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Journal of Applied Physics / Volume 98 / Issue 4 / LASERS, OPTICS, AND OPTOELECTRONICS

J. Appl. Phys. 98, 043101 (2005); http://dx.doi.org/10.1063/1.2009076 (4 pages)

Improvement of the atmospheric discharge laser-triggered ability using multiple pulses from a kilohertz KrF laser

Michiteru Yamaura

Department of Electrical and Electronic Engineering, Faculty of Science and Engin., Saga University, 1 Honjo-machi, Saga 840-8502, Japan

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(Received 8 December 2004; accepted 5 July 2005; published online 17 August 2005)

The potential ability of lasers to control lightning can be improved by using a train of pulses with submillisecond separations. Laser-triggered experiments in a small-scale (10‐mm gap) atmospheric discharge facility show that the triggering is dramatically enhanced when a five-pulse train of sub-Joule energy is used instead of a single pulse. This effect increases rapidly as the pulse interval is reduced. It appears that at a submillisecond pulse interval, sufficient positive and negative ions survive in subsequent pulses, thus enabling easy deionization. Hence, significant plasma buildup occurs from one pulse to the next. However, this persistence of ions would appear to imply that the rate of recombination (effectively a charge transfer between ions) is considerably lower than previously believed.

© 2005 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL PROCEDURE
  3. RESULTS
    1. Characteristics of triggered discharge
    2. Evaluation of charged particles density
      1. The experimental results
      2. The calculation results
  4. DISCUSSION
  5. CONCLUSIONS

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KEYWORDS and PACS

Keywords

krypton compounds, excimer lasers, gas lasers, optical pulse generation, plasma production by laser, charge exchange, plasma density

PACS

  • 42.55.Lt

    Gas lasers including excimer and metal-vapor lasers

  • 42.65.Re

    Ultrafast processes; optical pulse generation and pulse compression

  • 52.50.Jm

    Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.)

  • 52.25.-b

    Plasma properties

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2009076

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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