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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Room-temperature diode-pumped Yb, Na: PbF2 laser.

Jigang Yin1, Yin Hang, Xiaoming He

  • 1Key Laboratory of High Power Laser Materials, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.

Optics Letters
|January 4, 2012
PubMed
Summary

This study investigated Ytterbium (Yb) and Sodium (Na) doped lead fluoride (PbF2) crystals for laser applications. The Yb, Na:PbF2 crystal demonstrated efficient laser performance and tunable wavelength output, showing potential for femtosecond pulse amplification.

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Area of Science:

  • Materials Science
  • Laser Physics
  • Solid-State Spectroscopy

Background:

  • Lead fluoride (PbF2) crystals are promising host materials for rare-earth doping.
  • Ytterbium (Yb3+) ions offer efficient laser transitions in the near-infrared region.
  • Co-doping with alkali ions like Sodium (Na+) can improve crystal properties.

Purpose of the Study:

  • To investigate the growth and spectroscopic properties of Yb, Na:PbF2 crystals.
  • To evaluate the laser performance of Yb, Na:PbF2 for potential applications.
  • To assess the suitability of Yb, Na:PbF2 as a gain medium for tunable lasers and femtosecond pulse amplification.

Main Methods:

  • Crystal growth of Yb, Na:PbF2.
  • Spectroscopic characterization including absorption and emission spectra.

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  • Laser performance testing under optical pumping.

    • Main Results:

    • Successful growth of Yb, Na:PbF2 crystals.
    • Characterization of spectroscopic properties relevant to laser operation.
    • Achieved 2.65 W output power at 1045 nm with 7.5 W incident pump power at 976 nm for a 2 mol.% Yb3+-doped sample.
    • Demonstrated tunable laser output from 1017 nm to 1078 nm.

    Conclusions:

    • Yb, Na:PbF2 crystals exhibit excellent potential as an amplifier medium.
    • The demonstrated performance highlights suitability for tunable laser applications.
    • Further research is warranted for femtosecond pulse amplification using this material.