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Crystalline GaSb-core optical fibers with room-temperature photoluminescence
Norwegian Univ Sci & Technol, Dept Phys & Porelabs, N-7491 Trondheim, Norway..
Newcastle Univ, Emerging Technol & Mat Grp, Newcastle NE1 7RU, England..
Norwegian Univ Sci & Technol, Dept Phys & Porelabs, N-7491 Trondheim, Norway..
Norwegian Univ Sci & Technol NTNU, Dept Elect Syst, N-7491 Trondheim, Norway..
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2018 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 8, no 6, p. 1435-1440Article in journal (Refereed) Published
Abstract [en]

Glass-clad, GaSb-core fibers were drawn and subsequently laser annealed. The as-drawn fibers were found to be polycrystalline, possess Sb inclusions, and have oxide contamination concentrations of less than 3 at%. Melting and resolidifying regions in the cores using 10.6 mu m CO2 laser radiation yielded single crystalline zones with enhanced photoluminescence (PL), including the first observation of strong room temperature PL from a crystalline core fiber. Annealed fibers show low values of tensile strain and a bandgap close to that of bulk GaSb. 

Place, publisher, year, edition, pages
OPTICAL SOC AMER , 2018. Vol. 8, no 6, p. 1435-1440
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Physical Sciences
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URN: urn:nbn:se:kth:diva-230829DOI: 10.1364/OME.8.001435ISI: 000433955300004Scopus ID: 2-s2.0-85047063477OAI: oai:DiVA.org:kth-230829DiVA, id: diva2:1220684
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QC 20180619

Available from: 2018-06-19 Created: 2018-06-19 Last updated: 2018-06-19Bibliographically approved

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Fokine, MichaelGibson, Ursula J.

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