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dc.contributor.authorWei, Binbinen
dc.contributor.authorKindness, Stephenen
dc.contributor.authorAlmond, Nikitaen
dc.contributor.authorWallis, Ren
dc.contributor.authorWu, Yuqingen
dc.contributor.authorRen, Yen
dc.contributor.authorShi, SCen
dc.contributor.authorBraeuninger-Weimer, Philippen
dc.contributor.authorHofmann, Stephanen
dc.contributor.authorBeere, Harveyen
dc.contributor.authorRitchie, Daviden
dc.contributor.authorDegl'Lnnocenti, Ren
dc.date.accessioned2018-09-05T11:11:55Z
dc.date.available2018-09-05T11:11:55Z
dc.date.issued2018-05-14en
dc.identifier.issn0003-6951
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/279301
dc.description.abstractAbstract: We demonstrate the amplitude stabilization of a 2.85 THz quantum cascade laser with a graphene loaded split-ring-resonator array, acting as an external amplitude modulator. The transmittance of the modulator can be actively changed by modifying the graphene conductivity via electrostatic back-gating. The modulator operates at room temperature and is capable of actively modulating the quantum cascade laser power level and thus stabilizing the power output via a proportional-integral-derivative feedback control loop. The stability was enhanced by more than 10 times through actively tuning the modulation. Furthermore, this approach can be used to externally control the laser power with a high level of stability.
dc.description.sponsorshipThis work is supported by funding from the Engineering and Physical Sciences Research Council (Grant No. EP/P021859/1, HyperTerahertz–High precision terahertz spectroscopy and microscopy).
dc.publisherAIP
dc.titleAmplitude stabilization and active control of a terahertz quantum cascade laser with a graphene loaded split-ring-resonator arrayen
dc.typeArticle
prism.issueIdentifier20en
prism.publicationDate2018en
prism.publicationNameApplied Physics Lettersen
prism.volume112en
dc.identifier.doi10.17863/CAM.26680
dcterms.dateAccepted2018-05-02en
rioxxterms.versionofrecord10.1063/1.5027687en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2018-05-14en
dc.contributor.orcidBraeuninger-Weimer, Philipp [0000-0001-8677-1647]
dc.contributor.orcidHofmann, Stephan [0000-0001-6375-1459]
dc.contributor.orcidBeere, Harvey [0000-0001-5630-2321]
dc.contributor.orcidRitchie, David [0000-0002-9844-8350]
dc.contributor.orcidDegl'Lnnocenti, R [0000-0003-2655-1997]
dc.identifier.eissn1077-3118
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (via University of Leeds) (EP/P021859/1)
pubs.funder-project-idEPSRC (EP/K016636/1)
pubs.funder-project-idEPSRC (1635658)
rioxxterms.freetoread.startdate2019-05-14


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