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Opt Lett. 2011 May 1;36(9):1587-9. doi: 10.1364/OL.36.001587.

Fifty percent internal slope efficiency femtosecond direct-written Tm³⁺:ZBLAN waveguide laser.

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  • 1Institute for Photonics and Advanced Sensing, School of Chemistry & Physics, University of Adelaide, Adelaide, South Australia, 5005, Australia. david.lancaster@adelaide.edu.au

Abstract

We report a 790 nm pumped, Tm³⁺ doped ZBLAN glass buried waveguide laser that produces 47 mW at 1880 nm, with a 50% internal slope efficiency and an M² of 1.7. The waveguide cladding is defined by two overlapping rings created by femtosecond direct-writing of the glass, which results in the formation of a tubular depressed-index-cladding structure, and the laser resonator is defined by external dielectric mirrors. This is, to the best of our knowledge, the most efficient laser created in a glass host via femtosecond waveguide writing.

PMID:
21540936
[PubMed]
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