飞秒瞬态吸收光谱技术及应用

doi:10.3969/j.issn.1007-5461.2021.05.001

摘要/Abstract

摘要： 超快激光技术的出现极大地促进了人们对众多研究领域中超短时间尺度 (例如飞秒) 的微观过程的深入理解。详细介绍了基于飞秒时间分辨的瞬态吸收光谱技术与原理, 并结合本课题组的工作, 展示了该方法在凝聚相分子体系中量子态演化过程及其相互作用研究中的应用, 特别是对激发态电子能量弛豫、波包演化过程、能量转移过程、质子/电荷转移以及分子激发态结构动力学等微观机制的研究，表明该方法可以广泛应用到物理、化学、材料、生物、环境等交叉研究领域。最后, 对该技术的发展前景以及未来研究方向进行了展望。

关键词: 光谱学, 超快弛豫, 飞秒时间分辨, 瞬态吸收, 激发态动力学

Abstract: The emergence of ultrafast laser spectroscopy technology has greatly promoted the deep understanding of the microscopic processes of ultrashort time scale (such as femtosecond) in many research fields. The principle and techniques of femtosecond time-resolved transient absorption spectra are introduced in detail. Combined with our research results, the application of this method in the study of the microscopic mechanism of ultrafast relaxations and interactions in the excited states of condensed molecular systems is demonstrated, especially for relaxation of excited states, evolution pathway and coherence of wavepacket, energy transfer, proton/charge transfer, molecular structural dynamics and so on. It is indicated that this method will play an important role in other related fields such as physics, chemistry, materials, biology, environment and other interdisciplinary fields. Finally, the potential developments and further research trends of the ultrafast spectroscopy are prospected.

Key words: spectroscopy, ultrafast relaxation, femtosecond time-resolution, transient absorption, excited state dynamics

中图分类号:

O433.5

王野, 张嵩, ∗, 张冰. 飞秒瞬态吸收光谱技术及应用[J]. 量子电子学报, 2021, 38(5): 547-563.

WANG Ye, ZHANG Song, ∗, ZHANG Bing. Femtosecond transient absorption spectroscopy and its applications[J]. Chinese Journal of Quantum Electronics, 2021, 38(5): 547-563.

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