PDF(Pubmed)
Abstract：
The molecular laser-induced plasma (LIP) produced during the ablation of silver sulfide (Ag2S) was used as a medium for high-order harmonic generation in the extreme ultraviolet range. The role of LIP formation, the plasma components, and the geometry of plasma in the harmonic conversion efficiency was analyzed. We also analyzed the influence of the driving pulses (chirp, single-color pump, two-color pump, and delay between heating and converting pulses) on the harmonic yield in Ag2S LIP. The application of molecular plasma was compared with the application of atomic plasma, which comprised similar metallic elements (Ag) as well as other metal LIPs. The harmonics from the Ag2S LIP were 4 to 10 times stronger than those from the Ag LIP. The harmonics up to the 59th order were achieved under the optimal conditions for the molecular plasma.
摘要：
在硫化银（Ag2S）烧蚀过程中产生的分子激光诱导等离子体（LIP）被用作在极紫外范围内产生高阶谐波的介质。LIP形成的作用，等离子体成分，并对谐波转换效率中等离子体的几何形状进行了分析。我们还分析了驱动脉冲的影响(啁啾，单色泵，双色泵，以及加热和转换脉冲之间的延迟）对Ag2SLIP中的谐波产量的影响。比较了分子等离子体的应用与原子等离子体的应用,它包含类似的金属元素（Ag）以及其他金属LIP。来自Ag2SLIP的谐波比来自AgLIP的谐波强4至10倍。在分子等离子体的最佳条件下实现了高达59阶的谐波。
