Dysprosium-doped ZBLAN fiber laser tunable from 2.8 μm to 3.4 μm, pumped at 1.7 μm

Matthew R. Majewski*, Robert I. Woodward, Stuart D. Jackson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

117 Citations (Scopus)


We demonstrate a mid-infrared dysprosium-doped fluoride fiber laser with a continuously tunable output range of 573 nm, pumped by a 1.7 μm Raman fiber laser. To the best of our knowledge, this represents the largest tuning range achieved to date from any rare-earth-doped fiber laser and, critically, spans the 2.8–3.4 μm spectral region, which contains absorption resonances of many important functional groups and is uncovered by other rare-earth ions. Output powers up to 170 mW are achieved, with 21% slope efficiency. We also discuss the relative merits of the 1.7 μm pump scheme, including possible pump excited-state absorption.

Original languageEnglish
Pages (from-to)971-974
Number of pages4
JournalOptics Letters
Issue number5
Publication statusPublished - 1 Mar 2018


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