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介质的非均匀性对高次谐波影响的研究
Influence of medium’s nonuniformity on high-order harmonics
【摘要】 讨论了气体介质的非均匀性对飞秒激光高次谐波产生过程的可能影响 .计算结果表明 ,采用喷阀技术所提供的气体介质的密度梯度和气体原子运动速度的影响很小 ,不会产生实验上可观测的效果 .这一结果支持了喷气靶在高次谐波产生中的广泛应用
【Abstract】 The possible influence of nonuniform gaseous medium on high order harmonics generated by femtosecond laser is discussed. The results of the computation indicate that the gradient of the gaseous medium and the velocity of gas atoms from the jet cannot cause detectable effects in experiments.This result supports the widespread use of gas jet in experiments concerning high order harmonics.
【关键词】 高次谐波;
气体介质;
各向异性;
飞秒激光;
【Key words】 high order harmonics; gaseous medium; nonuniformity; femtosecond laser;
【Key words】 high order harmonics; gaseous medium; nonuniformity; femtosecond laser;
【基金】 国家重点基础研究专项经费 (批准号:G19990 75 2 0 7);国家自然科学基金(批准号 :198840 0 1,10 10 40 0 3 ,90 10 10 2 7)资助的课题~~
- 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,2002年09期
- 【分类号】TN241
- 【被引频次】3
- 【下载频次】71