Study on laser plasma generation by high-speed photography

Koji Takahashi, Tatsuya Ikuta, Kunihito Nagayama

Research output: Contribution to conferencePaperpeer-review

Abstract

Laser-induced breakdown of atmosphere is explored by newly developed shadowgraphy and steak photography. Our laser shadowgraphy clearly visualizes transient structure of shock wave, which helps us to understand the multiple breakdowns depending on laser intensity and focal length. The pear shape due to inverse bremsstrahlung becomes more distinguished as the laser intensity increases and focal length decreases. This reason becomes clear by using the streak photographs of Ins/mm resolution. Time charts are obtained for each discrete plasma generation in the laser pulse of a few nanoseconds duration. Effect of solid wall near the focal point is also examined and explained.

Original languageEnglish
Publication statusPublished - Dec 1 2001
Event32nd AIAA Plasmadynamics and Lasers Conference 2001 - Anaheim, CA, United States
Duration: Jun 11 2001Jun 14 2001

Other

Other32nd AIAA Plasmadynamics and Lasers Conference 2001
CountryUnited States
CityAnaheim, CA
Period6/11/016/14/01

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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