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High frequency modulation and (quasi) single-sideband emission of mid-infrared ring and ridge quantum cascade lasers

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dc.affiliation.dptoUC3M. Departamento de Tecnología Electrónicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Sensores y Técnicas de Instrumentaciónes
dc.contributor.authorHinkov, Borislav
dc.contributor.authorHayden, Jackob
dc.contributor.authorSzedlak, Rolf
dc.contributor.authorMartín Mateos, Pedro
dc.contributor.authorJerez González, Borja
dc.contributor.authorAcedo Gallardo, Pablo
dc.contributor.authorStrasser, Gottfried
dc.contributor.authorLendl, Bernhard
dc.contributor.funderAustrian Science Fund (FWF) (F49-P09, M2485-N34); Austria Research Promotion Agency (FFG) (4241316)en
dc.date.accessioned2023-01-30T13:28:30Z
dc.date.available2023-01-30T13:28:30Z
dc.date.issued2019-05-13
dc.description.abstractWe investigate the high frequency modulation characteristics of mid-infrared surface-emitting ring and edge-emitting ridge quantum cascade lasers (QCLs). In particular, a detailed comparison between circular ring devices and ridge-QCLs from the same laser material, which have a linear waveguide in a "Fabry-Perot (FP) type" cavity, reveals distinct similarities and differences. Both device types are single-mode emitting, based on either 2nd-(ring-QCL) or 1st-order (ridge-QCL) distributed feedback (DFB) gratings with an emission wavelength around 7.56 mum. Their modulation characteristics are investigated in the frequency-domain using an optical frequency-to-amplitude conversion technique based on the ro-vibrational absorptions of CH 4. We observe that the amplitude of frequency tuning Delta f over intensity modulation index in as function of the modulation frequency behaves similarly for both types of devices, while the ring-QCLs typically show higher values. The frequency-to-intensity modulation (FM-IM) phase shift shows a decrease starting from similar to 72 degrees at a modulation frequency of 800 kHz to about 0 degrees at 160 MHz. In addition, we also observe a quasi single-sideband (qSSB) regime for modulation frequencies above 100 MHz, which is identified by a vanishing-1 st-order sideband for both devices. This special FM-state can be observed in DFB QCLs and is in strong contrast to the behavior of regular DFB diode lasers, which do not achieve any significant sideband suppression. By analyzing these important high frequency characteristics of ring-QCLs and comparing them to ridge DFB-QCLs, it shows the potential of intersubband devices for applications in e.g. novel spectroscopic techniques and highly-integrated and high-bitrate free-space data communication. In addition, the obtained results close an existing gap in literature for high frequency modulation characteristics of QCLs.en
dc.format.extent9
dc.identifier.bibliographicCitationHinkov, B., Hayden, J., Szedlak, R., Martin-Mateos, P., Jerez, B., Acedo, P., Strasser, G. & Lendl, B. (2019). High frequency modulation and (quasi) single-sideband emission of mid-infrared ring and ridge quantum cascade lasers. Optics Express, 27(10), 14716.en
dc.identifier.doihttps://doi.org/10.1364/OE.27.014716
dc.identifier.issn1094-4087
dc.identifier.publicationfirstpage14716
dc.identifier.publicationissue10
dc.identifier.publicationlastpage14724
dc.identifier.publicationtitleOptics Expressen
dc.identifier.publicationvolume27
dc.identifier.urihttps://hdl.handle.net/10016/36411
dc.identifier.uxxiAR/0000023829
dc.language.isoengen
dc.publisherOpticaen
dc.rights© 2019. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaElectrónicaes
dc.subject.otherDistributed feedback lasersen
dc.subject.otherFree space opticsen
dc.subject.otherFrequency modulationen
dc.subject.otherLaser materialsen
dc.subject.otherQuantum cascade semiconductor lasersen
dc.subject.otherWhispering gallery modesen
dc.titleHigh frequency modulation and (quasi) single-sideband emission of mid-infrared ring and ridge quantum cascade lasersen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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