Role of the plasma scale length in the harmonic generation from solid targets
Role of the plasma scale length in the harmonic generation from solid targets
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DOI：
10.1103/physreve.58.r5253
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发表时间：
1998-11-01
影响因子：
2.4
通讯作者：
Witte, K
中科院分区：
文献类型：
--
作者：
Zepf, M;Tsakiris, GD;Witte, K
我们研究了150fsec， 790nm和395nm激光脉冲与固体目标相互作用产生的高次谐波。实验表明，转换效率与时间脉冲形状和预成形等离子体的密度尺度长度（L/ λ）有很大的关系。由于高对比度脉冲相互作用，在较短的密度尺度长度（L/ λ小于或等于0.4）下实现了最高的转换效率。[s1063 - 651 x(98) 50211 - 5]。
We have investigated the generation of high harmonics from the interaction of 150 fsec, 790 nm, and 395 nm laser pulses with solid targets. Experiments are presented that demonstrate a strong dependence of the conversion efficiency on the temporal pulse shape and the resulting density scale length (L/lambda) of the preformed plasma. The highest conversion efficiencies are achieved for short density scale lengths (L/lambda less than or equal to 0.4), which result from high contrast ratio pulse interactions. [S1063-651X(98)50211-5].