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Ion-exchanged waveguide lasers in Er3+/Yb3+ codoped silicate glass.

P M Peters1, D S Funk, A P Peskin

  • 1Optoelectronics Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80303, USA. ppeters@boulder.nist.gov

Applied Optics
|March 8, 2008
PubMed
Summary

This study explores erbium/ytterbium-codoped silicate glass for 1.5 micrometer waveguide lasers. An optimal ytterbium:erbium ratio of 5:1 yielded high performance, demonstrating potential for durable, efficient waveguide laser devices.

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Area of Science:

  • Materials Science
  • Optics and Photonics
  • Laser Physics

Background:

  • Waveguide lasers are crucial for telecommunications and sensing.
  • Developing efficient and durable host materials is essential for advanced laser applications.
  • Erbium-doped glasses are widely used for 1.5 micrometer laser emission.

Purpose of the Study:

  • To investigate erbium/ytterbium-codoped silicate glass as a host for waveguide lasers.
  • To optimize the ytterbium to erbium ion doping ratio for enhanced laser performance.
  • To characterize the spectroscopic properties and laser output of fabricated waveguide devices.

Main Methods:

  • Spectroscopic analysis of Er(3+)/Yb(3+) codoped silicate glass.
  • Fabrication of waveguide lasers using potassium ion exchange.

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  • Characterization of waveguide mode properties at 1.5 micrometers.
  • Systematic investigation of laser performance versus Yb:Er doping ratio.

    • Main Results:

    • Single transverse mode operation at 1.5 micrometers was achieved in fabricated waveguides.
    • An optimal Yb:Er ratio of approximately 5:1 was identified for maximum laser efficiency.
    • Slope efficiencies up to 6.5% and output powers of 19.6 mW at 1.54 micrometers were demonstrated.
    • Upconversion and cross-relaxation coefficients were extracted using a waveguide laser model.

    Conclusions:

    • Er(3+)/Yb(3+) codoped silicate glass is a promising host material for high-performance waveguide lasers.
    • The K(+)-ion exchange method is effective for fabricating efficient waveguide lasers in this glass.
    • The study provides valuable insights into optimizing doping concentrations for rare-earth-doped waveguide lasers.