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1 results

  • Demonstration of a diode-pumped dual-wavelength metastable krypton laser

  • Qingshan Liu, Rui Wang, Zining Yang, Jianyong Sun, Weiqiang Yang, Hongyan Wang, Xiaojun Xu
  • Journal:
    High Power Laser Science and Engineering / Volume 11 / 2023
    Published online by Cambridge University Press:
    27 September 2023, e87
    • Article
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  • Diode-pumped rare gas lasers are potential candidates for high-energy and high-beam quality laser systems. Currently, most investigations are focused on metastable Ar lasers. The Kr system has the unique advantages of higher quantum efficiency and lower discharge requirements for comparison. In this paper, a diode-pumped metastable Kr laser was demonstrated for the first time. Using a repetitively pulsed discharge at a Kr/He pressure of up to approximately 1500 Torr, metastable Kr atoms of more than 1013 cm–3 were generated. Under diode pumping, the laser realized a dual-wavelength output with an average output power of approximately 100 mW and an optical conversion efficiency of approximately 10% with respect to the absorbed pump power. A kinetics study involving population distribution and evolution was conducted to analyze the laser performance.