mu m quantum cascade detector: Above band gap energy intersubband detectionen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-178603en
sync.item.dbtypeVAVen
sync.item.insts2022.08.16 08:54:18en
sync.item.modts2022.08.16 08:14:20en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Epitaxní materiály a nanostrukturycs
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Epitaxní materiály a nanostruktury