用于大气分析的白光纤.
J Kasparian1, M Rodriguez, G Méjean
1Teramobile project, Laboratoire de Spectrométrie Ionique et Moléculaire, UMR CNRS 5579, Université Claude Bernard Lyon 1, 43 boulevard du 11 novembre 1918, F-69622 Villeurbanne Cedex, France. jkaspari@lasim.univ-lyon1.fr
Science (New York, N.Y.)
|July 5, 2003
概括
高功率的五秒激光脉冲创建自导丝,产生宽带白光,可从高空探测到. 这一突破使得先进的大气遥感和潜在的闪电控制应用成为可能.
科学领域:
- 大气物理学 大气物理学
- 激光物理 激光物理
- 遥感 遥感 遥感 遥感
背景情况:
- 传统的遥感采用环境光或窄频激光器.
- 五秒激光脉冲表现出独特的大气传播特性.
研究的目的:
- 探索秒激光产生的白光在大气应用中的潜力.
- 为了研究自导激光丝的遥感能力.
主要方法:
- 使用一个移动的femtosecond-terawatt激光系统 (Teramobile).
- 分析大气中高功率五秒激光脉冲的传播.
- 检测激光丝发出的宽带白光连续体.
主要成果:
- 五秒激光脉冲在大气中形成自导丝.
- 这些光纤发出从紫外线到红外线的白光连续体.
- 白光显示方向性行为,增强后向散射.
- 这种光线的探测可以从超过20公里的高度实现.
结论:
- 产生的白光是白光和非线性光检测和距离的可行来源.
- 应用包括大气微量气体遥感和气溶识别.
- 激光诱导的线体内的空气离子化为控制的凝结和闪电修饰提供了潜在的可能性.
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