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Quantum cascade laser-pumped terahertz molecular lasers: frequency noise and phase-locking using a 1560nm frequency comb

hal.structure.identifierInstitut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
hal.structure.identifierPhotonique THz - IEMN [PHOTONIQUE THZ - IEMN]
dc.contributor.authorLAMPIN, Jean-Francois
hal.structure.identifierInstitut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
dc.contributor.authorPAGIES, Antoine
hal.structure.identifierLaboratoire Photonique, Numérique et Nanosciences [LP2N]
dc.contributor.authorSANTARELLI, Giorgio
hal.structure.identifierVirginia Diodes Inc
dc.contributor.authorHESLER, Jeffrey
hal.structure.identifierLaboratoire Kastler Brossel [LKB (Lhomond)]
hal.structure.identifierMenlo Systems GmbH
dc.contributor.authorHÄNSEL, Wolfgang
hal.structure.identifierMenlo Systems GmbH
dc.contributor.authorHOLZWARTH, Ronald
hal.structure.identifierInstitut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
hal.structure.identifierPhotonique THz - IEMN [PHOTONIQUE THZ - IEMN]
dc.contributor.authorBARBIERI, S
dc.date.accessioned2023-05-12T10:43:08Z
dc.date.available2023-05-12T10:43:08Z
dc.date.issued2020-01-20
dc.identifier.issn1094-4087
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/181667
dc.description.abstractEnThe recent demonstration of a terahertz (THz) molecular gas laser pumped by a mid-infrared quantum cascade laser (QCL) has opened up new perspectives for this family of sources, traditionally relying on CO2-laser pumping. A so far open question concerning QCL-pumped THz molecular lasers (MLs) is related to their spectral purity. Indeed, assessing their frequency/phase noise is crucial for a number of applications potentially exploiting these sources as local oscillators. Here this question is addressed by reporting the measurement of the frequency noise power spectral density (PSD) of a THz ML pumped by a 10.3µm-wavelength QCL, and emitting 1mW at 1.1THz in continuous wave. This is achieved by beating the ML frequency with the 1080 th harmonic of the repetition rate of a 1560nm frequency comb. We find a frequency noise PSD < 10Hz 2 /Hz (-95dBc/Hz) at 100kHz from the carrier. To demonstrate the effect of the stability of the pump laser on the spectral purity of the THz emission we also measure the frequency noise PSD of a CO2-laser-pumped 2.5THz ML, reaching 0.1Hz 2 /Hz (-105dBc/Hz) at 40kHz from the carrier, limited by the frequency noise of the frequency comb harmonic. Finally, we show that it is possible to actively phase-lock the QCL-pumped molecular laser to the frequency comb repetition rate harmonic by controlling the QCL current, demonstrating a sub-Hz linewidth. 2
dc.description.sponsorshipCentre expérimental pour l'étude des propriétés des nanodispositifs dans un large spectre du DC au moyen Infra-rouge. - ANR-11-EQPX-0015
dc.language.isoen
dc.publisherOptical Society of America - OSA Publishing
dc.title.enQuantum cascade laser-pumped terahertz molecular lasers: frequency noise and phase-locking using a 1560nm frequency comb
dc.typeArticle de revue
dc.identifier.doi10.1364/OE.379960
dc.subject.halSciences de l'ingénieur [physics]/Optique / photonique
dc.subject.halSciences de l'ingénieur [physics]
bordeaux.journalOptics Express
bordeaux.page2091-2106
bordeaux.volume28
bordeaux.hal.laboratoriesLaboratoire Photonique, Numérique et Nanosciences (LP2N) - UMR 5298*
bordeaux.issue2
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-02410876
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02410876v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Optics%20Express&amp;rft.date=2020-01-20&amp;rft.volume=28&amp;rft.issue=2&amp;rft.spage=2091-2106&amp;rft.epage=2091-2106&amp;rft.eissn=1094-4087&amp;rft.issn=1094-4087&amp;rft.au=LAMPIN,%20Jean-Francois&amp;PAGIES,%20Antoine&amp;SANTARELLI,%20Giorgio&amp;HESLER,%20Jeffrey&amp;H%C3%84NSEL,%20Wolfgang&amp;rft.genre=article


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