| 激光啁啾对激光等离子体细丝传输的影响 |
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| 引用本文： | 王兆华,郝作强,张喆,鲁欣,金展,仲佳勇,刘运全,魏志义,张杰,赵刚.激光啁啾对激光等离子体细丝传输的影响[J].物理学报,2007,56(3):1434-1438. |
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| 作者姓名： | 王兆华 郝作强 张喆 鲁欣 金展 仲佳勇 刘运全 魏志义 张杰 赵刚 |
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| 作者单位： | (1)中国科学院国家天文台，北京 100012; (2)中国科学院物理研究所光物理实验室，北京 100080; (3)中国科学院物理研究所光物理实验室，北京 100080;中国科学院国家天文台，北京 100012 |
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| 基金项目： | 国家自然科学基金;国家高技术研究发展计划(863计划) |
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| 摘 要： | 对不同啁啾状态下的飞秒激光在大气中的成丝过程进行了研究.实验研究发现成丝状况及其演化与初始激光脉冲的啁啾状态密切相关，适当的负啁啾有利于激光的成丝传输.当初始激光脉冲的啁啾量不断变大时，激光脉冲在大气中的成丝起点位置会逐渐变远.还研究了初始脉冲啁啾量对使用聚焦透镜产生的细丝的影响，发现其与自由传输情况具有相似的变化规律.
关键词：
飞秒激光等离子体通道
脉冲啁啾
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| 关 键 词： | 飞秒激光等离子体通道 脉冲啁啾 |
| 文章编号： | 1000-3290/2007/56(03)/1434-05 |
| 收稿时间： | 2005-10-17 |
| 修稿时间： | 10 17 2005 12:00AM |
Effects of temporal chirp on laser filamentation in air |
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| Wang Zhao-Hua,Hao Zuo-Qiang,Zhang Zhe,Lu Xin,Jin Zhan,Zhong Jia-Yong,Liu Yun-Quan,Wei Zhi-Yi,Zhang Jie,Zhao Gang.Effects of temporal chirp on laser filamentation in air[J].Acta Physica Sinica,2007,56(3):1434-1438. |
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| Authors: | Wang Zhao-Hua Hao Zuo-Qiang Zhang Zhe Lu Xin Jin Zhan Zhong Jia-Yong Liu Yun-Quan Wei Zhi-Yi Zhang Jie Zhao Gang |
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| Institution: | 1. Laboratory of Optical Physics, Institute of Physics, Chirtese Academy of Sciences, Beijing 100080, China; 2. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China |
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| Abstract: | Effect of the laser chirp on the laser filamentation is investigated. It is found that the chirp plays a crucial role in the formation of filamentation and its evolution. An initial negative chirp is favorable for long-distance propagation of filaments in air. As the chirp increases, the distance between the compressor and the position of the onset of filaments becomes larger. We also investigate the influence of initial chirp on the focusing laser pulses by a lens. It is found that there are the same tendency of filaments formed by lens and those in free propagation. |
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| Keywords: | lasma channel chirp |
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