分子 AgS 等离子体中的谐波产生。

Harmonic Generation in Molecular AgS Plasma.

机构信息

Institute of Fundamental and Applied Research, TIIAME National Research University, Kori Niyoziy 39, Tashkent 100000, Uzbekistan.

Department of Optics and Spectroscopy, Voronezh State University, 394018 Voronezh, Russia.

出版信息

Int J Mol Sci. 2024 Jul 25;25(15):8106. doi: 10.3390/ijms25158106.

DOI:10.3390/ijms25158106

PMID:39125674

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11311532/

Abstract

The molecular laser-induced plasma (LIP) produced during the ablation of silver sulfide (AgS) 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 AgS 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 AgS 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

分子激光诱导等离子体（LIP）在硫化银（AgS）烧蚀过程中产生，被用作极紫外区高次谐波产生的介质。分析了 LIP 形成、等离子体成分和等离子体几何形状对谐波转换效率的作用。还分析了驱动脉冲（啁啾、单波长泵浦、双波长泵浦和加热与转换脉冲之间的延迟）对 AgS LIP 中谐波产率的影响。将分子等离子体的应用与原子等离子体的应用进行了比较，原子等离子体包含类似的金属元素（Ag）以及其他金属 LIP。在分子等离子体的最佳条件下，AgS LIP 的谐波比 Ag LIP 的谐波强 4 到 10 倍。在最佳条件下，实现了高达第 59 阶的谐波。