Dysprosium mid-infrared lasers: current status and future prospects

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

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

37 Citations (Scopus)


With growing interest in the mid-infrared spectral region, dysprosium has recently been revisited for efficient high-performance infrared source development. Despite historically receiving less attention than other rare earth ions, in recent years lasers utilizing the dysprosium ion as the laser material have set record mid-infrared performance, including tunability from 2.8 to 3:4 µm (in addition to 4:3 µm lasing), continuous wave powers exceeding 10 W, greater than 73% slope efficiencies, and even ultrafast pulsed operation. Herein, the unique energy level structure and spectroscopy of the dysprosium ion are examined and the major developments that have led to this resurgence of interest and subsequent record mid-infrared laser performance are surveyed. Also mid-infrared applications of emerging dysprosium lasers are highlighted, in addition to surveying the many opportunities that lie ahead.

Original languageEnglish
Article number1900195
Pages (from-to)1-20
Number of pages20
JournalLaser and Photonics Reviews
Issue number3
Publication statusPublished - Mar 2020


  • dysprosium
  • fiber laser
  • mid-infrared


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