基于气体和固体高次谐波产生的阿秒科学。

Li Jie, Lu Jian, Chew Andrew, Han Seunghwoi, Li Jialin, Wu Yi, Wang He, Ghimire Shambhu, Chang Zenghu

Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing, 100094, China.

Institute for the Frontier of Attosecond Science and Technology, CREOL and Department of Physics, University of Central Florida, Orlando, FL, 32816, USA.

Nat Commun. 2020 Jun 2;11(1):2748. doi: 10.1038/s41467-020-16480-6.

Recent progress in high power ultrafast short-wave and mid-wave infrared lasers has enabled gas-phase high harmonic generation (HHG) in the water window and beyond, as well as the demonstration of HHG in condensed matter. In this Perspective, we discuss the recent advancements and future trends in generating and characterizing soft X-ray pulses from gas-phase HHG and extreme ultraviolet (XUV) pulses from solid-state HHG. Then, we discuss their current and potential usage in time-resolved study of electron and nuclear dynamics in atomic, molecular and condensed matters.

高功率超快短波和中波红外激光器的最新进展，已实现了在水窗及更短波长范围内的气相高次谐波产生（HHG），以及凝聚态物质中的HHG演示。在这篇展望文章中，我们讨论了从气相HHG产生软X射线脉冲以及从固态HHG产生极紫外（XUV）脉冲方面的最新进展和未来趋势。然后，我们讨论了它们在原子、分子和凝聚态物质中电子与核动力学的时间分辨研究中的当前及潜在用途。