面向超快二维电子光谱的脉冲压缩技术
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北京理工大学光电学院

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O433.5+4

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国家自然科学基金资助项目(U22A6006,62105030)


Pulse compression technology for ultrafast two-dimensional electronic spectroscopy
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    摘要:

    脉冲压缩是超快二维电子光谱 (two-dimensional electronic spectroscopy, 2DES) 的关键技术之一,其直接决定了系统的时间分辨率,对研究激发态弛豫、溶剂化与量子相干传能等超快动力学机理有着重要意义。本文系统评述了2DES中常用的脉冲压缩方法:首先介绍了飞秒激光脉冲的时频域特性,然后详细讨论了光栅对、棱镜对、光栅-棱镜组合、脉冲整形器及啁啾镜对等脉冲压缩技术的原理与局限性,最后,通过结合典型案例,分析了不同2DES系统中的压缩方法选择策略。本文拟通过系统梳理2DES中的脉冲压缩技术,为发展自主可控的高端超快光谱仪器以及推动超快科学等交叉学科领域的发展提供助力。

    Abstract:

    Pulse compression is one of the key technologies in ultrafast two-dimensional electronic spectroscopy (2DES), which determines the time resolution of the spectrometer and is of great significance for studying ultrafast dynamic such as excited-state relaxation, solvation, and coherent energy transfer. This article provides a systematic review of commonly-used pulse compression methods in 2DES. First, it introduces the time-frequency characteristics of femtosecond laser pulses. Then, it discusses in detail the principles and limitations of various pulse compression techniques, including grating pairs, prism pairs, grating-prism combinations, pulse shapers, and chirped mirror pairs. Finally, by examining representative cases, it analyzes the selection strategies for compression methods in different 2DES systems. Through a systematic review of different pulse compression methods, this article aims to facilitate the development of advanced domestically mastered ultrafast spectroscopic instruments and contribute to the advancement of ultrafast science and related interdisciplinary fields.

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历史
  • 收稿日期:2025-04-17
  • 最后修改日期:2025-07-03
  • 录用日期:2025-06-03
  • 在线发布日期: 2025-07-04
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