Controlling the gain contribution of background emitters in few-quantum-dot microlasers
dc.contributor.author | Gericke, F. | |
dc.contributor.author | Segnon, M. | |
dc.contributor.author | von Helversen, M. | |
dc.contributor.author | Hopfmann, C. | |
dc.contributor.author | Heindel, T. | |
dc.contributor.author | Schneider, C. | |
dc.contributor.author | Höfling, S. | |
dc.contributor.author | Kamp, M. | |
dc.contributor.author | Musiał, A. | |
dc.contributor.author | Porte, X. | |
dc.contributor.author | Gies, C. | |
dc.contributor.author | Reitzenstein, Stephan | |
dc.date.accessioned | 2022-02-17T10:56:59Z | |
dc.date.available | 2022-02-17T10:56:59Z | |
dc.date.issued | 2018-02-15 | |
dc.date.updated | 2022-02-11T09:22:41Z | |
dc.description.abstract | We provide experimental and theoretical insight into single-emitter lasing effects in a quantum dot (QD)-microlaser under controlled variation of background gain provided by off-resonant discrete gain centers. For that purpose, we apply an advanced two-color excitation concept where the background gain contribution of off-resonant QDs can be continuously tuned by precisely balancing the relative excitation power of two lasers emitting at different wavelengths. In this way, by selectively exciting a single resonant QD and off-resonant QDs, we identify distinct single-QD signatures in the lasing characteristics and distinguish between gain contributions of a single resonant emitter and a countable number of off-resonant background emitters to the optical output of the microlaser. Our work addresses the important question whether single-QD lasing is feasible in experimentally accessible systems and shows that, for the investigated microlaser, the single-QD gain needs to be supported by the background gain contribution of off-resonant QDs to reach the transition to lasing. Interestingly, while a single QD cannot drive the investigated micropillar into lasing, its relative contribution to the emission can be as high as 70% and it dominates the statistics of emitted photons in the intermediate excitation regime below threshold. | en |
dc.description.sponsorship | EC/FP7/615613/EU/External Quantum Control of Photonic Semiconductor Nanostructures/EXQUISITE | en |
dc.identifier.eissn | 1367-2630 | |
dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/16428 | |
dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-15204 | |
dc.language.iso | en | en |
dc.rights.uri | https://creativecommons.org/licenses/by/3.0/ | en |
dc.subject.ddc | 530 Physik | de |
dc.subject.other | nanolasers | en |
dc.subject.other | cavity QED | en |
dc.subject.other | high-β lasing | en |
dc.subject.other | quantum dot–micropillar cavities | en |
dc.subject.other | single quantum dot laser | en |
dc.subject.other | semiconductor laser | en |
dc.title | Controlling the gain contribution of background emitters in few-quantum-dot microlasers | en |
dc.type | Article | en |
dc.type.version | publishedVersion | en |
dcterms.bibliographicCitation.articlenumber | 023036 | en |
dcterms.bibliographicCitation.doi | 10.1088/1367-2630/aaa477 | en |
dcterms.bibliographicCitation.issue | 2 | en |
dcterms.bibliographicCitation.journaltitle | New Journal of Physics | en |
dcterms.bibliographicCitation.originalpublishername | IOP | en |
dcterms.bibliographicCitation.originalpublisherplace | Bristol | en |
dcterms.bibliographicCitation.volume | 20 | en |
tub.accessrights.dnb | free | en |
tub.affiliation | Fak. 2 Mathematik und Naturwissenschaften::Inst. Festkörperphysik::AG Optoelektronik und Quantenbauelemente | de |
tub.affiliation.faculty | Fak. 2 Mathematik und Naturwissenschaften | de |
tub.affiliation.group | AG Optoelektronik und Quantenbauelemente | de |
tub.affiliation.institute | Inst. Festkörperphysik | de |
tub.publisher.universityorinstitution | Technische Universität Berlin | en |