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

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 formatio...

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Bibliographic Details
Published in:Optics letters 2011-05, Vol.36 (9), p.1587-1589
Main Authors: LANCASTER, D. G, GROSS, S, EBENDORFF-HEIDEPRIEM, H, KUAN, K, MONRO, T. M, AMS, M, FUERBACH, A, WITHFORD, M. J
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Optics
Physics
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Summary: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.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.36.001587