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激光啁啾对激光等离子体细丝传输的影响 被引量:4

Effects of temporal chirp on laser filamentation in air
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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. 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.
出处 《物理学报》 SCIE EI CAS CSCD 北大核心 2007年第3期1434-1438,共5页 Acta Physica Sinica
基金 国家自然科学基金(批准号:60478047 10374116 10390161) 国家高技术激光核聚变主题资助的课题.~~
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参考文献22

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共引文献26

同被引文献69

  • 1郝作强,张杰,俞进.等离子体通道的声学诊断方法[J].物理,2004,33(6):443-445. 被引量:2
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