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      https://www.ias.ac.in/article/fulltext/pram/037/02/0163-0166

    • Keywords

       

      Lasers; air breakdown; pressure scaling; plasma

    • Abstract

       

      Studies of breakdown threshold intensity for air at various pressures in the range of 24–760 torr using 0.355, 0.532 and 1.06 µm radiation are reported. We observep−0.8 scaling ofIth at 1.06 µm and a weak scaling ofp−0.4 at 0.532 and 0.355 µm radiation. Strong dependence of breakdown spot size on laser power but weak dependence on air pressure is observed.

    • Author Affiliations

       

      Rekha Tambay1 D Victor Suvisesha Muthu1 V Kumar1 R K Thareja1

      1. Department of Physics and Center for Laser Technology, Indian Institute of Technology, Kanpur - 208 016, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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