Crystalline GaSb-core optical fibers with room-temperature photoluminescence | Zendy

Seunghan Song | Zendy; N. Healy | Zendy; Silje Katrine Svendsen | Zendy; Ulf L. Österberg | Zendy; Alejandra V. Cuervo Covian | Zendy; J. Liu | Zendy; Anna C. Peacock | Zendy; John Ballato | Zendy; F. Laurell | Zendy; Michael Fokine | Zendy; Ursula J. Gibson | Zendy

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Crystalline GaSb-core optical fibers with room-temperature photoluminescence

Author(s) -

Seunghan Song,

N. Healy,

Silje Katrine Svendsen,

Ulf L. Österberg,

Alejandra V. Cuervo Covian,

J. Liu,

Anna C. Peacock,

John Ballato,

F. Laurell,

Michael Fokine,

Ursula J. Gibson

Publication year - 2018

Publication title -

optical materials express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.925

H-Index - 66

ISSN - 2159-3930

DOI - 10.1364/ome.8.001435

Subject(s) - materials science , photoluminescence , crystallite , core (optical fiber) , optical fiber , laser , optoelectronics , composite material , annealing (glass) , fiber , oxide , optics , metallurgy , physics

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 µm 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.

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