150 mW unsaturated output power at 3 µm from a single-mode-fiber erbium cascade laser

M. Pollnau, Ch. Ghisler, G. Bunea, M. Bunea, W. Lüthy, H.P. Weber

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    Abstract

    We report on an erbium cascade laser in a fluorozirconate fiber. Lasing on the transition 4I11/2 -> 4I13/2 at 2.71 µm is supported by colasing on the transition 4S3/2 -> 4I9/2 at 1.72 µm. This recycles the excitation that is lost via excited-state absorption and avoids the saturation of the output power. Threshold at 2.71 µm is 33 mW launched pump power at 791 nm. The measured slope efficiency of 22.6% is relatively close to the 29.1% stokes-efficiency limit. An output power of 158 mW is obtained, limited only by the 1.43 W power available from the Ti:sapphire pump laser. Output power is 15 and slope efficiency 2.5 times higher than reported in previous publications.
    Original languageEnglish
    Pages (from-to)3564-3566
    Number of pages3
    JournalApplied physics letters
    Volume66
    Issue number26
    DOIs
    Publication statusPublished - 1995

    Keywords

    • IOMS-APD: Active Photonic Devices

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  • Cite this

    Pollnau, M., Ghisler, C., Bunea, G., Bunea, M., Lüthy, W., & Weber, H. P. (1995). 150 mW unsaturated output power at 3 µm from a single-mode-fiber erbium cascade laser. Applied physics letters, 66(26), 3564-3566. https://doi.org/10.1063/1.113788