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<p>Results from developing a multiwavelength TEA laser with a selective dispersive resonator providing multiwavelength generation in the near- and mid-IR ranges (1.1–3.5 and 9.2–10.8 μm) are reported. The use of a combined gas mixture containing CO<sub>2</sub> molecules and inert gases (Xe, Kr, Ar, and Ne) produced high-quality radiation with narrow spectral lines, which are necessary for applied spectroscopy and remote gas analysis. The developed optical scheme with a diffraction grating and blocking units ensured fast (0.2 s) sequential switching between spectral lines, which allowed for efficient achievement of the so-called "frozen atmosphere" effect during measurements. The proposed approach significantly simplified the design and improved the reliability of multiwavelength gas analyzers, expanding their functionality while reducing the cost and size. The developed laser could become a promising radiation source for remote sensing of the atmosphere and determining the concentrations of gases such as CO<sub>2</sub> and NH<sub>3</sub>.</p>

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Multiwave Tea Laser with a Combined Working Mixture and Fast Switching of Generation Channels

  • 期刊论文

  • 发表日期：

    2026年7月22日

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  • S. S. Shavel,
  • V. A. Gorobets,
  • S. B. Bushuk

摘要

Results from developing a multiwavelength TEA laser with a selective dispersive resonator providing multiwavelength generation in the near- and mid-IR ranges (1.1–3.5 and 9.2–10.8 μm) are reported. The use of a combined gas mixture containing CO2 molecules and inert gases (Xe, Kr, Ar, and Ne) produced high-quality radiation with narrow spectral lines, which are necessary for applied spectroscopy and remote gas analysis. The developed optical scheme with a diffraction grating and blocking units ensured fast (0.2 s) sequential switching between spectral lines, which allowed for efficient achievement of the so-called "frozen atmosphere" effect during measurements. The proposed approach significantly simplified the design and improved the reliability of multiwavelength gas analyzers, expanding their functionality while reducing the cost and size. The developed laser could become a promising radiation source for remote sensing of the atmosphere and determining the concentrations of gases such as CO2 and NH3.