Superbroadband near-infrared emission in Tm-Bi codoped sodium-germanium-gallate glasses | Zendy

Bo Zhou | Zendy; Hai Lin | Zendy; Baojie Chen | Zendy; Edwin YueBun Pun | Zendy

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Superbroadband near-infrared emission in Tm-Bi codoped sodium-germanium-gallate glasses

Author(s) -

Bo Zhou,

Hai Lin,

Baojie Chen,

Edwin YueBun Pun

Publication year - 2011

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.006514

Subject(s) - materials science , thulium , bismuth , germanium , gallate , luminescence , infrared , ion , optics , phosphor , photon upconversion , optoelectronics , analytical chemistry (journal) , doping , chemistry , nuclear chemistry , silicon , physics , organic chemistry , metallurgy , chromatography

Superbroadband emission from 1.0 to 1.7 μm wavelength was observed in thulium-bismuth (Tm-Bi) codoped sodium-germanium-gallate (NGG) glasses under 793 nm excitation. Efficient energy transfer process from Bi to Tm ions, with value as high as 67.7%, was achieved which is beneficial in achieving flat broadband lineshape. The large stimulated emission cross-section and measured lifetime confirm the potentials of Tm-Bi codopants as luminescence sources for superbroadband near-infrared (NIR) optical amplifiers and tunable lasers. Planar optical waveguides were fabricated successfully in the codoped NGG glasses using K(+)-Na(+) ion-exchange process.

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