飞秒laser产生的铜等离子体的粗糙度增强的K X射线发射
Roughness enhanced K x-ray emission from femtosecond laser produced copper plasmas
摘要：
研究了100 fs、806 nm、强度为10^15-10^16 W cm^-2的激光脉冲产生的铜等离子体的K X射线发射与输入激光偏振和靶表面条件的关系。我们证明，即使是中等的表面粗糙度提高了特性X射线产量高达70%。我们进一步表明，表面粗糙度的目标覆盖的光耦合到等离子体的偏振态的影响。
英文摘要：
K x-ray emission from copper plasmas produced by 100 fs, 806 nm laser pulses at intensities in the range of 10^15-10^16 W cm^-2 is studied with respect to input laser polarization and target surface conditions. We demonstrate that even moderate surface roughness enhances the characteristic x-ray yield by as much as 70 %. We further show that surface roughness of the targets overrides the effect of polarization state in light coupling to the plasma.
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