Low-Loss Coupling of Quantum Cascade Lasers into Hollow-Core Waveguides with Single-Mode Output in the 3.7–7.6 μm Spectral Range

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dc.citation.articleNumber533
dc.citation.issueNumber4en_US
dc.citation.journalTitleSensorsen_US
dc.citation.volumeNumber16en_US
dc.contributor.authorPatimisco, Pietroen_US
dc.contributor.authorSampaolo, Angeloen_US
dc.contributor.authorMihai, Lauraen_US
dc.contributor.authorGiglio, Marilenaen_US
dc.contributor.authorKriesel, Jasonen_US
dc.contributor.authorSporea, Danen_US
dc.contributor.authorScamarcio, Gaetanoen_US
dc.contributor.authorTittel, Frank K.en_US
dc.contributor.authorSpagnolo, Vincenzoen_US
dc.date.accessioned2016-04-29T15:49:33Z
dc.date.available2016-04-29T15:49:33Z
dc.date.issued2016en_US
dc.description.abstractWe demonstrated low-loss and single-mode laser beam delivery through hollow-core waveguides (HCWs) operating in the 3.7–7.6 μm spectral range. The employed HCWs have a circular cross section with a bore diameter of 200 μm and metallic/dielectric internal coatings deposited inside a glass capillary tube. The internal coatings have been produced to enhance the spectral response of the HCWs in the range 3.5–12 µm. We demonstrated Gaussian-like outputs throughout the 4.5–7.6 µm spectral range. A quasi single-mode output beam with only small beam distortions was achieved when the wavelength was reduced to 3.7 μm. With a 15-cm-long HCW and optimized coupling conditions, we measured coupling efficiencies of >88% and transmission losses of <1 dB in the investigated infrared spectral range.en_US
dc.identifier.citationPatimisco, Pietro, Sampaolo, Angelo, Mihai, Laura, et al.. "Low-Loss Coupling of Quantum Cascade Lasers into Hollow-Core Waveguides with Single-Mode Output in the 3.7–7.6 μm Spectral Range." <i>Sensors,</i> 16, no. 4 (2016) MDPI: http://dx.doi.org/10.3390/s16040533.
dc.identifier.doihttp://dx.doi.org/10.3390/s16040533en_US
dc.identifier.urihttps://hdl.handle.net/1911/90376
dc.language.isoengen_US
dc.publisherMDPI
dc.rightsThis is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.subject.keywordsingle-mode outputen_US
dc.subject.keywordhollow-core waveguideen_US
dc.subject.keywordquantum cascade laseren_US
dc.subject.keywordoptical couplingen_US
dc.titleLow-Loss Coupling of Quantum Cascade Lasers into Hollow-Core Waveguides with Single-Mode Output in the 3.7–7.6 μm Spectral Rangeen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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