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Butt-Coupling of 4.5 μm Quantum Cascade Lasers to Silica Hollow Core Anti-Resonant Fibers

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cris.lastimport.scopus2024-02-12T20:42:39Z
dc.abstract.enWe report on experimental characterization of butt-coupling between a quantum cascade laser operating around the wavelength of 4.5 μm and a silica hollow core anti-resonant fiber. The used fiber has a single ring of non-touching capillaries surrounding a 42.5 μm dimeter air core and a mid-infrared transmission window in the wavelength range of 2.8 to 4.7 μm. A lens-less butt-coupling interconnection is established and coupling efficiency of 22% is achieved with over 100 mW of power at the fiber output. Bending losses in this test-bed system are verified depending on radius with the loss remaining below 1 dB/m for 20 mm loops, while bend losses exceeding 10 dB/m are observed when the fiber is bent down to a 5-mm radius. The presented coupling dramatically improves the output beam quality of the quantum cascade laser with a measured NA = 0.45. The beam at the fiber output has a circular shape, measured M 2 = 1.04 and uniform numerical aperture of NA = 0.13. Together with the hollow core fiber geometry, the proposed system would be suitable for simple implementations of absorption spectroscopy of popular atmospheric agents, like N 2 O.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKlimczak, Mariusz
dc.contributor.authorPierscinska, Dorota
dc.contributor.authorBUCZYŃSKI, RYSZARD
dc.contributor.authorSobczak, Grzegorz
dc.contributor.authorStępniewski, Grzegorz
dc.contributor.authorPierscinski, Kamil
dc.contributor.authorDobrakowski, Dominik
dc.contributor.authorBugajski, Maciej
dc.contributor.authorPysz, Dariusz
dc.date.accessioned2024-01-24T18:57:40Z
dc.date.available2024-01-24T18:57:40Z
dc.date.issued2021
dc.description.financePublikacja bezkosztowa
dc.description.number10
dc.description.volume39
dc.identifier.doi10.1109/JLT.2021.3062490
dc.identifier.issn0733-8724
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/102624
dc.identifier.weblinkhttp://xplorestaging.ieee.org/ielx7/50/9425373/09364672.pdf?arnumber=9364672
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofJournal of Lightwave Technology
dc.relation.pages3284-3290
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enQuantum cascade lasers
dc.subject.enAttenuation
dc.subject.enLaser beams
dc.subject.enOptical fiber networks
dc.subject.enMeasurement by laser beam
dc.subject.enCouplings
dc.subject.enOptical fiber devices
dc.titleButt-Coupling of 4.5 μm Quantum Cascade Lasers to Silica Hollow Core Anti-Resonant Fibers
dc.typeJournalArticle
dspace.entity.typePublication