The application of differential transmission spectroscopy in studying ultrafast phenomena
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摘要: 首先概述了飞秒光谱技术在超快速现象研究中的应用,然后详细地介绍了一种重要的飞秒光谱技术---差分透过率光谱用于测量分立的分子系统的激发态动力学和用于测量晶体中激子的衰变动力学原理、实验技术,并介绍了一些研究实例。最后讨论了差分透过率光谱技术在超快速过程研究中所遇到的困难及解决的办法。Abstract: In this paper,the application of femtosecond spectroscopy in studying ultrafast phenomena is summarized first.Then,applications of differential transmission spectroscopy,one of important femtosecond spectroscopy,in studying ultrafast relaxation process are described in details,including the principle and experimental technique of detecting dynamics of excited states for isolated molecular system and the annihilation dynamics of excitons in crystals.Some examples are given.Finally,some problems met in studying ultrafast process by differential transmission spectroscopy and their solutions are discussed.
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