Experimental and theoretical analysis of Dy3+-doped fiber lasers for efficient yellow emission

M. Z. Amin*, S. D. Jackson, M. R. Majewski

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We report a detailed experimental and theoretical analysis of the 4F9=2 to 6H13=2 lasing transition of a dysprosium (Dy3+)-doped ZBLAN fiber, a strong candidate for future compact and highly efficient yellow laser emission. Experimentally, we used a gallium nitride laser diode emitting at 447 nm as a pump source and measured yellow laser output generated with a maximum slope efficiency of 33%, which is less than half of the Stokes limit (of 78%). This result is commensurate with two other reports of yellow emission from Dy3C. As a result, we developed a numerical model to understand and analyze the improvement potential of this fiber laser system. For reliable spectroscopic data input to the numerical model, we measured the absorption and emission cross sections from Dy3C-doped ZBLAN glass.We investigated the potential causes of the low experimental slope efficiency and found contributions from the background loss of the fiber and excited-state absorption (ESA) of the intracavity yellow light.We estimated the signal re-absorption cross section using the emission cross section and the McCumber relation, which was subsequently used in our numerical model to compare successfully with our experimental results. We show that the ESA can be reduced for future Dy3C-doped yellow laser systems by cascade lasing or co-doping with a suitable rare earth ion desensitizer.

Original languageEnglish
Pages (from-to)4613-4621
Number of pages9
JournalApplied Optics
Volume60
Issue number16
DOIs
Publication statusPublished - 1 Jun 2021

Fingerprint

Dive into the research topics of 'Experimental and theoretical analysis of Dy<sup>3+</sup>-doped fiber lasers for efficient yellow emission'. Together they form a unique fingerprint.

Cite this