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Supersonic CO2 laser excited by RF discharge in closed cycle

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Abstract

A supersonic gas flow having a Mach number of 2 has been realized in a closed-cycle radio-frequency (RF)-discharge-excited supersonic CO2 laser system. Stable RF discharge at a high CO2 gas concentration has become possible using supersonic gas flow and RF discharge generated between dielectric electrodes. As a result, high RF input power density has been obtained. In addition, a high small-signal gain has been obtained in the supersonic section through decreases in gas pressure and gas temperature due to supersonic gas flow.

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Authors and Affiliations

  1. Matsushita Electric Industrial Co., Ltd., 3-4 Hikaridai, Seika-cho, Soraku-gun, Kyoto, 619-0237, Japan

    K. Saito

  2. Matsushita Welding Systems Co., Ltd., 3-1-1 Inazu-cho, Toyonaka City, Osaka, 561-0854, Japan

    T. Hongu

  3. Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kouhoku-ku, Yokohama City, Kanagawa, 223-8522, Japan

    T. Uchiyama

Authors
  1. K. Saito
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  2. T. Hongu
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  3. T. Uchiyama
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Correspondence to K. Saito.

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Saito, K., Hongu, T. & Uchiyama, T. Supersonic CO2 laser excited by RF discharge in closed cycle. Appl. Phys. B 80, 693–701 (2005). https://doi.org/10.1007/s00340-005-1763-z

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  • DOI: https://doi.org/10.1007/s00340-005-1763-z

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