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Dynamical frequency pulling of degenerated and nondegenerated modes in small mode volume whispering-gallery terahertz quantum-cascade lasers

dc.contributor.authorFasching, Gernot
dc.contributor.authorBenz, Alexander
dc.contributor.authorDeutsch, Christoph
dc.contributor.authorAndrews, Aaron Maxwell
dc.contributor.authorZobl, Reinhard
dc.contributor.authorKlang, Pavel
dc.contributor.authorSchrenk, Werner
dc.contributor.authorStrasser, Gottfried
dc.contributor.authorTamošiūnas, Vincas
dc.contributor.authorUnterrainer, Karl
dc.date.accessioned2023-09-18T19:57:48Z
dc.date.available2023-09-18T19:57:48Z
dc.date.issued2008
dc.identifier.issn1386-9477
dc.identifier.other(BIS)VGT02-000015814
dc.identifier.urihttps://etalpykla.vilniustech.lt/handle/123456789/145111
dc.description.abstractWe present terahertz quantum-cascade lasers based on sub-wavelength circular-shaped double-metal microcavities whose single-mode emission can be fine-tuned via dynamical frequency pulling. This allows to estimate the peak gain of the material to and the shift of the cavity mode towards the gain maximum by 30 GHz. Strong mode confinement in the growth and in-plane directions are provided by a double-plasmon waveguide and due to the strong impedance mismatch between the gain material and air. These ultra-compact devices exhibit threshold currents as low as 13.5 mA. We lifted the natural two-fold degeneracy of the whispering-gallery modes by lifting the rotational symmetry of such resonators.eng
dc.formatPDF
dc.format.extentp. 1840-1843
dc.format.mediumtekstas / txt
dc.language.isoeng
dc.relation.isreferencedbyConference Proceedings Citation Index - Science (Web of Science)
dc.relation.isreferencedbyScienceDirect
dc.relation.isreferencedbyScience Citation Index Expanded (Web of Science)
dc.source.urihttps://www.sciencedirect.com/science/article/pii/S1386947707007850?via%3Dihub
dc.titleDynamical frequency pulling of degenerated and nondegenerated modes in small mode volume whispering-gallery terahertz quantum-cascade lasers
dc.typeStraipsnis Web of Science DB / Article in Web of Science DB
dcterms.references13
dc.type.pubtypeS1 - Straipsnis Web of Science DB / Web of Science DB article
dc.contributor.institutionViena University of Technology
dc.contributor.institutionVilniaus Gedimino technikos universitetas Puslaidininkių fizikos institutas
dc.contributor.facultyFundamentinių mokslų fakultetas / Faculty of Fundamental Sciences
dc.subject.researchfieldT 001 - Elektros ir elektronikos inžinerija / Electrical and electronic engineering
dc.subject.researchfieldN 002 - Fizika / Physics
dc.subject.ltTerahercai
dc.subject.ltMikrorezonatoriai
dc.subject.ltLazeris
dc.subject.ltVienamodis
dc.subject.ltDažnio traukimas
dc.subject.ltŠnabždesių galerija
dc.subject.enTerahertz
dc.subject.enMicrocavity
dc.subject.enLaser
dc.subject.enIntersubband
dc.subject.enSingle-mode
dc.subject.enFrequency pulling
dc.subject.enWhispering-gallery
dcterms.sourcetitlePhysica E: low-dimensional systems and nanostructures : Elsevier
dc.description.issueiss. 6
dc.description.volumeVol. 40
dc.identifier.doiLBT02-000030806
dc.identifier.doi000255717400018
dc.identifier.doi10.1016/j.physe.2007.11.004
dc.identifier.elaba3803346


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