1 0 0 0 OA レーザー誘雷の基礎研究
- 著者
- 内山 太郎 広橋 道夫 宮田 英憲 坂井 辰彦
- 出版者
- The Laser Society of Japan
- 雑誌
- レーザー研究 (ISSN:03870200)
- 巻号頁・発行日
- vol.16, no.5, pp.267-277, 1988-05-28 (Released:2010-02-26)
- 参考文献数
- 6
- 被引用文献数
- 4 4
A possibility of triggering lightning using laser is investigated. A long plasma channel is produced in atmospheric air when pulsed CO2 laser radiation is focused by a mirror. Length of plasma channels are measured for focal length of 10m, 20m, 30m, 45m and 60m respectively. A length of 30m plasma channel is produced when a energy. of 50 J unstable mode is focused by the mirror having 60m focal length. The propagated unstable mode patterns and intensities are calculated using the Fresnel diffraction integral, and compared with experimental results.The plasma channel produced by the mirror of 10m focal length is applied for triggering electrical discharge. The arc which has the length of 1.8m is triggered and guided by the plasma channel, and some characteristics are obtained.
- 著者
- Tsunetoshi ARIKADO Makoto SEKINE Haruo OKANO Yasuhiro HORIIKE
- 出版者
- The Laser Society of Japan
- 雑誌
- The Review of Laser Engineering (ISSN:03870200)
- 巻号頁・発行日
- vol.12, no.7, pp.348-356, 1984-07-30 (Released:2010-02-26)
- 参考文献数
- 49
- 著者
- 安尾 浩行 石原 朋浩 森口 雅弘 山口 正義
- 出版者
- The Laser Society of Japan
- 雑誌
- レーザー研究 (ISSN:03870200)
- 巻号頁・発行日
- vol.25, no.3, pp.238-242, 1997
- 被引用文献数
- 7
We have developed a compact, lightweight laser range finder system using Q-switched erbium doped fiber laser with peak power of 600W at a repetition frequency of 1kHz. The system can measure the distance between overhead transmission lines and a tree top 300m away with an accuracy of ± 0.2m. This is a commercial version of a system which has been jointly developed by The Kansai Electric Power Inc. and Sumitomo Electric Industries, LTD.
- 著者
- 土志田 実
- 出版者
- The Laser Society of Japan
- 雑誌
- レーザー研究 (ISSN:03870200)
- 巻号頁・発行日
- vol.25, no.1, pp.35-40, 1997
Research and development on 2μm eyesafe fiber lasers have been reviewed. The excellent laser performance of the high slope efficiency, low launched threshold power, and widely tunable range has been demonstrated in the rare-earth doped 2μm fiber lasers at room temperature.