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Proceedings Paper

Laser-triggered lightning
Author(s): Yoshinori Shimada; Shigeaki Uchida; Hirohiko Yasuda; Shinji Motokoshi; Chiyoe Yamanaka; Zen-ichiro Kawasaki; Tatsuhiko Yamanaka; Yuji Ishikubo; Mikio Adachi
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Paper Abstract

A series of field experiments for laser triggered lightning have been carried out targeting the winter thunderstorms in Fukui, Japan. A combination of a 2 kJ CO2 laser system, a 600 J Nd-glass laser and a 4th harmonics 100 mJ YAG laser was used to produce a plasma channel which are effective to trigger and guide an electrical leader from the lightning tower. A new scheme of autotriggering laser system by preliminary breakdown (PB) has been developed. The PB triggering system demonstrated its capability of irradiating the laser at the right timing for triggering the leader. On February 11th 1997, in the field experiment, the electric leader was initiated by the laser plasma using the PB triggering system for the first time. A number of diagnostics including UHF interferometers, a tower current monitor, a capacitive antennas verified the initiation of leader triggered by the laser plasma both in time and space.

Paper Details

Date Published: 14 July 1998
PDF: 4 pages
Proc. SPIE 3423, Second GR-I International Conference on New Laser Technologies and Applications, (14 July 1998); doi: 10.1117/12.316594
Show Author Affiliations
Yoshinori Shimada, Institute for Laser Technology (Japan)
Shigeaki Uchida, Institute for Laser Technology (Japan)
Hirohiko Yasuda, Institute for Laser Technology (Japan)
Shinji Motokoshi, Institute for Laser Technology (Japan)
Chiyoe Yamanaka, Institute for Laser Technology (Japan)
Zen-ichiro Kawasaki, Osaka Univ. (Japan)
Tatsuhiko Yamanaka, Osaka Univ. (Japan)
Yuji Ishikubo, Kansai Electric Power Co., Inc. (Japan)
Mikio Adachi, Kansai Electric Power Co., Inc. (Japan)

Published in SPIE Proceedings Vol. 3423:
Second GR-I International Conference on New Laser Technologies and Applications
Alexis Carabelas; Paolo Di Lazzaro; Amalia Torre; Giuseppe Baldacchini, Editor(s)

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