High-power single-frequency thulium-doped fiber DBR laser at 1943 nm

Zhaowei Zhang, A. J. Boyland, J. K. Sahu, W. A. Clarkson, M. Ibsen

Research output: Contribution to journalArticlepeer-review

76 Citations (Scopus)


We report on a high-power single-frequency mode-hop-free fiber distributed Bragg reflector (DBR) laser fabricated from Tm-doped photosensitive aluminosilicate fiber and in-band pumped by an Er/Yb fiber laser at 1565 nm. The fiber DBR laser yielded up to 580 mW of single-frequency single-ended output at 1943 nm for ~ 5 W of absorbed pump power. Further scaling of the DBR laser output power was achieved with the aid of a simple Tm-doped fiber amplifier stage spliced directly to the DBR fiber without the need of an optical isolator. The maximum output power from the DBR laser and fiber amplifier was 2.9 W for a combined absorbed pump power of 9 W. The merits of this DBR laser architecture compared to conventional DBR and distributed-feedback laser configurations are discussed. © 2006 IEEE.

Original languageEnglish
Article number5688287
Pages (from-to)417-419
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number7
Publication statusPublished - 2011


  • Distributed Bragg reflector (DBR) lasers
  • fiber lasers
  • infrared lasers
  • single-frequency lasers


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