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使用超强的空气光束产生曲线等离子体通道
Pavel Polynkin1, Miroslav Kolesik, Jerome V Moloney
1College of Optical Sciences, University of Arizona, Tucson, AZ 85721, USA. ppolynkin@optics.arizona.edu
Science (New York, N.Y.)
|April 11, 2009
概括
研究人员在空气中使用五秒钟的Airy光束生成了曲线等离子体通道,这与传统的直线光纤有所不同. 这种新的方法为激光诱导等离子体应用开辟了新的可能性.
科学领域:
- 非线性光学是一种非线性光学.
- 血物理学的等离子体物理学
- 激光与物质的相互作用
背景情况:
- 用超强激光脉冲生成等离子体通道或线材对于遥感和太赫兹生成等应用至关重要.
- 传统的激光线通常使用轴对称的光束,从而产生直径等离子体通道.
研究的目的:
- 通过实验观察和描述空气中产生的曲等离子体通道.
- 为了研究femtosecond Airy光束的传播动态及其产生的等离子体结构.
主要方法:
- 使用秒空气束,它具有轴非对称的空间形状.
- 实验生成和观察空气中的等离子体通道.
主要成果:
- 成功地在空气中产生曲线等离子体通道,与直线丝片的偏离.
- 观察到二次通道从主要的曲通道分开.
- 证明从曲线线丝的不同部分发出的宽带辐射沿着不同的角度轨迹传播.
结论:
- 五秒空气波束能够在空气中生成曲线等离子体通道.
- 这种不寻常的传播模式为控制激光诱导的等离子体结构提供了新的途径.
- 这些发现对需要定制等离子体通道几何形状的先进激光应用有意义.
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