Efficient 2.96 μm dysprosium-doped fluoride fibre laser pumped with a "Nd:YAG" laser operating at 1.3 μm

Yuen H. Tsang*, Atalla E. El-Taher, Terence A. King, Stuart D. Jackson

*Corresponding author for this work

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

A quasi-continuous wave Dy3+-doped ZBLAN fibre laser pumped by a ∼1.3 μm Nd:YAG laser and operating at 2.96 μm with an emission linewidth of ∼14 nm (FWHM) has been demonstrated. The 6H 15/26H9/2, 6F 11/2 absorption band of Dy3+-doped ZBLAN centred at 1.3 μm has been used to pump the 6H13/26H15/2 laser transition. For a 60 cm fibre length, a threshold of 0.5 W and a slope efficiency of ∼20% with respect to the absorbed pump power was measured. The experimental slope efficiency was ∼45% of the Stokes efficiency limit. The high efficiency relates to low pump ESA losses and an optimised output coupling as compared with previous demonstrations.

Original languageEnglish
Pages (from-to)678-685
Number of pages8
JournalOptics Express
Volume14
Issue number2
DOIs
Publication statusPublished - 23 Jan 2006
Externally publishedYes

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