Optical and Quantum Electronics

, Volume 42, Issue 2, pp 69–79

Modelling of a simple Dy3+ doped chalcogenide glass fibre laser for mid-infrared light generation

  • S. Sujecki
  • L. Sójka
  • E. Bereś-Pawlik
  • Z. Tang
  • D. Furniss
  • A. B. Seddon
  • T. M. Benson
Open Access
Article

DOI: 10.1007/s11082-010-9421-z

Cite this article as:
Sujecki, S., Sójka, L., Bereś-Pawlik, E. et al. Opt Quant Electron (2010) 42: 69. doi:10.1007/s11082-010-9421-z

Abstract

A simple Dy3+-doped chalcogenide glass fibre laser design for mid-infrared light generation is studied using a one dimensional rate equation model. The fibre laser design employs the concept of cascade lasing. The results obtained demonstrate that efficient cascade lasing may be achieved in practice without the need for fibre grating fabrication, as a sufficient level of feedback for laser action is provided by Fresnel light reflection at chalcogenide glass fibre–air interfaces. Further enhancement of the laser efficiency can be achieved by terminating one of the fibre ends with a mirror. A numerical analysis of the effect of the Dy3+ doping concentration and fibre loss on the laser operation shows that with 5 W of pump power, at 1.71 μm wavelength, output powers above 100 mW at ∼ 4.5 μm wavelength can be achieved with Dy3+ ion concentrations as low as 3 × 1019 cm−3, when fibre loss is of the order 1dB/m.

Keywords

Fibre lasers Laser modelling Mid infrared light Chalcogenide glass fibres 
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Copyright information

© The Author(s) 2010

Authors and Affiliations

  • S. Sujecki
    • 1
  • L. Sójka
    • 1
    • 2
  • E. Bereś-Pawlik
    • 2
  • Z. Tang
    • 1
  • D. Furniss
    • 1
  • A. B. Seddon
    • 1
  • T. M. Benson
    • 1
  1. 1.George Green Institute for Electromagnetics ResearchThe University of NottinghamNottinghamUK
  2. 2.Institute of Telecommunications and AcousticsWrocław University of TechnologyWrocławPoland

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