Directly diode-pumped mid-infrared dysprosium fiber laser

Matthew R. Majewski*, Md Ziaul Amin, Thibaud Berthelot, Stuart D. Jackson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


We report the demonstration of a Dy3+-doped ZBLAN fiber laser directly diode-pumped at 800 nm utilizing a codoping scheme with Tm3+ serving as the donor ion. In this initial demonstration, a modest output power of 12 mW is generated with a slope efficiency of 0.3% at an emission wavelength of 3.23 μm. Energy transfer dynamics are investigated through excited state lifetime analysis and comparison to resonant pumping of the Dy3+upper state. The likely presence of an energy transfer upconversion process is identified, which has an undesirable effect on 3 μm class lasers but may be of significant benefit for future 4 μm systems.

Original languageEnglish
Pages (from-to)5549-5552
Number of pages4
JournalOptics Letters
Issue number22
Publication statusPublished - 15 Nov 2019


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