Transversely Excited Atmospheric CO2 Laser with Ultraviolet Preionizer Separated by Optical Window.

  • Komi Takao
    Laboratory of Beam Technology and Department of Electrical Engineering
  • Imada Go
    Laboratory of Beam Technology and Department of Electrical Engineering
  • Grigoriu Constantin
    Laboratory of Beam Technology and Department of Electrical Engineering
  • Masugata Katsumi
    Laboratory of Beam Technology and Department of Electrical Engineering
  • Masuda Wataru
    Department of Mechanical Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940–21, Japan
  • Yatsui Kiyoshi
    Laboratory of Beam Technology and Department of Electrical Engineering

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  • Transversely Excited Atmospheric CO2 La
  • Transversely Excited Atmospheric CO<sub>2</sub> Laser with Ultraviolet Preionizer Separated by Optical Window

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Abstract

The performance of a Transversely Excited Atmospheric (TEA) CO2 laser with an optical window in front of the preionizer is described. The windows were made of LiF and SiO2. With the LiF window, a maximum laser output energy of 11.6 J/ l (6.2%) was obtained, which was almost the same as that obtained without the window (12.1 J/ l, 6.4%), from a discharge volume of 19 cm3. With the SiO2 window, lasing was not possible. The wavelength range of 110-160 nm was found to be effective for preionization.

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