基于高次谐波阿秒光源的超快测量技术(特邀)

Ultrafast Measurement Techniques Using High-order Harmonic Based Attosecond Light Sources(Invited)

台式阿秒相干光源在过去20多年取得了飞速的发展,其研究重心已经从早期的产生与测量机理的探索逐渐过渡到了极端时间尺度超快过程的追踪及操控上。目前阿秒时间分辨的谱学技术不仅能实现简单的原子分子体系瞬态过程的直接追踪,还被逐步应用到化学分子、生物分子、固体材料等复杂体系的测量中。本文回顾了基于阿秒光源的超快测量技术的发展,介绍了相关技术的原理及其在物理、化学、信息科学领域的应用研究。

Table-top attosecond coherent light sources have achieved rapid development in the past two decades.Its research focus has gradually migrated from the generation and characterization of attosecond pulses in early times to tracing and controlling exceedingly fast processes with unprecedented time resolution.Nowadays,attosecond time resolved spectroscopies have been developed to successfully capture transients in simple atomic and molecular systems.Extending their applications to dynamics measurement in complex systems such as chemical molecules,biomolecules and condensed matter is ongoing.This paper reviews the development of ultrafast measuremt techniques using high-order harmonic based attosecond pulses,and introduces their applications in physics,chemistry and information sciences.